./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/reorder_2.i -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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:47:09,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:47:09,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:47:09,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:47:09,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:47:10,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:47:10,004 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:47:10,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:47:10,004 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:47:10,005 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:47:10,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:47:10,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:47:10,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:47:10,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:47:10,006 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:47:10,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:47:10,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:47:10,007 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:47:10,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:47:10,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:47:10,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:47:10,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:47:10,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:47:10,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:47:10,009 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:47:10,009 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:47:10,009 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:47:10,009 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:47:10,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:47:10,010 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:47:10,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:47:10,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:47:10,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:47:10,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:47:10,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:47:10,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:47:10,012 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:47:10,013 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:47:10,013 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:47:10,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:47:10,013 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:47:10,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:47:10,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:47:10,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:47:10,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 [2024-11-19 13:47:10,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:47:10,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:47:10,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:47:10,235 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:47:10,236 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:47:10,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/reorder_2.i [2024-11-19 13:47:11,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:47:11,707 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:47:11,707 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_2.i [2024-11-19 13:47:11,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28bc932a1/43ed9f2d108545d39032131a1fd2f9ef/FLAGa6f11a4d3 [2024-11-19 13:47:11,738 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28bc932a1/43ed9f2d108545d39032131a1fd2f9ef [2024-11-19 13:47:11,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:47:11,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:47:11,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:47:11,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:47:11,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:47:11,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:11" (1/1) ... [2024-11-19 13:47:11,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177d910e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:11, skipping insertion in model container [2024-11-19 13:47:11,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:11" (1/1) ... [2024-11-19 13:47:11,787 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:47:12,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:47:12,201 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:47:12,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:47:12,335 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:47:12,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12 WrapperNode [2024-11-19 13:47:12,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:47:12,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:47:12,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:47:12,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:47:12,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,383 INFO L138 Inliner]: procedures = 372, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 145 [2024-11-19 13:47:12,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:47:12,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:47:12,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:47:12,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:47:12,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,396 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,407 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-19 13:47:12,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,415 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,423 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:47:12,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:47:12,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:47:12,424 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:47:12,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (1/1) ... [2024-11-19 13:47:12,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:47:12,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:12,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 13:47:12,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 13:47:12,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 13:47:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 13:47:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 13:47:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 13:47:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:47:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:47:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:47:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2024-11-19 13:47:12,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2024-11-19 13:47:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:47:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:47:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:47:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:47:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2024-11-19 13:47:12,504 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2024-11-19 13:47:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:47:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:47:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:47:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:47:12,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:47:12,506 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:47:12,647 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:47:12,649 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:47:12,815 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:47:12,815 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:47:12,940 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:47:12,940 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 13:47:12,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:12 BoogieIcfgContainer [2024-11-19 13:47:12,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:47:12,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:47:12,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:47:12,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:47:12,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:47:11" (1/3) ... [2024-11-19 13:47:12,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e7dd5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:12, skipping insertion in model container [2024-11-19 13:47:12,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:12" (2/3) ... [2024-11-19 13:47:12,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e7dd5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:12, skipping insertion in model container [2024-11-19 13:47:12,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:12" (3/3) ... [2024-11-19 13:47:12,950 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2024-11-19 13:47:12,964 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:47:12,965 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 13:47:12,965 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:47:13,002 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 13:47:13,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 45 transitions, 110 flow [2024-11-19 13:47:13,063 INFO L124 PetriNetUnfolderBase]: 8/100 cut-off events. [2024-11-19 13:47:13,066 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-19 13:47:13,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 100 events. 8/100 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 364 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 50. Up to 7 conditions per place. [2024-11-19 13:47:13,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 45 transitions, 110 flow [2024-11-19 13:47:13,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 108 flow [2024-11-19 13:47:13,078 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:47:13,083 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;@5f98d5e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:47:13,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-19 13:47:13,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:47:13,087 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 13:47:13,087 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:47:13,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:13,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:47:13,088 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:13,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:13,092 INFO L85 PathProgramCache]: Analyzing trace with hash 396467415, now seen corresponding path program 1 times [2024-11-19 13:47:13,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:13,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694931920] [2024-11-19 13:47:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:13,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:13,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:13,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694931920] [2024-11-19 13:47:13,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694931920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:13,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:13,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43492695] [2024-11-19 13:47:13,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:13,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:13,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:13,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:13,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:13,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-11-19 13:47:13,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:13,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:13,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-11-19 13:47:13,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:13,541 INFO L124 PetriNetUnfolderBase]: 73/269 cut-off events. [2024-11-19 13:47:13,541 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 13:47:13,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 269 events. 73/269 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1511 event pairs, 41 based on Foata normal form. 2/224 useless extension candidates. Maximal degree in co-relation 279. Up to 126 conditions per place. [2024-11-19 13:47:13,546 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 31 selfloop transitions, 9 changer transitions 2/60 dead transitions. [2024-11-19 13:47:13,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 236 flow [2024-11-19 13:47:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:13,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 13:47:13,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-19 13:47:13,558 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 108 flow. Second operand 4 states and 116 transitions. [2024-11-19 13:47:13,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 236 flow [2024-11-19 13:47:13,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 236 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:47:13,565 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 142 flow [2024-11-19 13:47:13,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-11-19 13:47:13,570 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-19 13:47:13,570 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 142 flow [2024-11-19 13:47:13,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:13,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:13,571 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:47:13,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:47:13,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:13,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash -595005080, now seen corresponding path program 1 times [2024-11-19 13:47:13,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:13,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464480970] [2024-11-19 13:47:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:13,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:13,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:13,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464480970] [2024-11-19 13:47:13,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464480970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:13,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:13,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:13,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712939524] [2024-11-19 13:47:13,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:13,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:13,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:13,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:13,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:13,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-11-19 13:47:13,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:13,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:13,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-11-19 13:47:13,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:13,839 INFO L124 PetriNetUnfolderBase]: 71/252 cut-off events. [2024-11-19 13:47:13,840 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-19 13:47:13,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 252 events. 71/252 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1371 event pairs, 21 based on Foata normal form. 12/251 useless extension candidates. Maximal degree in co-relation 305. Up to 118 conditions per place. [2024-11-19 13:47:13,844 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 32 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2024-11-19 13:47:13,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 260 flow [2024-11-19 13:47:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-11-19 13:47:13,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-19 13:47:13,846 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 142 flow. Second operand 4 states and 115 transitions. [2024-11-19 13:47:13,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 260 flow [2024-11-19 13:47:13,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:13,850 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 154 flow [2024-11-19 13:47:13,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-19 13:47:13,851 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-19 13:47:13,851 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 154 flow [2024-11-19 13:47:13,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:13,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:13,852 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:13,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:47:13,852 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:13,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1085745, now seen corresponding path program 1 times [2024-11-19 13:47:13,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:13,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070655331] [2024-11-19 13:47:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:13,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:47:13,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:47:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:47:13,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:47:13,919 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:47:13,919 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-19 13:47:13,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-19 13:47:13,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-19 13:47:13,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-19 13:47:13,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-19 13:47:13,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-19 13:47:13,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-19 13:47:13,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-19 13:47:13,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-19 13:47:13,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2024-11-19 13:47:13,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:47:13,923 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-19 13:47:13,924 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:47:13,924 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 13:47:13,943 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-19 13:47:13,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 59 transitions, 162 flow [2024-11-19 13:47:13,970 INFO L124 PetriNetUnfolderBase]: 57/387 cut-off events. [2024-11-19 13:47:13,971 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-19 13:47:13,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 387 events. 57/387 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2228 event pairs, 2 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 237. Up to 32 conditions per place. [2024-11-19 13:47:13,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 59 transitions, 162 flow [2024-11-19 13:47:13,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 58 transitions, 160 flow [2024-11-19 13:47:13,974 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:47:13,976 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;@5f98d5e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:47:13,976 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-19 13:47:13,978 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:47:13,979 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 13:47:13,979 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:47:13,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:13,979 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:47:13,979 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:13,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash 450871449, now seen corresponding path program 1 times [2024-11-19 13:47:13,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:13,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358561276] [2024-11-19 13:47:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:13,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:14,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:14,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358561276] [2024-11-19 13:47:14,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358561276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:14,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:14,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:14,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214477337] [2024-11-19 13:47:14,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:14,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:14,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:14,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-19 13:47:14,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:14,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:14,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-19 13:47:14,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:14,369 INFO L124 PetriNetUnfolderBase]: 1575/3507 cut-off events. [2024-11-19 13:47:14,369 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2024-11-19 13:47:14,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6602 conditions, 3507 events. 1575/3507 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 29604 event pairs, 669 based on Foata normal form. 2/3058 useless extension candidates. Maximal degree in co-relation 2329. Up to 1361 conditions per place. [2024-11-19 13:47:14,397 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 53 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2024-11-19 13:47:14,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 364 flow [2024-11-19 13:47:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:14,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-11-19 13:47:14,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2024-11-19 13:47:14,399 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 160 flow. Second operand 4 states and 160 transitions. [2024-11-19 13:47:14,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 364 flow [2024-11-19 13:47:14,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:47:14,403 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 232 flow [2024-11-19 13:47:14,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2024-11-19 13:47:14,405 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2024-11-19 13:47:14,405 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 232 flow [2024-11-19 13:47:14,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:14,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:14,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:47:14,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:47:14,406 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:14,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:14,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1091259600, now seen corresponding path program 1 times [2024-11-19 13:47:14,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:14,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463914365] [2024-11-19 13:47:14,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:14,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:14,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:14,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463914365] [2024-11-19 13:47:14,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463914365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:14,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:14,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:14,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426332658] [2024-11-19 13:47:14,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:14,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:14,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:14,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:14,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:14,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-19 13:47:14,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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) [2024-11-19 13:47:14,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:14,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-19 13:47:14,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:14,827 INFO L124 PetriNetUnfolderBase]: 1663/3567 cut-off events. [2024-11-19 13:47:14,828 INFO L125 PetriNetUnfolderBase]: For 912/912 co-relation queries the response was YES. [2024-11-19 13:47:14,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7484 conditions, 3567 events. 1663/3567 cut-off events. For 912/912 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 29856 event pairs, 697 based on Foata normal form. 28/3342 useless extension candidates. Maximal degree in co-relation 2629. Up to 1497 conditions per place. [2024-11-19 13:47:14,845 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 55 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-11-19 13:47:14,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 88 transitions, 428 flow [2024-11-19 13:47:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-19 13:47:14,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-19 13:47:14,850 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 232 flow. Second operand 4 states and 162 transitions. [2024-11-19 13:47:14,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 88 transitions, 428 flow [2024-11-19 13:47:14,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 428 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:47:14,855 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 268 flow [2024-11-19 13:47:14,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-11-19 13:47:14,857 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2024-11-19 13:47:14,857 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 268 flow [2024-11-19 13:47:14,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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) [2024-11-19 13:47:14,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:14,858 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:14,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:47:14,859 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:14,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1717876919, now seen corresponding path program 1 times [2024-11-19 13:47:14,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:14,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234924888] [2024-11-19 13:47:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:14,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:14,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:14,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234924888] [2024-11-19 13:47:14,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234924888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:14,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311850519] [2024-11-19 13:47:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:14,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:14,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:14,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:14,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:47:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:15,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:15,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:15,059 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:15,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311850519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:15,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:15,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:47:15,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420739305] [2024-11-19 13:47:15,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:15,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:15,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:15,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:15,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:15,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-19 13:47:15,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:15,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:15,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-19 13:47:15,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:15,381 INFO L124 PetriNetUnfolderBase]: 1571/3470 cut-off events. [2024-11-19 13:47:15,382 INFO L125 PetriNetUnfolderBase]: For 1496/1496 co-relation queries the response was YES. [2024-11-19 13:47:15,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7752 conditions, 3470 events. 1571/3470 cut-off events. For 1496/1496 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 29204 event pairs, 329 based on Foata normal form. 4/3239 useless extension candidates. Maximal degree in co-relation 2751. Up to 1332 conditions per place. [2024-11-19 13:47:15,398 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 54 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-11-19 13:47:15,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 464 flow [2024-11-19 13:47:15,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:47:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:47:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-11-19 13:47:15,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-11-19 13:47:15,400 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 268 flow. Second operand 6 states and 210 transitions. [2024-11-19 13:47:15,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 464 flow [2024-11-19 13:47:15,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:15,404 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 278 flow [2024-11-19 13:47:15,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-11-19 13:47:15,404 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2024-11-19 13:47:15,405 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 278 flow [2024-11-19 13:47:15,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:15,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:15,405 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:15,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:15,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 13:47:15,606 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:15,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash -634919061, now seen corresponding path program 1 times [2024-11-19 13:47:15,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:15,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277490621] [2024-11-19 13:47:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:15,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:15,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:15,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277490621] [2024-11-19 13:47:15,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277490621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:15,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267510522] [2024-11-19 13:47:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:15,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:15,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:15,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:15,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:47:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:15,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:15,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:15,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:15,799 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:15,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267510522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:15,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:15,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:47:15,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298478004] [2024-11-19 13:47:15,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:15,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:15,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:15,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:15,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:15,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-19 13:47:15,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:15,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:15,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-19 13:47:15,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:16,142 INFO L124 PetriNetUnfolderBase]: 1615/3473 cut-off events. [2024-11-19 13:47:16,142 INFO L125 PetriNetUnfolderBase]: For 2113/2113 co-relation queries the response was YES. [2024-11-19 13:47:16,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7919 conditions, 3473 events. 1615/3473 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 28986 event pairs, 481 based on Foata normal form. 28/3276 useless extension candidates. Maximal degree in co-relation 2805. Up to 1304 conditions per place. [2024-11-19 13:47:16,158 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 60 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-11-19 13:47:16,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 94 transitions, 498 flow [2024-11-19 13:47:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:47:16,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:47:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 216 transitions. [2024-11-19 13:47:16,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6101694915254238 [2024-11-19 13:47:16,160 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 278 flow. Second operand 6 states and 216 transitions. [2024-11-19 13:47:16,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 94 transitions, 498 flow [2024-11-19 13:47:16,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 478 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:16,163 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 276 flow [2024-11-19 13:47:16,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-19 13:47:16,164 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2024-11-19 13:47:16,164 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 276 flow [2024-11-19 13:47:16,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:16,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:16,165 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 13:47:16,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 13:47:16,366 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,SelfDestructingSolverStorable6 [2024-11-19 13:47:16,366 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:16,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:16,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1714576488, now seen corresponding path program 1 times [2024-11-19 13:47:16,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:16,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671075056] [2024-11-19 13:47:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:16,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:16,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:16,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671075056] [2024-11-19 13:47:16,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671075056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:16,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751496811] [2024-11-19 13:47:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:16,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:16,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:16,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:16,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 13:47:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:16,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:16,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:16,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:16,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:16,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751496811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:16,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:16,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 13:47:16,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500926494] [2024-11-19 13:47:16,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:16,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:47:16,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:16,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:47:16,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:47:16,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-19 13:47:16,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 276 flow. Second operand has 12 states, 12 states have (on average 25.916666666666668) internal successors, (311), 12 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:16,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:16,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-19 13:47:16,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:16,933 INFO L124 PetriNetUnfolderBase]: 1567/3432 cut-off events. [2024-11-19 13:47:16,934 INFO L125 PetriNetUnfolderBase]: For 2265/2265 co-relation queries the response was YES. [2024-11-19 13:47:16,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7862 conditions, 3432 events. 1567/3432 cut-off events. For 2265/2265 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28455 event pairs, 320 based on Foata normal form. 4/3209 useless extension candidates. Maximal degree in co-relation 2790. Up to 1332 conditions per place. [2024-11-19 13:47:16,951 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 56 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-11-19 13:47:16,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 91 transitions, 494 flow [2024-11-19 13:47:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:47:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:47:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-11-19 13:47:16,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5738498789346247 [2024-11-19 13:47:16,952 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 276 flow. Second operand 7 states and 237 transitions. [2024-11-19 13:47:16,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 91 transitions, 494 flow [2024-11-19 13:47:16,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 466 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-19 13:47:16,958 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 278 flow [2024-11-19 13:47:16,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-11-19 13:47:16,959 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 16 predicate places. [2024-11-19 13:47:16,959 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 278 flow [2024-11-19 13:47:16,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.916666666666668) internal successors, (311), 12 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:16,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:16,960 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:16,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 13:47:17,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:17,164 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:17,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1792346030, now seen corresponding path program 1 times [2024-11-19 13:47:17,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:17,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540101969] [2024-11-19 13:47:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:17,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:17,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:17,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540101969] [2024-11-19 13:47:17,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540101969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588937968] [2024-11-19 13:47:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:17,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:17,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:17,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:17,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 13:47:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:17,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:17,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:17,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:17,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588937968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:17,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:17,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 13:47:17,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773202499] [2024-11-19 13:47:17,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:17,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:47:17,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:17,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:47:17,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:47:17,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-19 13:47:17,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 278 flow. Second operand has 12 states, 12 states have (on average 26.0) internal successors, (312), 12 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:17,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:17,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-19 13:47:17,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:17,678 INFO L124 PetriNetUnfolderBase]: 1567/3400 cut-off events. [2024-11-19 13:47:17,678 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-11-19 13:47:17,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7735 conditions, 3400 events. 1567/3400 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28282 event pairs, 295 based on Foata normal form. 28/3231 useless extension candidates. Maximal degree in co-relation 2755. Up to 1304 conditions per place. [2024-11-19 13:47:17,694 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 64 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-11-19 13:47:17,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 530 flow [2024-11-19 13:47:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:47:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:47:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 245 transitions. [2024-11-19 13:47:17,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-11-19 13:47:17,696 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 278 flow. Second operand 7 states and 245 transitions. [2024-11-19 13:47:17,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 530 flow [2024-11-19 13:47:17,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 99 transitions, 502 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 13:47:17,699 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 282 flow [2024-11-19 13:47:17,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-19 13:47:17,700 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2024-11-19 13:47:17,700 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 282 flow [2024-11-19 13:47:17,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.0) internal successors, (312), 12 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:17,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:17,700 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-19 13:47:17,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:17,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:17,901 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:17,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:17,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1559451297, now seen corresponding path program 1 times [2024-11-19 13:47:17,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:17,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315530691] [2024-11-19 13:47:17,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:17,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:47:17,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:47:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:47:17,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:47:17,926 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:47:17,926 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-19 13:47:17,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-19 13:47:17,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-19 13:47:17,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-19 13:47:17,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-19 13:47:17,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-19 13:47:17,926 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-19 13:47:17,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-19 13:47:17,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-19 13:47:17,927 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2024-11-19 13:47:17,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:47:17,927 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:17,927 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:47:17,928 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 13:47:17,948 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-11-19 13:47:17,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 73 transitions, 218 flow [2024-11-19 13:47:18,015 INFO L124 PetriNetUnfolderBase]: 336/1466 cut-off events. [2024-11-19 13:47:18,015 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-11-19 13:47:18,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 1466 events. 336/1466 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 10430 event pairs, 52 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 941. Up to 192 conditions per place. [2024-11-19 13:47:18,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 73 transitions, 218 flow [2024-11-19 13:47:18,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 72 transitions, 216 flow [2024-11-19 13:47:18,023 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:47:18,023 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;@5f98d5e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:47:18,024 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-19 13:47:18,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:47:18,026 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 13:47:18,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:47:18,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:18,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:47:18,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:18,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:18,027 INFO L85 PathProgramCache]: Analyzing trace with hash 518635753, now seen corresponding path program 1 times [2024-11-19 13:47:18,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:18,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444586854] [2024-11-19 13:47:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:18,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:18,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:18,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444586854] [2024-11-19 13:47:18,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444586854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:18,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:18,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:18,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255260493] [2024-11-19 13:47:18,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:18,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:18,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:18,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:18,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:18,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-19 13:47:18,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:18,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:18,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-19 13:47:18,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:20,741 INFO L124 PetriNetUnfolderBase]: 21857/38845 cut-off events. [2024-11-19 13:47:20,741 INFO L125 PetriNetUnfolderBase]: For 5110/5110 co-relation queries the response was YES. [2024-11-19 13:47:20,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75258 conditions, 38845 events. 21857/38845 cut-off events. For 5110/5110 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 375982 event pairs, 9852 based on Foata normal form. 2/35204 useless extension candidates. Maximal degree in co-relation 22487. Up to 17821 conditions per place. [2024-11-19 13:47:21,095 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 67 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2024-11-19 13:47:21,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 472 flow [2024-11-19 13:47:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-19 13:47:21,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.678082191780822 [2024-11-19 13:47:21,097 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 216 flow. Second operand 4 states and 198 transitions. [2024-11-19 13:47:21,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 472 flow [2024-11-19 13:47:21,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 106 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:47:21,101 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 288 flow [2024-11-19 13:47:21,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-11-19 13:47:21,103 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-11-19 13:47:21,103 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 288 flow [2024-11-19 13:47:21,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:21,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:21,105 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:47:21,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 13:47:21,105 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:21,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1103274632, now seen corresponding path program 1 times [2024-11-19 13:47:21,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:21,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303058314] [2024-11-19 13:47:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:21,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303058314] [2024-11-19 13:47:21,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303058314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:21,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:21,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800811988] [2024-11-19 13:47:21,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:21,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:21,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:21,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:21,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:21,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-19 13:47:21,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:21,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:21,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-19 13:47:21,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:23,989 INFO L124 PetriNetUnfolderBase]: 22713/39641 cut-off events. [2024-11-19 13:47:23,989 INFO L125 PetriNetUnfolderBase]: For 9742/9742 co-relation queries the response was YES. [2024-11-19 13:47:24,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82764 conditions, 39641 events. 22713/39641 cut-off events. For 9742/9742 co-relation queries the response was YES. Maximal size of possible extension queue 1883. Compared 380013 event pairs, 10081 based on Foata normal form. 60/37256 useless extension candidates. Maximal degree in co-relation 25155. Up to 19013 conditions per place. [2024-11-19 13:47:24,219 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 70 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-11-19 13:47:24,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 540 flow [2024-11-19 13:47:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-19 13:47:24,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6883561643835616 [2024-11-19 13:47:24,221 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 288 flow. Second operand 4 states and 201 transitions. [2024-11-19 13:47:24,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 540 flow [2024-11-19 13:47:24,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:47:24,226 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 324 flow [2024-11-19 13:47:24,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-11-19 13:47:24,227 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2024-11-19 13:47:24,227 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 324 flow [2024-11-19 13:47:24,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:24,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:24,227 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:24,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 13:47:24,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:24,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash 408877385, now seen corresponding path program 1 times [2024-11-19 13:47:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:24,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310314503] [2024-11-19 13:47:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:24,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:24,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:24,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310314503] [2024-11-19 13:47:24,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310314503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:24,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193811661] [2024-11-19 13:47:24,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:24,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:24,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:24,287 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) [2024-11-19 13:47:24,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 13:47:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:24,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:24,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:24,380 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:24,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193811661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:24,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:24,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:47:24,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051486166] [2024-11-19 13:47:24,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:24,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:24,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:24,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:24,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:24,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-19 13:47:24,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:24,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:24,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-19 13:47:24,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:27,505 INFO L124 PetriNetUnfolderBase]: 21841/38750 cut-off events. [2024-11-19 13:47:27,505 INFO L125 PetriNetUnfolderBase]: For 14584/14584 co-relation queries the response was YES. [2024-11-19 13:47:27,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84450 conditions, 38750 events. 21841/38750 cut-off events. For 14584/14584 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 374225 event pairs, 4787 based on Foata normal form. 12/36471 useless extension candidates. Maximal degree in co-relation 25699. Up to 17653 conditions per place. [2024-11-19 13:47:27,718 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 70 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-11-19 13:47:27,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 111 transitions, 580 flow [2024-11-19 13:47:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:47:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:47:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 262 transitions. [2024-11-19 13:47:27,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5981735159817352 [2024-11-19 13:47:27,720 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 324 flow. Second operand 6 states and 262 transitions. [2024-11-19 13:47:27,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 111 transitions, 580 flow [2024-11-19 13:47:27,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:27,733 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 334 flow [2024-11-19 13:47:27,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-11-19 13:47:27,734 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2024-11-19 13:47:27,734 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 334 flow [2024-11-19 13:47:27,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:27,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:27,735 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 13:47:27,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:27,935 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,SelfDestructingSolverStorable12 [2024-11-19 13:47:27,936 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:27,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash -209702433, now seen corresponding path program 1 times [2024-11-19 13:47:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:27,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150103733] [2024-11-19 13:47:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:27,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:27,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150103733] [2024-11-19 13:47:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150103733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161951305] [2024-11-19 13:47:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:27,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:27,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:27,989 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) [2024-11-19 13:47:27,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 13:47:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:28,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:28,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:28,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:28,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161951305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:28,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:28,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 13:47:28,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636802018] [2024-11-19 13:47:28,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:28,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:47:28,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:28,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:47:28,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:47:28,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-19 13:47:28,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 31.916666666666668) internal successors, (383), 12 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:28,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:28,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-19 13:47:28,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:31,271 INFO L124 PetriNetUnfolderBase]: 21825/38719 cut-off events. [2024-11-19 13:47:31,271 INFO L125 PetriNetUnfolderBase]: For 19249/19249 co-relation queries the response was YES. [2024-11-19 13:47:31,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85295 conditions, 38719 events. 21825/38719 cut-off events. For 19249/19249 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 376082 event pairs, 6283 based on Foata normal form. 12/36464 useless extension candidates. Maximal degree in co-relation 25993. Up to 17653 conditions per place. [2024-11-19 13:47:31,490 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 78 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-11-19 13:47:31,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 664 flow [2024-11-19 13:47:31,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 13:47:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 13:47:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2024-11-19 13:47:31,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-19 13:47:31,492 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 334 flow. Second operand 9 states and 365 transitions. [2024-11-19 13:47:31,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 664 flow [2024-11-19 13:47:31,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 123 transitions, 632 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 13:47:31,502 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 360 flow [2024-11-19 13:47:31,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=360, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-19 13:47:31,503 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2024-11-19 13:47:31,504 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 360 flow [2024-11-19 13:47:31,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.916666666666668) internal successors, (383), 12 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:31,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:31,504 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:31,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 13:47:31,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:31,705 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:31,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1014496338, now seen corresponding path program 1 times [2024-11-19 13:47:31,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:31,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957847352] [2024-11-19 13:47:31,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:31,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:31,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:31,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957847352] [2024-11-19 13:47:31,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957847352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:31,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433853235] [2024-11-19 13:47:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:31,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:31,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:31,753 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) [2024-11-19 13:47:31,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 13:47:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:31,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:31,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:31,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:31,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433853235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:31,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:31,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:47:31,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35476835] [2024-11-19 13:47:31,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:31,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:31,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:31,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:31,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:31,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-19 13:47:31,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:31,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:31,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-19 13:47:31,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:34,889 INFO L124 PetriNetUnfolderBase]: 22269/38888 cut-off events. [2024-11-19 13:47:34,889 INFO L125 PetriNetUnfolderBase]: For 19584/19584 co-relation queries the response was YES. [2024-11-19 13:47:34,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85905 conditions, 38888 events. 22269/38888 cut-off events. For 19584/19584 co-relation queries the response was YES. Maximal size of possible extension queue 1877. Compared 369567 event pairs, 4422 based on Foata normal form. 180/36803 useless extension candidates. Maximal degree in co-relation 26208. Up to 15201 conditions per place. [2024-11-19 13:47:35,122 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 81 selfloop transitions, 13 changer transitions 0/122 dead transitions. [2024-11-19 13:47:35,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 660 flow [2024-11-19 13:47:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:47:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:47:35,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2024-11-19 13:47:35,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6187214611872146 [2024-11-19 13:47:35,123 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 360 flow. Second operand 6 states and 271 transitions. [2024-11-19 13:47:35,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 660 flow [2024-11-19 13:47:35,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 630 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 13:47:35,135 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 352 flow [2024-11-19 13:47:35,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-11-19 13:47:35,136 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 16 predicate places. [2024-11-19 13:47:35,136 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 352 flow [2024-11-19 13:47:35,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:35,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:35,136 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:35,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 13:47:35,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:35,337 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:35,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:35,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1384615918, now seen corresponding path program 1 times [2024-11-19 13:47:35,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:35,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424262072] [2024-11-19 13:47:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:35,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424262072] [2024-11-19 13:47:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424262072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607044490] [2024-11-19 13:47:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:35,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:35,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:35,393 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) [2024-11-19 13:47:35,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 13:47:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:35,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:35,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:35,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:35,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607044490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:35,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:35,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 13:47:35,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176619900] [2024-11-19 13:47:35,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:35,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:47:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:47:35,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:47:35,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-19 13:47:35,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 352 flow. Second operand has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:35,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:35,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-19 13:47:35,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:38,715 INFO L124 PetriNetUnfolderBase]: 21825/38264 cut-off events. [2024-11-19 13:47:38,716 INFO L125 PetriNetUnfolderBase]: For 19818/19818 co-relation queries the response was YES. [2024-11-19 13:47:38,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84841 conditions, 38264 events. 21825/38264 cut-off events. For 19818/19818 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 364552 event pairs, 4212 based on Foata normal form. 180/36359 useless extension candidates. Maximal degree in co-relation 25817. Up to 15201 conditions per place. [2024-11-19 13:47:38,920 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 98 selfloop transitions, 17 changer transitions 0/143 dead transitions. [2024-11-19 13:47:38,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 143 transitions, 762 flow [2024-11-19 13:47:38,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 13:47:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 13:47:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 383 transitions. [2024-11-19 13:47:38,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5829528158295282 [2024-11-19 13:47:38,921 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 352 flow. Second operand 9 states and 383 transitions. [2024-11-19 13:47:38,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 143 transitions, 762 flow [2024-11-19 13:47:38,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 143 transitions, 726 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 13:47:38,933 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 378 flow [2024-11-19 13:47:38,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=378, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2024-11-19 13:47:38,934 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 19 predicate places. [2024-11-19 13:47:38,934 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 378 flow [2024-11-19 13:47:38,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:38,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:38,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:38,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 13:47:39,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 13:47:39,135 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:39,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:39,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1345305222, now seen corresponding path program 1 times [2024-11-19 13:47:39,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:39,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724869824] [2024-11-19 13:47:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:39,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:47:39,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724869824] [2024-11-19 13:47:39,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724869824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:39,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:39,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:39,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152030554] [2024-11-19 13:47:39,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:39,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:39,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:39,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:39,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:39,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-19 13:47:39,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:39,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:39,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-19 13:47:39,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:42,305 INFO L124 PetriNetUnfolderBase]: 23397/39019 cut-off events. [2024-11-19 13:47:42,305 INFO L125 PetriNetUnfolderBase]: For 19473/19473 co-relation queries the response was YES. [2024-11-19 13:47:42,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88083 conditions, 39019 events. 23397/39019 cut-off events. For 19473/19473 co-relation queries the response was YES. Maximal size of possible extension queue 1874. Compared 355658 event pairs, 10958 based on Foata normal form. 922/38595 useless extension candidates. Maximal degree in co-relation 26408. Up to 20283 conditions per place. [2024-11-19 13:47:42,509 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 76 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2024-11-19 13:47:42,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 115 transitions, 652 flow [2024-11-19 13:47:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-19 13:47:42,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952054794520548 [2024-11-19 13:47:42,510 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 378 flow. Second operand 4 states and 203 transitions. [2024-11-19 13:47:42,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 115 transitions, 652 flow [2024-11-19 13:47:42,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 618 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 13:47:42,519 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 392 flow [2024-11-19 13:47:42,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=392, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2024-11-19 13:47:42,520 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 19 predicate places. [2024-11-19 13:47:42,520 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 392 flow [2024-11-19 13:47:42,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:42,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:42,520 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:42,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 13:47:42,520 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:42,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:42,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1246143617, now seen corresponding path program 1 times [2024-11-19 13:47:42,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:42,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245259954] [2024-11-19 13:47:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:47:42,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:42,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245259954] [2024-11-19 13:47:42,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245259954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:42,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:42,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:42,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920957372] [2024-11-19 13:47:42,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:42,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:42,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:42,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:42,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:42,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-11-19 13:47:42,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:42,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:42,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-11-19 13:47:42,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:45,481 INFO L124 PetriNetUnfolderBase]: 23397/37689 cut-off events. [2024-11-19 13:47:45,482 INFO L125 PetriNetUnfolderBase]: For 21317/21317 co-relation queries the response was YES. [2024-11-19 13:47:45,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89864 conditions, 37689 events. 23397/37689 cut-off events. For 21317/21317 co-relation queries the response was YES. Maximal size of possible extension queue 1779. Compared 328855 event pairs, 11672 based on Foata normal form. 1330/38811 useless extension candidates. Maximal degree in co-relation 45203. Up to 20283 conditions per place. [2024-11-19 13:47:45,718 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 76 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2024-11-19 13:47:45,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 115 transitions, 664 flow [2024-11-19 13:47:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-19 13:47:45,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952054794520548 [2024-11-19 13:47:45,720 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 392 flow. Second operand 4 states and 203 transitions. [2024-11-19 13:47:45,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 115 transitions, 664 flow [2024-11-19 13:47:45,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 115 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:45,773 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 428 flow [2024-11-19 13:47:45,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-11-19 13:47:45,774 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 23 predicate places. [2024-11-19 13:47:45,774 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 428 flow [2024-11-19 13:47:45,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:45,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:45,774 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-19 13:47:45,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 13:47:45,775 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:45,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:45,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1549216016, now seen corresponding path program 1 times [2024-11-19 13:47:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:45,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866413558] [2024-11-19 13:47:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:47:45,799 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:47:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:47:45,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:47:45,815 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:47:45,815 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-19 13:47:45,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-19 13:47:45,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-19 13:47:45,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-19 13:47:45,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-19 13:47:45,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-19 13:47:45,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-19 13:47:45,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-19 13:47:45,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-19 13:47:45,817 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2024-11-19 13:47:45,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 13:47:45,817 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:45,819 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:47:45,819 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 13:47:45,849 INFO L143 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2024-11-19 13:47:45,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 278 flow [2024-11-19 13:47:46,280 INFO L124 PetriNetUnfolderBase]: 1817/5929 cut-off events. [2024-11-19 13:47:46,280 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2024-11-19 13:47:46,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8070 conditions, 5929 events. 1817/5929 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 51261 event pairs, 540 based on Foata normal form. 0/4319 useless extension candidates. Maximal degree in co-relation 3890. Up to 1024 conditions per place. [2024-11-19 13:47:46,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 87 transitions, 278 flow [2024-11-19 13:47:46,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 86 transitions, 276 flow [2024-11-19 13:47:46,309 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:47:46,309 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;@5f98d5e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:47:46,309 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-19 13:47:46,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:47:46,311 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 13:47:46,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:47:46,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:46,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 13:47:46,311 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-19 13:47:46,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:46,311 INFO L85 PathProgramCache]: Analyzing trace with hash 599760327, now seen corresponding path program 1 times [2024-11-19 13:47:46,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:46,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057071755] [2024-11-19 13:47:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:46,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:46,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:46,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057071755] [2024-11-19 13:47:46,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057071755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:46,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:46,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:46,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391507403] [2024-11-19 13:47:46,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:46,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:46,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:46,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:46,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:46,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 87 [2024-11-19 13:47:46,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:46,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:46,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 87 [2024-11-19 13:47:46,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand