./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack_longer-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/stack_longer-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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:47:52,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:47:52,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:47:52,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:47:52,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:47:52,740 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:47:52,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:47:52,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:47:52,741 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:47:52,741 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:47:52,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:47:52,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:47:52,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:47:52,742 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:47:52,742 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:47:52,742 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:47:52,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:47:52,743 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:47:52,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:47:52,743 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:47:52,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:47:52,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:47:52,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:47:52,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:47:52,745 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:47:52,745 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:47:52,745 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:47:52,746 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:47:52,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:47:52,746 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:47:52,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:47:52,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:47:52,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:47:52,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:47:52,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:47:52,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:47:52,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:47:52,748 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:47:52,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:47:52,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:47:52,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:47:52,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:47:52,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:47:52,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:47:52,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2024-11-19 13:47:52,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:47:52,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:47:52,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:47:52,954 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:47:52,954 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:47:52,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-19 13:47:54,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:47:54,458 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:47:54,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-19 13:47:54,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7c5baca/b64a7fdd6c1f4a29a7b53af7e305d975/FLAG2de453044 [2024-11-19 13:47:54,496 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7c5baca/b64a7fdd6c1f4a29a7b53af7e305d975 [2024-11-19 13:47:54,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:47:54,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:47:54,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:47:54,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:47:54,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:47:54,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:54" (1/1) ... [2024-11-19 13:47:54,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45abefd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:54, skipping insertion in model container [2024-11-19 13:47:54,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:54" (1/1) ... [2024-11-19 13:47:54,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:47:54,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:47:54,909 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:47:54,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:47:55,071 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:47:55,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55 WrapperNode [2024-11-19 13:47:55,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:47:55,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:47:55,072 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:47:55,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:47:55,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,148 INFO L138 Inliner]: procedures = 277, calls = 431, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 557 [2024-11-19 13:47:55,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:47:55,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:47:55,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:47:55,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:47:55,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,199 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 402, 5]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 400, 5]. The 1 writes are split as follows [0, 1, 0]. [2024-11-19 13:47:55,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:47:55,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:47:55,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:47:55,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:47:55,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (1/1) ... [2024-11-19 13:47:55,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:47:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:55,269 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 13:47:55,271 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 13:47:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 13:47:55,326 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 13:47:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 13:47:55,326 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 13:47:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:47:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:47:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:47:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:47:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:47:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:47:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:47:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:47:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:47:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:47:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:47:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:47:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:47:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:47:55,330 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 13:47:55,475 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:47:55,477 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:47:56,099 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:47:56,103 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:48:00,043 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:48:00,044 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 13:48:00,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:00 BoogieIcfgContainer [2024-11-19 13:48:00,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:48:00,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:48:00,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:48:00,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:48:00,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:47:54" (1/3) ... [2024-11-19 13:48:00,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daa5293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:48:00, skipping insertion in model container [2024-11-19 13:48:00,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:55" (2/3) ... [2024-11-19 13:48:00,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daa5293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:48:00, skipping insertion in model container [2024-11-19 13:48:00,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:48:00" (3/3) ... [2024-11-19 13:48:00,050 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-11-19 13:48:00,064 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:48:00,065 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 13:48:00,065 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:48:00,128 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 13:48:00,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-19 13:48:00,203 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-19 13:48:00,204 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:48:00,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-19 13:48:00,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-19 13:48:00,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-11-19 13:48:00,221 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:48:00,227 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;@15020eed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:48:00,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-19 13:48:00,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:48:00,248 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-19 13:48:00,248 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:48:00,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:00,249 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:00,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:00,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:00,254 INFO L85 PathProgramCache]: Analyzing trace with hash 911882842, now seen corresponding path program 1 times [2024-11-19 13:48:00,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:00,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847433914] [2024-11-19 13:48:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:00,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:00,681 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 13:48:00,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:00,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847433914] [2024-11-19 13:48:00,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847433914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:00,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:00,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:48:00,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732325706] [2024-11-19 13:48:00,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:00,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:00,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:00,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:00,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:48:00,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 13:48:00,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:00,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:48:00,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:01,341 INFO L124 PetriNetUnfolderBase]: 730/1443 cut-off events. [2024-11-19 13:48:01,342 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-19 13:48:01,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1443 events. 730/1443 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7566 event pairs, 224 based on Foata normal form. 40/1335 useless extension candidates. Maximal degree in co-relation 2570. Up to 692 conditions per place. [2024-11-19 13:48:01,354 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 58 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-19 13:48:01,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 298 flow [2024-11-19 13:48:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-19 13:48:01,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-19 13:48:01,369 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 132 transitions. [2024-11-19 13:48:01,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 298 flow [2024-11-19 13:48:01,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:48:01,378 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 128 flow [2024-11-19 13:48:01,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-11-19 13:48:01,385 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-19 13:48:01,387 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 128 flow [2024-11-19 13:48:01,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 13:48:01,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:01,388 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:01,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:48:01,388 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:01,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash 389953725, now seen corresponding path program 1 times [2024-11-19 13:48:01,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:01,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733012200] [2024-11-19 13:48:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:01,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:01,571 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 13:48:01,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:01,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733012200] [2024-11-19 13:48:01,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733012200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:01,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:01,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574234662] [2024-11-19 13:48:01,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:01,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:01,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:01,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:48:01,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 13:48:01,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:01,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:48:01,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:01,912 INFO L124 PetriNetUnfolderBase]: 1180/2392 cut-off events. [2024-11-19 13:48:01,912 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-11-19 13:48:01,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4819 conditions, 2392 events. 1180/2392 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13827 event pairs, 613 based on Foata normal form. 74/2303 useless extension candidates. Maximal degree in co-relation 4166. Up to 1299 conditions per place. [2024-11-19 13:48:01,928 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-19 13:48:01,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 399 flow [2024-11-19 13:48:01,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-19 13:48:01,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-19 13:48:01,930 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 128 flow. Second operand 4 states and 132 transitions. [2024-11-19 13:48:01,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 399 flow [2024-11-19 13:48:01,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:48:01,934 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 152 flow [2024-11-19 13:48:01,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-11-19 13:48:01,934 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-11-19 13:48:01,935 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 152 flow [2024-11-19 13:48:01,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 13:48:01,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:01,935 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:01,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:48:01,936 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:01,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:01,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1936799459, now seen corresponding path program 1 times [2024-11-19 13:48:01,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:01,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962193604] [2024-11-19 13:48:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:01,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:02,090 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 13:48:02,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:02,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962193604] [2024-11-19 13:48:02,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962193604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:02,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:02,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:02,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491310975] [2024-11-19 13:48:02,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:02,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:02,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:02,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:02,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:02,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:48:02,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:02,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:02,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:48:02,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:02,634 INFO L124 PetriNetUnfolderBase]: 1703/3321 cut-off events. [2024-11-19 13:48:02,634 INFO L125 PetriNetUnfolderBase]: For 993/1039 co-relation queries the response was YES. [2024-11-19 13:48:02,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7351 conditions, 3321 events. 1703/3321 cut-off events. For 993/1039 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21038 event pairs, 837 based on Foata normal form. 82/3284 useless extension candidates. Maximal degree in co-relation 5256. Up to 1936 conditions per place. [2024-11-19 13:48:02,650 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 72 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-11-19 13:48:02,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 439 flow [2024-11-19 13:48:02,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-19 13:48:02,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-11-19 13:48:02,652 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 152 flow. Second operand 4 states and 133 transitions. [2024-11-19 13:48:02,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 439 flow [2024-11-19 13:48:02,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:02,655 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-11-19 13:48:02,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-19 13:48:02,656 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-19 13:48:02,656 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-11-19 13:48:02,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:02,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:02,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:02,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:48:02,657 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:02,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:02,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1974550093, now seen corresponding path program 1 times [2024-11-19 13:48:02,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:02,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431786473] [2024-11-19 13:48:02,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:02,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:02,802 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 13:48:02,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:02,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431786473] [2024-11-19 13:48:02,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431786473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:02,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:02,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:02,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368253064] [2024-11-19 13:48:02,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:02,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:48:02,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:02,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:48:02,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:48:02,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-19 13:48:02,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 13:48:02,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:02,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-19 13:48:02,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:03,151 INFO L124 PetriNetUnfolderBase]: 898/2002 cut-off events. [2024-11-19 13:48:03,151 INFO L125 PetriNetUnfolderBase]: For 981/1077 co-relation queries the response was YES. [2024-11-19 13:48:03,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 2002 events. 898/2002 cut-off events. For 981/1077 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11967 event pairs, 285 based on Foata normal form. 76/2030 useless extension candidates. Maximal degree in co-relation 3692. Up to 946 conditions per place. [2024-11-19 13:48:03,174 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 46 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-19 13:48:03,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 334 flow [2024-11-19 13:48:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:48:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:48:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-19 13:48:03,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 13:48:03,176 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 96 transitions. [2024-11-19 13:48:03,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 334 flow [2024-11-19 13:48:03,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:03,184 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 173 flow [2024-11-19 13:48:03,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-19 13:48:03,189 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-11-19 13:48:03,189 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 173 flow [2024-11-19 13:48:03,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 13:48:03,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:03,189 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:03,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:48:03,189 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:03,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash -320082799, now seen corresponding path program 1 times [2024-11-19 13:48:03,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:03,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487594700] [2024-11-19 13:48:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:03,420 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 13:48:03,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:03,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487594700] [2024-11-19 13:48:03,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487594700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:03,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407215005] [2024-11-19 13:48:03,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:03,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:03,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:03,423 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 13:48:03,429 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 13:48:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:03,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:48:03,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:03,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:03,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407215005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:03,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:03,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:48:03,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102548075] [2024-11-19 13:48:03,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:03,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:48:03,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:03,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:48:03,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:48:03,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:48:03,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 13:48:03,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:03,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:48:03,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:03,916 INFO L124 PetriNetUnfolderBase]: 931/2010 cut-off events. [2024-11-19 13:48:03,916 INFO L125 PetriNetUnfolderBase]: For 1022/1128 co-relation queries the response was YES. [2024-11-19 13:48:03,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 2010 events. 931/2010 cut-off events. For 1022/1128 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11432 event pairs, 189 based on Foata normal form. 70/2023 useless extension candidates. Maximal degree in co-relation 2701. Up to 735 conditions per place. [2024-11-19 13:48:03,927 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 87 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-11-19 13:48:03,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 587 flow [2024-11-19 13:48:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:48:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:48:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-11-19 13:48:03,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-19 13:48:03,932 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 173 flow. Second operand 7 states and 188 transitions. [2024-11-19 13:48:03,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 587 flow [2024-11-19 13:48:03,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:03,936 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 229 flow [2024-11-19 13:48:03,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-11-19 13:48:03,939 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-11-19 13:48:03,939 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 229 flow [2024-11-19 13:48:03,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 13:48:03,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:03,939 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:03,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 13:48:04,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:04,140 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:04,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1914927706, now seen corresponding path program 1 times [2024-11-19 13:48:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67645882] [2024-11-19 13:48:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:04,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:04,355 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 13:48:04,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67645882] [2024-11-19 13:48:04,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67645882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:04,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:04,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:04,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034263336] [2024-11-19 13:48:04,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:04,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:04,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:04,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:04,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:04,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:48:04,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 13:48:04,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:04,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:48:04,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:04,614 INFO L124 PetriNetUnfolderBase]: 1173/2605 cut-off events. [2024-11-19 13:48:04,614 INFO L125 PetriNetUnfolderBase]: For 2091/2209 co-relation queries the response was YES. [2024-11-19 13:48:04,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6743 conditions, 2605 events. 1173/2605 cut-off events. For 2091/2209 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 16444 event pairs, 646 based on Foata normal form. 26/2624 useless extension candidates. Maximal degree in co-relation 5210. Up to 1363 conditions per place. [2024-11-19 13:48:04,630 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 63 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-11-19 13:48:04,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 494 flow [2024-11-19 13:48:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-11-19 13:48:04,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-11-19 13:48:04,632 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 229 flow. Second operand 4 states and 115 transitions. [2024-11-19 13:48:04,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 494 flow [2024-11-19 13:48:04,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 486 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:04,637 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 271 flow [2024-11-19 13:48:04,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-11-19 13:48:04,639 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-11-19 13:48:04,639 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 271 flow [2024-11-19 13:48:04,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 13:48:04,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:04,640 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:04,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 13:48:04,640 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:04,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash 431882451, now seen corresponding path program 1 times [2024-11-19 13:48:04,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352318631] [2024-11-19 13:48:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352318631] [2024-11-19 13:48:04,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352318631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733491869] [2024-11-19 13:48:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:04,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:04,747 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 13:48:04,755 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 13:48:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:04,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:48:04,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:04,929 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:04,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733491869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:04,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:04,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:48:04,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115196258] [2024-11-19 13:48:04,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:04,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:48:04,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:04,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:48:04,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:48:04,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:48:04,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 13:48:04,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:04,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:48:04,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:05,216 INFO L124 PetriNetUnfolderBase]: 1483/2948 cut-off events. [2024-11-19 13:48:05,217 INFO L125 PetriNetUnfolderBase]: For 3260/3346 co-relation queries the response was YES. [2024-11-19 13:48:05,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8046 conditions, 2948 events. 1483/2948 cut-off events. For 3260/3346 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 17482 event pairs, 245 based on Foata normal form. 79/2946 useless extension candidates. Maximal degree in co-relation 6189. Up to 1306 conditions per place. [2024-11-19 13:48:05,246 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 78 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2024-11-19 13:48:05,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 653 flow [2024-11-19 13:48:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 13:48:05,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-19 13:48:05,247 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 271 flow. Second operand 4 states and 116 transitions. [2024-11-19 13:48:05,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 653 flow [2024-11-19 13:48:05,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:48:05,255 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 275 flow [2024-11-19 13:48:05,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-11-19 13:48:05,257 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-19 13:48:05,258 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 275 flow [2024-11-19 13:48:05,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 13:48:05,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:05,258 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:05,273 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 13:48:05,458 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 13:48:05,459 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:05,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:05,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1332630911, now seen corresponding path program 1 times [2024-11-19 13:48:05,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:05,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53824887] [2024-11-19 13:48:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:05,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:05,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53824887] [2024-11-19 13:48:05,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53824887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:05,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327146379] [2024-11-19 13:48:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:05,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:05,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:05,624 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 13:48:05,625 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 13:48:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:05,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:48:05,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:05,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327146379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:05,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:05,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 13:48:05,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273076014] [2024-11-19 13:48:05,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:05,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:48:05,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:05,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:48:05,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:48:05,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:48:05,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 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 13:48:05,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:05,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:48:05,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:06,739 INFO L124 PetriNetUnfolderBase]: 2547/5453 cut-off events. [2024-11-19 13:48:06,740 INFO L125 PetriNetUnfolderBase]: For 8542/8788 co-relation queries the response was YES. [2024-11-19 13:48:06,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15524 conditions, 5453 events. 2547/5453 cut-off events. For 8542/8788 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 35097 event pairs, 407 based on Foata normal form. 151/5603 useless extension candidates. Maximal degree in co-relation 8199. Up to 1167 conditions per place. [2024-11-19 13:48:06,781 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 191 selfloop transitions, 33 changer transitions 0/235 dead transitions. [2024-11-19 13:48:06,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 235 transitions, 1624 flow [2024-11-19 13:48:06,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 13:48:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 13:48:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 426 transitions. [2024-11-19 13:48:06,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-11-19 13:48:06,784 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 275 flow. Second operand 16 states and 426 transitions. [2024-11-19 13:48:06,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 235 transitions, 1624 flow [2024-11-19 13:48:06,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 235 transitions, 1502 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 13:48:06,797 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 594 flow [2024-11-19 13:48:06,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=594, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2024-11-19 13:48:06,798 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2024-11-19 13:48:06,798 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 594 flow [2024-11-19 13:48:06,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 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 13:48:06,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:06,799 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:06,816 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 13:48:06,999 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 13:48:07,000 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:07,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1309566049, now seen corresponding path program 1 times [2024-11-19 13:48:07,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:07,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364444837] [2024-11-19 13:48:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:07,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:07,162 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 13:48:07,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:07,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364444837] [2024-11-19 13:48:07,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364444837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:07,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:07,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:48:07,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753685246] [2024-11-19 13:48:07,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:07,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:48:07,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:07,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:48:07,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:48:07,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:07,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 594 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 13:48:07,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:07,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:07,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:08,097 INFO L124 PetriNetUnfolderBase]: 2796/5802 cut-off events. [2024-11-19 13:48:08,097 INFO L125 PetriNetUnfolderBase]: For 9962/10299 co-relation queries the response was YES. [2024-11-19 13:48:08,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 5802 events. 2796/5802 cut-off events. For 9962/10299 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 37042 event pairs, 564 based on Foata normal form. 39/5836 useless extension candidates. Maximal degree in co-relation 13945. Up to 3403 conditions per place. [2024-11-19 13:48:08,136 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 119 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2024-11-19 13:48:08,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 1117 flow [2024-11-19 13:48:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:48:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:48:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-11-19 13:48:08,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5659722222222222 [2024-11-19 13:48:08,138 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 594 flow. Second operand 6 states and 163 transitions. [2024-11-19 13:48:08,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 1117 flow [2024-11-19 13:48:08,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1075 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-11-19 13:48:08,157 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 653 flow [2024-11-19 13:48:08,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-19 13:48:08,158 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-11-19 13:48:08,158 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 653 flow [2024-11-19 13:48:08,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 13:48:08,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:08,159 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:08,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 13:48:08,159 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:08,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash 503455384, now seen corresponding path program 1 times [2024-11-19 13:48:08,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:08,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990539848] [2024-11-19 13:48:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:08,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:08,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990539848] [2024-11-19 13:48:08,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990539848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:08,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:08,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:08,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427270773] [2024-11-19 13:48:08,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:08,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:08,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:08,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:08,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:08,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:48:08,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:08,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:08,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:48:08,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:08,928 INFO L124 PetriNetUnfolderBase]: 3062/6447 cut-off events. [2024-11-19 13:48:08,929 INFO L125 PetriNetUnfolderBase]: For 11345/11483 co-relation queries the response was YES. [2024-11-19 13:48:08,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 6447 events. 3062/6447 cut-off events. For 11345/11483 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 42773 event pairs, 581 based on Foata normal form. 0/6446 useless extension candidates. Maximal degree in co-relation 15404. Up to 2690 conditions per place. [2024-11-19 13:48:08,970 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 143 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2024-11-19 13:48:08,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 172 transitions, 1615 flow [2024-11-19 13:48:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 13:48:08,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-19 13:48:08,972 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 653 flow. Second operand 4 states and 116 transitions. [2024-11-19 13:48:08,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 172 transitions, 1615 flow [2024-11-19 13:48:09,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 172 transitions, 1605 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:09,075 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 665 flow [2024-11-19 13:48:09,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-11-19 13:48:09,075 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-19 13:48:09,076 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 665 flow [2024-11-19 13:48:09,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:09,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:09,076 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:09,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:48:09,077 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:09,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:09,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1695998278, now seen corresponding path program 1 times [2024-11-19 13:48:09,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:09,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173697787] [2024-11-19 13:48:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:09,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:09,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:09,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173697787] [2024-11-19 13:48:09,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173697787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389814618] [2024-11-19 13:48:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:09,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:09,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:09,197 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 13:48:09,202 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 13:48:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:09,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:48:09,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:09,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:09,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389814618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:09,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:09,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:48:09,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294412074] [2024-11-19 13:48:09,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:09,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:48:09,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:09,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:48:09,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:48:09,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:48:09,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 665 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 13:48:09,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:09,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:48:09,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:09,959 INFO L124 PetriNetUnfolderBase]: 3167/6166 cut-off events. [2024-11-19 13:48:09,960 INFO L125 PetriNetUnfolderBase]: For 14505/14517 co-relation queries the response was YES. [2024-11-19 13:48:09,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19479 conditions, 6166 events. 3167/6166 cut-off events. For 14505/14517 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 38651 event pairs, 544 based on Foata normal form. 178/6161 useless extension candidates. Maximal degree in co-relation 18617. Up to 3741 conditions per place. [2024-11-19 13:48:10,131 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 96 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2024-11-19 13:48:10,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 1087 flow [2024-11-19 13:48:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-19 13:48:10,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-19 13:48:10,133 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 665 flow. Second operand 4 states and 112 transitions. [2024-11-19 13:48:10,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 1087 flow [2024-11-19 13:48:10,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 123 transitions, 1065 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:10,153 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 663 flow [2024-11-19 13:48:10,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=663, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-19 13:48:10,153 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-19 13:48:10,154 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 663 flow [2024-11-19 13:48:10,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 13:48:10,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:10,154 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 13:48:10,170 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 13:48:10,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:10,355 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:10,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1036340337, now seen corresponding path program 1 times [2024-11-19 13:48:10,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:10,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936011829] [2024-11-19 13:48:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:10,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:10,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936011829] [2024-11-19 13:48:10,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936011829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:10,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:10,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:48:10,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208814649] [2024-11-19 13:48:10,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:10,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:48:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:48:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:48:10,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:48:10,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 13:48:10,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:10,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:48:10,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:11,152 INFO L124 PetriNetUnfolderBase]: 2926/5852 cut-off events. [2024-11-19 13:48:11,152 INFO L125 PetriNetUnfolderBase]: For 12816/12841 co-relation queries the response was YES. [2024-11-19 13:48:11,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 5852 events. 2926/5852 cut-off events. For 12816/12841 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 36722 event pairs, 615 based on Foata normal form. 178/6027 useless extension candidates. Maximal degree in co-relation 15480. Up to 2981 conditions per place. [2024-11-19 13:48:11,180 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 107 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2024-11-19 13:48:11,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 135 transitions, 1215 flow [2024-11-19 13:48:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:48:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:48:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-19 13:48:11,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-19 13:48:11,182 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 663 flow. Second operand 4 states and 116 transitions. [2024-11-19 13:48:11,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 135 transitions, 1215 flow [2024-11-19 13:48:11,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 135 transitions, 1205 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:48:11,201 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 669 flow [2024-11-19 13:48:11,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=669, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-19 13:48:11,201 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-19 13:48:11,202 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 669 flow [2024-11-19 13:48:11,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 13:48:11,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:11,202 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:11,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 13:48:11,202 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:11,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash 602282097, now seen corresponding path program 1 times [2024-11-19 13:48:11,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:11,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461605052] [2024-11-19 13:48:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:11,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:11,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:11,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461605052] [2024-11-19 13:48:11,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461605052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:11,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:48:11,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 13:48:11,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38240938] [2024-11-19 13:48:11,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:11,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:48:11,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:11,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:48:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:48:11,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:11,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 669 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:11,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:11,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:11,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:11,915 INFO L124 PetriNetUnfolderBase]: 2862/5764 cut-off events. [2024-11-19 13:48:11,915 INFO L125 PetriNetUnfolderBase]: For 14686/14686 co-relation queries the response was YES. [2024-11-19 13:48:11,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18439 conditions, 5764 events. 2862/5764 cut-off events. For 14686/14686 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 36287 event pairs, 455 based on Foata normal form. 104/5863 useless extension candidates. Maximal degree in co-relation 15447. Up to 3054 conditions per place. [2024-11-19 13:48:11,950 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 85 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2024-11-19 13:48:11,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 1104 flow [2024-11-19 13:48:11,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:48:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:48:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-11-19 13:48:11,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-11-19 13:48:11,952 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 669 flow. Second operand 7 states and 162 transitions. [2024-11-19 13:48:11,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 1104 flow [2024-11-19 13:48:11,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 129 transitions, 1080 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:11,973 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 752 flow [2024-11-19 13:48:11,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2024-11-19 13:48:11,973 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2024-11-19 13:48:11,974 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 752 flow [2024-11-19 13:48:11,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:11,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:11,974 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:11,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 13:48:11,974 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:11,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:11,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2052306575, now seen corresponding path program 1 times [2024-11-19 13:48:11,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:11,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185751251] [2024-11-19 13:48:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:11,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:12,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:12,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185751251] [2024-11-19 13:48:12,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185751251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:12,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450900811] [2024-11-19 13:48:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:12,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:12,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:12,135 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 13:48:12,143 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 13:48:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:12,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 13:48:12,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:12,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:48:12,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450900811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:48:12,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:48:12,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-11-19 13:48:12,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688628738] [2024-11-19 13:48:12,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:48:12,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:48:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:48:12,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:48:12,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:12,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:12,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:12,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:12,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:13,063 INFO L124 PetriNetUnfolderBase]: 2819/5729 cut-off events. [2024-11-19 13:48:13,063 INFO L125 PetriNetUnfolderBase]: For 17968/17968 co-relation queries the response was YES. [2024-11-19 13:48:13,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18756 conditions, 5729 events. 2819/5729 cut-off events. For 17968/17968 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 36384 event pairs, 651 based on Foata normal form. 114/5838 useless extension candidates. Maximal degree in co-relation 16035. Up to 2849 conditions per place. [2024-11-19 13:48:13,092 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 87 selfloop transitions, 28 changer transitions 8/132 dead transitions. [2024-11-19 13:48:13,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 132 transitions, 1240 flow [2024-11-19 13:48:13,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:48:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:48:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-11-19 13:48:13,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-11-19 13:48:13,093 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 752 flow. Second operand 7 states and 162 transitions. [2024-11-19 13:48:13,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 132 transitions, 1240 flow [2024-11-19 13:48:13,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 132 transitions, 1221 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:13,114 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 874 flow [2024-11-19 13:48:13,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=874, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2024-11-19 13:48:13,115 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2024-11-19 13:48:13,115 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 874 flow [2024-11-19 13:48:13,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:13,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:13,115 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:13,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 13:48:13,316 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,SelfDestructingSolverStorable13 [2024-11-19 13:48:13,316 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:13,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash -115329390, now seen corresponding path program 2 times [2024-11-19 13:48:13,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:13,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483109551] [2024-11-19 13:48:13,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:13,380 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:13,380 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 13:48:13,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:13,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483109551] [2024-11-19 13:48:13,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483109551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:13,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416553424] [2024-11-19 13:48:13,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:13,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:13,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:13,704 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 13:48:13,706 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 13:48:13,877 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:13,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:13,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 13:48:13,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:13,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:14,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416553424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:14,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:14,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-19 13:48:14,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187163900] [2024-11-19 13:48:14,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:14,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 13:48:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 13:48:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-19 13:48:14,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:14,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 874 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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 13:48:14,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:14,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:14,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:14,838 INFO L124 PetriNetUnfolderBase]: 3024/6198 cut-off events. [2024-11-19 13:48:14,838 INFO L125 PetriNetUnfolderBase]: For 24906/24906 co-relation queries the response was YES. [2024-11-19 13:48:14,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20888 conditions, 6198 events. 3024/6198 cut-off events. For 24906/24906 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 39306 event pairs, 483 based on Foata normal form. 68/6261 useless extension candidates. Maximal degree in co-relation 18502. Up to 1421 conditions per place. [2024-11-19 13:48:14,889 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 185 selfloop transitions, 52 changer transitions 0/246 dead transitions. [2024-11-19 13:48:14,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 246 transitions, 2267 flow [2024-11-19 13:48:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 13:48:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 13:48:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2024-11-19 13:48:14,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4986111111111111 [2024-11-19 13:48:14,891 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 874 flow. Second operand 15 states and 359 transitions. [2024-11-19 13:48:14,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 246 transitions, 2267 flow [2024-11-19 13:48:14,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 246 transitions, 2250 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:14,925 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 1344 flow [2024-11-19 13:48:14,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1344, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-11-19 13:48:14,926 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-11-19 13:48:14,926 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 1344 flow [2024-11-19 13:48:14,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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 13:48:14,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:14,927 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-19 13:48:14,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:15,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 13:48:15,128 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:15,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:15,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1098848616, now seen corresponding path program 2 times [2024-11-19 13:48:15,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:15,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934391648] [2024-11-19 13:48:15,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:15,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:15,188 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:15,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934391648] [2024-11-19 13:48:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934391648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170649783] [2024-11-19 13:48:15,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:15,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:15,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:15,525 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 13:48:15,527 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 13:48:15,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:15,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:15,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 13:48:15,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:15,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:15,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170649783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:15,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:15,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-19 13:48:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12141635] [2024-11-19 13:48:15,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:15,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 13:48:15,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:15,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 13:48:15,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-19 13:48:15,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:48:15,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 1344 flow. Second operand has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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 13:48:15,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:15,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:48:15,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:17,626 INFO L124 PetriNetUnfolderBase]: 5288/10870 cut-off events. [2024-11-19 13:48:17,626 INFO L125 PetriNetUnfolderBase]: For 56184/56184 co-relation queries the response was YES. [2024-11-19 13:48:17,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37873 conditions, 10870 events. 5288/10870 cut-off events. For 56184/56184 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 67704 event pairs, 1005 based on Foata normal form. 234/11099 useless extension candidates. Maximal degree in co-relation 30434. Up to 2603 conditions per place. [2024-11-19 13:48:17,716 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 357 selfloop transitions, 76 changer transitions 0/442 dead transitions. [2024-11-19 13:48:17,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 442 transitions, 4291 flow [2024-11-19 13:48:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 13:48:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 13:48:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 673 transitions. [2024-11-19 13:48:17,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5842013888888888 [2024-11-19 13:48:17,720 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 1344 flow. Second operand 24 states and 673 transitions. [2024-11-19 13:48:17,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 442 transitions, 4291 flow [2024-11-19 13:48:17,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 442 transitions, 4267 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-19 13:48:17,788 INFO L231 Difference]: Finished difference. Result has 142 places, 148 transitions, 2175 flow [2024-11-19 13:48:17,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2175, PETRI_PLACES=142, PETRI_TRANSITIONS=148} [2024-11-19 13:48:17,789 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 96 predicate places. [2024-11-19 13:48:17,790 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 148 transitions, 2175 flow [2024-11-19 13:48:17,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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 13:48:17,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:17,790 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:17,806 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 13:48:17,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:17,991 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:17,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1227207082, now seen corresponding path program 3 times [2024-11-19 13:48:17,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:17,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84006099] [2024-11-19 13:48:17,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:48:17,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:18,118 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 13:48:18,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:18,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84006099] [2024-11-19 13:48:18,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84006099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214612417] [2024-11-19 13:48:18,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:48:18,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:18,719 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 13:48:18,720 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 13:48:18,979 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 13:48:18,980 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:18,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 13:48:18,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:19,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:19,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214612417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:19,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:19,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-19 13:48:19,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155653582] [2024-11-19 13:48:19,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:19,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 13:48:19,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:19,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 13:48:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-11-19 13:48:19,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:19,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 2175 flow. Second operand has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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 13:48:19,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:19,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:19,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:21,840 INFO L124 PetriNetUnfolderBase]: 7243/14777 cut-off events. [2024-11-19 13:48:21,841 INFO L125 PetriNetUnfolderBase]: For 91360/91360 co-relation queries the response was YES. [2024-11-19 13:48:21,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53290 conditions, 14777 events. 7243/14777 cut-off events. For 91360/91360 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 98206 event pairs, 767 based on Foata normal form. 108/14880 useless extension candidates. Maximal degree in co-relation 50420. Up to 2506 conditions per place. [2024-11-19 13:48:22,008 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 307 selfloop transitions, 141 changer transitions 0/457 dead transitions. [2024-11-19 13:48:22,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 457 transitions, 5164 flow [2024-11-19 13:48:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 13:48:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 13:48:22,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 621 transitions. [2024-11-19 13:48:22,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49759615384615385 [2024-11-19 13:48:22,012 INFO L175 Difference]: Start difference. First operand has 142 places, 148 transitions, 2175 flow. Second operand 26 states and 621 transitions. [2024-11-19 13:48:22,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 457 transitions, 5164 flow [2024-11-19 13:48:22,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 457 transitions, 5044 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-11-19 13:48:22,178 INFO L231 Difference]: Finished difference. Result has 170 places, 204 transitions, 3437 flow [2024-11-19 13:48:22,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3437, PETRI_PLACES=170, PETRI_TRANSITIONS=204} [2024-11-19 13:48:22,179 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 124 predicate places. [2024-11-19 13:48:22,179 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 204 transitions, 3437 flow [2024-11-19 13:48:22,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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 13:48:22,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:22,179 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:22,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:22,380 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,SelfDestructingSolverStorable16 [2024-11-19 13:48:22,380 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:22,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:22,380 INFO L85 PathProgramCache]: Analyzing trace with hash -691437826, now seen corresponding path program 4 times [2024-11-19 13:48:22,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:22,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780918269] [2024-11-19 13:48:22,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 13:48:22,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:22,421 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 13:48:22,421 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:22,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:22,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780918269] [2024-11-19 13:48:22,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780918269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:22,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023417685] [2024-11-19 13:48:22,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 13:48:22,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:22,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:22,843 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:22,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 13:48:23,049 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 13:48:23,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:23,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 13:48:23,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:23,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:23,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023417685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:23,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:23,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2024-11-19 13:48:23,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653673636] [2024-11-19 13:48:23,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:23,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 13:48:23,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:23,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 13:48:23,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2024-11-19 13:48:23,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:23,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 204 transitions, 3437 flow. Second operand has 30 states, 30 states have (on average 17.066666666666666) internal successors, (512), 30 states have internal predecessors, (512), 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 13:48:23,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:23,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:23,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:27,546 INFO L124 PetriNetUnfolderBase]: 10036/20424 cut-off events. [2024-11-19 13:48:27,546 INFO L125 PetriNetUnfolderBase]: For 158862/158862 co-relation queries the response was YES. [2024-11-19 13:48:27,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76238 conditions, 20424 events. 10036/20424 cut-off events. For 158862/158862 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 141891 event pairs, 971 based on Foata normal form. 218/20637 useless extension candidates. Maximal degree in co-relation 74838. Up to 3481 conditions per place. [2024-11-19 13:48:27,888 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 420 selfloop transitions, 222 changer transitions 0/651 dead transitions. [2024-11-19 13:48:27,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 651 transitions, 7826 flow [2024-11-19 13:48:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 13:48:27,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-19 13:48:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 882 transitions. [2024-11-19 13:48:27,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-11-19 13:48:27,892 INFO L175 Difference]: Start difference. First operand has 170 places, 204 transitions, 3437 flow. Second operand 37 states and 882 transitions. [2024-11-19 13:48:27,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 651 transitions, 7826 flow [2024-11-19 13:48:28,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 651 transitions, 7516 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-11-19 13:48:28,205 INFO L231 Difference]: Finished difference. Result has 208 places, 279 transitions, 5132 flow [2024-11-19 13:48:28,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5132, PETRI_PLACES=208, PETRI_TRANSITIONS=279} [2024-11-19 13:48:28,206 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 162 predicate places. [2024-11-19 13:48:28,206 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 279 transitions, 5132 flow [2024-11-19 13:48:28,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 17.066666666666666) internal successors, (512), 30 states have internal predecessors, (512), 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 13:48:28,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:28,210 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:28,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 13:48:28,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 13:48:28,411 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:28,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1863887620, now seen corresponding path program 5 times [2024-11-19 13:48:28,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:28,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590697449] [2024-11-19 13:48:28,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 13:48:28,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:28,680 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-19 13:48:28,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:29,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590697449] [2024-11-19 13:48:29,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590697449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427445982] [2024-11-19 13:48:29,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 13:48:29,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:29,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:29,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:29,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 13:48:29,639 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-19 13:48:29,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:29,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 13:48:29,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:29,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:30,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427445982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:30,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:30,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 35 [2024-11-19 13:48:30,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639524686] [2024-11-19 13:48:30,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:30,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-19 13:48:30,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-19 13:48:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 13:48:30,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:30,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 279 transitions, 5132 flow. Second operand has 37 states, 37 states have (on average 17.135135135135137) internal successors, (634), 37 states have internal predecessors, (634), 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 13:48:30,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:30,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:30,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:36,756 INFO L124 PetriNetUnfolderBase]: 14157/28777 cut-off events. [2024-11-19 13:48:36,756 INFO L125 PetriNetUnfolderBase]: For 260212/260212 co-relation queries the response was YES. [2024-11-19 13:48:37,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110141 conditions, 28777 events. 14157/28777 cut-off events. For 260212/260212 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 205221 event pairs, 1285 based on Foata normal form. 316/29088 useless extension candidates. Maximal degree in co-relation 108358. Up to 4918 conditions per place. [2024-11-19 13:48:37,125 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 542 selfloop transitions, 323 changer transitions 0/874 dead transitions. [2024-11-19 13:48:37,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 874 transitions, 11268 flow [2024-11-19 13:48:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-19 13:48:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-19 13:48:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1143 transitions. [2024-11-19 13:48:37,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49609375 [2024-11-19 13:48:37,127 INFO L175 Difference]: Start difference. First operand has 208 places, 279 transitions, 5132 flow. Second operand 48 states and 1143 transitions. [2024-11-19 13:48:37,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 874 transitions, 11268 flow [2024-11-19 13:48:37,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 874 transitions, 10711 flow, removed 265 selfloop flow, removed 6 redundant places. [2024-11-19 13:48:37,760 INFO L231 Difference]: Finished difference. Result has 261 places, 385 transitions, 7620 flow [2024-11-19 13:48:37,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4750, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7620, PETRI_PLACES=261, PETRI_TRANSITIONS=385} [2024-11-19 13:48:37,761 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 215 predicate places. [2024-11-19 13:48:37,761 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 385 transitions, 7620 flow [2024-11-19 13:48:37,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 17.135135135135137) internal successors, (634), 37 states have internal predecessors, (634), 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 13:48:37,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:37,762 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:37,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:37,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:37,967 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:37,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1363732264, now seen corresponding path program 1 times [2024-11-19 13:48:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807077459] [2024-11-19 13:48:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 13:48:38,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:38,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807077459] [2024-11-19 13:48:38,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807077459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:38,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864300609] [2024-11-19 13:48:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:38,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:38,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:38,522 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:38,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 13:48:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:38,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 13:48:38,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-19 13:48:38,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-19 13:48:39,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864300609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:39,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:39,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2024-11-19 13:48:39,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770731280] [2024-11-19 13:48:39,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:39,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 13:48:39,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:39,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 13:48:39,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-11-19 13:48:39,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:39,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 385 transitions, 7620 flow. Second operand has 26 states, 26 states have (on average 17.692307692307693) internal successors, (460), 26 states have internal predecessors, (460), 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 13:48:39,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:39,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:39,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:50,296 INFO L124 PetriNetUnfolderBase]: 24095/49397 cut-off events. [2024-11-19 13:48:50,297 INFO L125 PetriNetUnfolderBase]: For 462110/462110 co-relation queries the response was YES. [2024-11-19 13:48:51,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192772 conditions, 49397 events. 24095/49397 cut-off events. For 462110/462110 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 409331 event pairs, 3127 based on Foata normal form. 324/49716 useless extension candidates. Maximal degree in co-relation 185504. Up to 10645 conditions per place. [2024-11-19 13:48:51,329 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 441 selfloop transitions, 604 changer transitions 0/1054 dead transitions. [2024-11-19 13:48:51,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 1054 transitions, 19435 flow [2024-11-19 13:48:51,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 13:48:51,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-19 13:48:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 651 transitions. [2024-11-19 13:48:51,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-11-19 13:48:51,331 INFO L175 Difference]: Start difference. First operand has 261 places, 385 transitions, 7620 flow. Second operand 27 states and 651 transitions. [2024-11-19 13:48:51,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 1054 transitions, 19435 flow [2024-11-19 13:48:53,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1054 transitions, 18673 flow, removed 323 selfloop flow, removed 10 redundant places. [2024-11-19 13:48:53,711 INFO L231 Difference]: Finished difference. Result has 290 places, 784 transitions, 17288 flow [2024-11-19 13:48:53,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7292, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17288, PETRI_PLACES=290, PETRI_TRANSITIONS=784} [2024-11-19 13:48:53,712 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 244 predicate places. [2024-11-19 13:48:53,712 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 784 transitions, 17288 flow [2024-11-19 13:48:53,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.692307692307693) internal successors, (460), 26 states have internal predecessors, (460), 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 13:48:53,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:53,713 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:53,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 13:48:53,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:53,914 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:53,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:53,914 INFO L85 PathProgramCache]: Analyzing trace with hash -221817802, now seen corresponding path program 6 times [2024-11-19 13:48:53,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:53,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708436464] [2024-11-19 13:48:53,914 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 13:48:53,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:54,255 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-19 13:48:54,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:55,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708436464] [2024-11-19 13:48:55,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708436464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:55,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809421881] [2024-11-19 13:48:55,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 13:48:55,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:55,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:55,276 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:55,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 13:48:56,169 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-19 13:48:56,170 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:56,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 13:48:56,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:56,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:56,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809421881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:56,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:56,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 44 [2024-11-19 13:48:56,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164845822] [2024-11-19 13:48:56,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:56,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-19 13:48:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-19 13:48:56,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 13:48:56,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:56,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 784 transitions, 17288 flow. Second operand has 46 states, 46 states have (on average 17.043478260869566) internal successors, (784), 46 states have internal predecessors, (784), 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 13:48:56,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:56,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:56,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand