./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:50:01,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:50:01,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:50:01,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:50:01,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:50:01,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:50:01,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:50:01,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:50:01,812 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:50:01,813 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:50:01,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:50:01,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:50:01,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:50:01,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:50:01,816 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:50:01,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:50:01,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:50:01,817 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:50:01,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:50:01,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:50:01,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:50:01,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:50:01,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:50:01,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:50:01,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:50:01,823 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:50:01,823 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:50:01,823 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:50:01,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:50:01,824 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:50:01,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:50:01,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:50:01,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:50:01,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:50:01,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:50:01,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:50:01,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:50:01,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:50:01,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:50:01,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:50:01,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:50:01,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:50:01,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:50:01,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:50:01,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d [2024-10-13 16:50:02,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:50:02,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:50:02,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:50:02,160 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:50:02,161 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:50:02,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-10-13 16:50:03,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:50:03,736 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:50:03,737 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-10-13 16:50:03,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07f0b23c/5eef5d139c7648f290eceee86143018e/FLAGd822efaac [2024-10-13 16:50:04,088 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07f0b23c/5eef5d139c7648f290eceee86143018e [2024-10-13 16:50:04,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:50:04,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:50:04,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:50:04,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:50:04,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:50:04,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b3e379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04, skipping insertion in model container [2024-10-13 16:50:04,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,133 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:50:04,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:50:04,355 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:50:04,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:50:04,403 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:50:04,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04 WrapperNode [2024-10-13 16:50:04,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:50:04,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:50:04,405 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:50:04,405 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:50:04,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,468 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 267 [2024-10-13 16:50:04,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:50:04,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:50:04,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:50:04,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:50:04,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,519 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 16:50:04,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:50:04,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:50:04,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:50:04,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:50:04,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (1/1) ... [2024-10-13 16:50:04,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:50:04,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:04,582 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) [2024-10-13 16:50:04,584 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 [2024-10-13 16:50:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:50:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:50:04,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:50:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:50:04,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:50:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:50:04,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:50:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:50:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:50:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:50:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:50:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:50:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:50:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:50:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:50:04,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:50:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:50:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:50:04,632 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:50:04,734 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:50:04,737 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:50:05,177 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:50:05,177 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:50:05,477 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:50:05,477 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-13 16:50:05,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:50:05 BoogieIcfgContainer [2024-10-13 16:50:05,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:50:05,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:50:05,480 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:50:05,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:50:05,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:50:04" (1/3) ... [2024-10-13 16:50:05,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ef31ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:50:05, skipping insertion in model container [2024-10-13 16:50:05,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:50:04" (2/3) ... [2024-10-13 16:50:05,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ef31ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:50:05, skipping insertion in model container [2024-10-13 16:50:05,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:50:05" (3/3) ... [2024-10-13 16:50:05,486 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2024-10-13 16:50:05,503 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:50:05,503 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-10-13 16:50:05,503 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:50:05,567 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:50:05,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 79 transitions, 179 flow [2024-10-13 16:50:05,643 INFO L124 PetriNetUnfolderBase]: 7/76 cut-off events. [2024-10-13 16:50:05,644 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:50:05,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 7/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 220 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-10-13 16:50:05,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 79 transitions, 179 flow [2024-10-13 16:50:05,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 75 transitions, 168 flow [2024-10-13 16:50:05,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:50:05,667 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;@3a7fa4cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:50:05,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-10-13 16:50:05,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:50:05,672 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:50:05,672 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:50:05,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:05,673 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:50:05,673 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:05,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:05,681 INFO L85 PathProgramCache]: Analyzing trace with hash 812992, now seen corresponding path program 1 times [2024-10-13 16:50:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:05,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688429061] [2024-10-13 16:50:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:05,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:05,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688429061] [2024-10-13 16:50:06,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688429061] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:06,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:06,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:50:06,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165287594] [2024-10-13 16:50:06,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:06,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:50:06,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:06,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:50:06,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:50:06,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-13 16:50:06,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-10-13 16:50:06,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:06,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-13 16:50:06,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:06,785 INFO L124 PetriNetUnfolderBase]: 2722/4569 cut-off events. [2024-10-13 16:50:06,786 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-10-13 16:50:06,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8613 conditions, 4569 events. 2722/4569 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29882 event pairs, 2432 based on Foata normal form. 291/3432 useless extension candidates. Maximal degree in co-relation 8140. Up to 3790 conditions per place. [2024-10-13 16:50:06,829 INFO L140 encePairwiseOnDemand]: 61/79 looper letters, 41 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-10-13 16:50:06,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 262 flow [2024-10-13 16:50:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:50:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:50:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2024-10-13 16:50:06,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5537974683544303 [2024-10-13 16:50:06,845 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 168 flow. Second operand 4 states and 175 transitions. [2024-10-13 16:50:06,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 262 flow [2024-10-13 16:50:06,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 16:50:06,865 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 202 flow [2024-10-13 16:50:06,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-10-13 16:50:06,872 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-10-13 16:50:06,872 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 202 flow [2024-10-13 16:50:06,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-10-13 16:50:06,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:06,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:50:06,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:50:06,875 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:06,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:06,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1549173020, now seen corresponding path program 1 times [2024-10-13 16:50:06,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:06,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920723974] [2024-10-13 16:50:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:06,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:07,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920723974] [2024-10-13 16:50:07,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920723974] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401729865] [2024-10-13 16:50:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:07,075 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) [2024-10-13 16:50:07,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:50:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:07,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:50:07,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:07,206 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:50:07,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401729865] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:07,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:50:07,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:50:07,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592069058] [2024-10-13 16:50:07,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:07,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:50:07,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:07,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:50:07,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:50:07,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-13 16:50:07,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-10-13 16:50:07,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:07,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-13 16:50:07,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:07,745 INFO L124 PetriNetUnfolderBase]: 2722/4567 cut-off events. [2024-10-13 16:50:07,745 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-10-13 16:50:07,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 4567 events. 2722/4567 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29890 event pairs, 2432 based on Foata normal form. 2/3144 useless extension candidates. Maximal degree in co-relation 8425. Up to 3780 conditions per place. [2024-10-13 16:50:07,807 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 34 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-10-13 16:50:07,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 286 flow [2024-10-13 16:50:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:50:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:50:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-10-13 16:50:07,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46835443037974683 [2024-10-13 16:50:07,813 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 202 flow. Second operand 6 states and 222 transitions. [2024-10-13 16:50:07,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 286 flow [2024-10-13 16:50:07,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:50:07,817 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 218 flow [2024-10-13 16:50:07,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2024-10-13 16:50:07,819 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-13 16:50:07,820 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 218 flow [2024-10-13 16:50:07,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-10-13 16:50:07,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:07,821 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:50:07,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:50:08,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:08,022 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:08,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:08,023 INFO L85 PathProgramCache]: Analyzing trace with hash -779722574, now seen corresponding path program 1 times [2024-10-13 16:50:08,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:08,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326312267] [2024-10-13 16:50:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:08,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:08,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:08,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326312267] [2024-10-13 16:50:08,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326312267] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:08,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081528541] [2024-10-13 16:50:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:08,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:08,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:08,117 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) [2024-10-13 16:50:08,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:50:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:08,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:50:08,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:08,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:08,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081528541] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:08,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:08,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:50:08,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322464006] [2024-10-13 16:50:08,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:08,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:50:08,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:08,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:50:08,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:50:08,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-13 16:50:08,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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) [2024-10-13 16:50:08,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:08,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-13 16:50:08,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:08,874 INFO L124 PetriNetUnfolderBase]: 2728/4591 cut-off events. [2024-10-13 16:50:08,875 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-13 16:50:08,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8569 conditions, 4591 events. 2728/4591 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 30116 event pairs, 2432 based on Foata normal form. 6/3171 useless extension candidates. Maximal degree in co-relation 8427. Up to 3791 conditions per place. [2024-10-13 16:50:08,912 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 39 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-10-13 16:50:08,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 90 transitions, 460 flow [2024-10-13 16:50:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:50:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:50:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 360 transitions. [2024-10-13 16:50:08,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45569620253164556 [2024-10-13 16:50:08,915 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 218 flow. Second operand 10 states and 360 transitions. [2024-10-13 16:50:08,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 90 transitions, 460 flow [2024-10-13 16:50:08,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 402 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-13 16:50:08,920 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 358 flow [2024-10-13 16:50:08,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-10-13 16:50:08,922 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-13 16:50:08,923 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 358 flow [2024-10-13 16:50:08,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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) [2024-10-13 16:50:08,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:08,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:08,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:09,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-13 16:50:09,129 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:09,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:09,129 INFO L85 PathProgramCache]: Analyzing trace with hash -698766873, now seen corresponding path program 1 times [2024-10-13 16:50:09,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:09,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582958080] [2024-10-13 16:50:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:09,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:09,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:09,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582958080] [2024-10-13 16:50:09,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582958080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:09,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:09,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:50:09,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053062037] [2024-10-13 16:50:09,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:09,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:50:09,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:09,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:50:09,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:50:09,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-13 16:50:09,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-10-13 16:50:09,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:09,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-13 16:50:09,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:09,848 INFO L124 PetriNetUnfolderBase]: 2865/4869 cut-off events. [2024-10-13 16:50:09,848 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-10-13 16:50:09,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 4869 events. 2865/4869 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 31926 event pairs, 2559 based on Foata normal form. 98/3605 useless extension candidates. Maximal degree in co-relation 9041. Up to 3806 conditions per place. [2024-10-13 16:50:09,881 INFO L140 encePairwiseOnDemand]: 68/79 looper letters, 85 selfloop transitions, 5 changer transitions 1/119 dead transitions. [2024-10-13 16:50:09,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 674 flow [2024-10-13 16:50:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:50:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:50:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-10-13 16:50:09,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5873417721518988 [2024-10-13 16:50:09,884 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 358 flow. Second operand 5 states and 232 transitions. [2024-10-13 16:50:09,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 674 flow [2024-10-13 16:50:09,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 119 transitions, 640 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:09,890 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 377 flow [2024-10-13 16:50:09,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2024-10-13 16:50:09,892 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-13 16:50:09,892 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 377 flow [2024-10-13 16:50:09,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-10-13 16:50:09,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:09,893 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:09,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:50:09,893 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:09,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1450275061, now seen corresponding path program 1 times [2024-10-13 16:50:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:09,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607995767] [2024-10-13 16:50:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:10,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:10,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607995767] [2024-10-13 16:50:10,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607995767] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:10,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485485740] [2024-10-13 16:50:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:10,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:10,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:10,084 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) [2024-10-13 16:50:10,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:50:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:10,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:50:10,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:10,223 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:50:10,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485485740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:10,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:50:10,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-13 16:50:10,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421185856] [2024-10-13 16:50:10,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:10,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:50:10,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:50:10,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:50:10,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-13 16:50:10,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-13 16:50:10,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:10,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-13 16:50:10,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:10,540 INFO L124 PetriNetUnfolderBase]: 1998/3413 cut-off events. [2024-10-13 16:50:10,540 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2024-10-13 16:50:10,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6801 conditions, 3413 events. 1998/3413 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 20788 event pairs, 1754 based on Foata normal form. 0/2716 useless extension candidates. Maximal degree in co-relation 6706. Up to 2847 conditions per place. [2024-10-13 16:50:10,556 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 60 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2024-10-13 16:50:10,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 487 flow [2024-10-13 16:50:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:50:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:50:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-10-13 16:50:10,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5780590717299579 [2024-10-13 16:50:10,558 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 377 flow. Second operand 3 states and 137 transitions. [2024-10-13 16:50:10,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 487 flow [2024-10-13 16:50:10,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 483 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 16:50:10,561 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 363 flow [2024-10-13 16:50:10,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2024-10-13 16:50:10,562 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2024-10-13 16:50:10,562 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 363 flow [2024-10-13 16:50:10,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-10-13 16:50:10,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:10,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:10,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:50:10,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:10,767 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:10,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash 971362461, now seen corresponding path program 1 times [2024-10-13 16:50:10,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:10,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282205469] [2024-10-13 16:50:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:10,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282205469] [2024-10-13 16:50:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282205469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:10,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:10,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:50:10,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997994486] [2024-10-13 16:50:10,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:10,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:50:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:50:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:50:10,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-13 16:50:10,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-13 16:50:10,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:10,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-13 16:50:10,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:11,160 INFO L124 PetriNetUnfolderBase]: 2002/3445 cut-off events. [2024-10-13 16:50:11,160 INFO L125 PetriNetUnfolderBase]: For 519/519 co-relation queries the response was YES. [2024-10-13 16:50:11,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 3445 events. 2002/3445 cut-off events. For 519/519 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19989 event pairs, 750 based on Foata normal form. 72/2808 useless extension candidates. Maximal degree in co-relation 6948. Up to 2102 conditions per place. [2024-10-13 16:50:11,175 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 74 selfloop transitions, 2 changer transitions 1/105 dead transitions. [2024-10-13 16:50:11,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 557 flow [2024-10-13 16:50:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:50:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:50:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-10-13 16:50:11,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6413502109704642 [2024-10-13 16:50:11,177 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 363 flow. Second operand 3 states and 152 transitions. [2024-10-13 16:50:11,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 557 flow [2024-10-13 16:50:11,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 546 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:11,180 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 358 flow [2024-10-13 16:50:11,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-10-13 16:50:11,181 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-10-13 16:50:11,181 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 358 flow [2024-10-13 16:50:11,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2024-10-13 16:50:11,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:11,182 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:11,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:50:11,182 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:11,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2144902098, now seen corresponding path program 1 times [2024-10-13 16:50:11,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:11,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107276827] [2024-10-13 16:50:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:11,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:11,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:11,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107276827] [2024-10-13 16:50:11,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107276827] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:11,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:11,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:50:11,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004104858] [2024-10-13 16:50:11,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:11,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:50:11,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:11,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:50:11,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:50:11,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-10-13 16:50:11,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2024-10-13 16:50:11,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:11,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-10-13 16:50:11,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:12,020 INFO L124 PetriNetUnfolderBase]: 4006/6941 cut-off events. [2024-10-13 16:50:12,020 INFO L125 PetriNetUnfolderBase]: For 1082/1085 co-relation queries the response was YES. [2024-10-13 16:50:12,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14207 conditions, 6941 events. 4006/6941 cut-off events. For 1082/1085 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 45693 event pairs, 2542 based on Foata normal form. 136/5905 useless extension candidates. Maximal degree in co-relation 14190. Up to 4305 conditions per place. [2024-10-13 16:50:12,072 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 102 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-13 16:50:12,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 131 transitions, 682 flow [2024-10-13 16:50:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:50:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:50:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-10-13 16:50:12,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329113924050633 [2024-10-13 16:50:12,074 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 358 flow. Second operand 4 states and 200 transitions. [2024-10-13 16:50:12,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 131 transitions, 682 flow [2024-10-13 16:50:12,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:50:12,078 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 385 flow [2024-10-13 16:50:12,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2024-10-13 16:50:12,079 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2024-10-13 16:50:12,079 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 385 flow [2024-10-13 16:50:12,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2024-10-13 16:50:12,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:12,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:12,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:50:12,080 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:12,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:12,081 INFO L85 PathProgramCache]: Analyzing trace with hash 269952940, now seen corresponding path program 1 times [2024-10-13 16:50:12,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:12,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22198989] [2024-10-13 16:50:12,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:12,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22198989] [2024-10-13 16:50:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22198989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:12,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:12,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:50:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769702671] [2024-10-13 16:50:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:12,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:50:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:50:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:50:12,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-13 16:50:12,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-10-13 16:50:12,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:12,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-13 16:50:12,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:12,484 INFO L124 PetriNetUnfolderBase]: 2114/3830 cut-off events. [2024-10-13 16:50:12,484 INFO L125 PetriNetUnfolderBase]: For 1149/1476 co-relation queries the response was YES. [2024-10-13 16:50:12,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8507 conditions, 3830 events. 2114/3830 cut-off events. For 1149/1476 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23744 event pairs, 948 based on Foata normal form. 131/3336 useless extension candidates. Maximal degree in co-relation 8488. Up to 2794 conditions per place. [2024-10-13 16:50:12,511 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 69 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-10-13 16:50:12,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 553 flow [2024-10-13 16:50:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:50:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:50:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-10-13 16:50:12,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6118143459915611 [2024-10-13 16:50:12,513 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 385 flow. Second operand 3 states and 145 transitions. [2024-10-13 16:50:12,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 553 flow [2024-10-13 16:50:12,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:50:12,517 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 405 flow [2024-10-13 16:50:12,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2024-10-13 16:50:12,519 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 14 predicate places. [2024-10-13 16:50:12,520 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 405 flow [2024-10-13 16:50:12,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-10-13 16:50:12,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:12,520 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:50:12,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:50:12,522 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:12,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash -54126506, now seen corresponding path program 2 times [2024-10-13 16:50:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:12,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709608197] [2024-10-13 16:50:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:12,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:12,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:12,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709608197] [2024-10-13 16:50:12,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709608197] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:12,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885356464] [2024-10-13 16:50:12,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:50:12,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:12,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:12,658 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) [2024-10-13 16:50:12,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:50:12,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:50:12,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:12,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:50:12,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:50:12,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:50:12,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885356464] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:12,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:12,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:50:12,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058065919] [2024-10-13 16:50:12,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:12,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:50:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:12,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:50:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:50:12,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-13 16:50:12,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 405 flow. Second operand has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 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) [2024-10-13 16:50:12,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:12,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-13 16:50:12,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:13,471 INFO L124 PetriNetUnfolderBase]: 2117/3773 cut-off events. [2024-10-13 16:50:13,471 INFO L125 PetriNetUnfolderBase]: For 1975/2369 co-relation queries the response was YES. [2024-10-13 16:50:13,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8699 conditions, 3773 events. 2117/3773 cut-off events. For 1975/2369 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23052 event pairs, 1648 based on Foata normal form. 137/3284 useless extension candidates. Maximal degree in co-relation 8678. Up to 2983 conditions per place. [2024-10-13 16:50:13,497 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 33 selfloop transitions, 36 changer transitions 2/98 dead transitions. [2024-10-13 16:50:13,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 565 flow [2024-10-13 16:50:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:50:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:50:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 475 transitions. [2024-10-13 16:50:13,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4294755877034358 [2024-10-13 16:50:13,500 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 405 flow. Second operand 14 states and 475 transitions. [2024-10-13 16:50:13,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 565 flow [2024-10-13 16:50:13,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 531 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-13 16:50:13,505 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 447 flow [2024-10-13 16:50:13,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=447, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-10-13 16:50:13,507 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-10-13 16:50:13,507 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 447 flow [2024-10-13 16:50:13,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 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) [2024-10-13 16:50:13,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:13,507 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:13,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:50:13,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:13,708 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:13,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:13,708 INFO L85 PathProgramCache]: Analyzing trace with hash 485629164, now seen corresponding path program 1 times [2024-10-13 16:50:13,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:13,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082405560] [2024-10-13 16:50:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:13,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:13,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082405560] [2024-10-13 16:50:13,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082405560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:13,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:13,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:50:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061715757] [2024-10-13 16:50:13,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:13,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:50:13,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:13,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:50:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:50:13,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-13 16:50:13,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-13 16:50:13,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:13,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-13 16:50:13,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:14,209 INFO L124 PetriNetUnfolderBase]: 2338/4132 cut-off events. [2024-10-13 16:50:14,210 INFO L125 PetriNetUnfolderBase]: For 1377/1817 co-relation queries the response was YES. [2024-10-13 16:50:14,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9176 conditions, 4132 events. 2338/4132 cut-off events. For 1377/1817 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 25273 event pairs, 1835 based on Foata normal form. 224/3724 useless extension candidates. Maximal degree in co-relation 9158. Up to 2899 conditions per place. [2024-10-13 16:50:14,235 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 74 selfloop transitions, 9 changer transitions 6/116 dead transitions. [2024-10-13 16:50:14,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 116 transitions, 693 flow [2024-10-13 16:50:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:50:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:50:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-10-13 16:50:14,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.569620253164557 [2024-10-13 16:50:14,237 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 447 flow. Second operand 5 states and 225 transitions. [2024-10-13 16:50:14,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 116 transitions, 693 flow [2024-10-13 16:50:14,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 550 flow, removed 16 selfloop flow, removed 14 redundant places. [2024-10-13 16:50:14,242 INFO L231 Difference]: Finished difference. Result has 87 places, 96 transitions, 341 flow [2024-10-13 16:50:14,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=87, PETRI_TRANSITIONS=96} [2024-10-13 16:50:14,243 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-13 16:50:14,243 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 96 transitions, 341 flow [2024-10-13 16:50:14,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-13 16:50:14,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:14,243 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:14,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:50:14,244 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:14,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1532008515, now seen corresponding path program 1 times [2024-10-13 16:50:14,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:14,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877583900] [2024-10-13 16:50:14,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:14,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:14,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:14,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877583900] [2024-10-13 16:50:14,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877583900] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:14,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305863581] [2024-10-13 16:50:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:14,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:14,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:14,364 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) [2024-10-13 16:50:14,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:50:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:14,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 16:50:14,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:14,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:14,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305863581] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:14,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:14,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-13 16:50:14,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338584629] [2024-10-13 16:50:14,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:14,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:50:14,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:14,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:50:14,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:50:14,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-13 16:50:14,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 96 transitions, 341 flow. Second operand has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 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) [2024-10-13 16:50:14,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:14,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-13 16:50:14,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:15,473 INFO L124 PetriNetUnfolderBase]: 4014/7384 cut-off events. [2024-10-13 16:50:15,473 INFO L125 PetriNetUnfolderBase]: For 2362/2920 co-relation queries the response was YES. [2024-10-13 16:50:15,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16648 conditions, 7384 events. 4014/7384 cut-off events. For 2362/2920 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 52327 event pairs, 2633 based on Foata normal form. 580/6808 useless extension candidates. Maximal degree in co-relation 16632. Up to 3346 conditions per place. [2024-10-13 16:50:15,511 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 85 selfloop transitions, 38 changer transitions 1/151 dead transitions. [2024-10-13 16:50:15,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 151 transitions, 772 flow [2024-10-13 16:50:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:50:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:50:15,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 344 transitions. [2024-10-13 16:50:15,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4838255977496484 [2024-10-13 16:50:15,514 INFO L175 Difference]: Start difference. First operand has 87 places, 96 transitions, 341 flow. Second operand 9 states and 344 transitions. [2024-10-13 16:50:15,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 151 transitions, 772 flow [2024-10-13 16:50:15,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 151 transitions, 767 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:15,519 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 531 flow [2024-10-13 16:50:15,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=531, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-10-13 16:50:15,520 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 19 predicate places. [2024-10-13 16:50:15,520 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 531 flow [2024-10-13 16:50:15,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 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) [2024-10-13 16:50:15,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:15,520 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:15,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:15,721 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,SelfDestructingSolverStorable10 [2024-10-13 16:50:15,721 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:15,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:15,722 INFO L85 PathProgramCache]: Analyzing trace with hash 973320858, now seen corresponding path program 1 times [2024-10-13 16:50:15,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:15,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545853540] [2024-10-13 16:50:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:15,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545853540] [2024-10-13 16:50:15,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545853540] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:15,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78153989] [2024-10-13 16:50:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:15,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:15,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:15,857 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) [2024-10-13 16:50:15,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:50:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:15,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:50:15,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:50:15,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:50:15,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78153989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:15,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:50:15,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 16:50:15,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329089951] [2024-10-13 16:50:15,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:15,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:50:15,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:15,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:50:15,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:50:15,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-13 16:50:15,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-10-13 16:50:15,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:15,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-13 16:50:15,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:16,379 INFO L124 PetriNetUnfolderBase]: 2984/5626 cut-off events. [2024-10-13 16:50:16,379 INFO L125 PetriNetUnfolderBase]: For 2498/2941 co-relation queries the response was YES. [2024-10-13 16:50:16,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12790 conditions, 5626 events. 2984/5626 cut-off events. For 2498/2941 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 39494 event pairs, 2436 based on Foata normal form. 213/5161 useless extension candidates. Maximal degree in co-relation 12770. Up to 4367 conditions per place. [2024-10-13 16:50:16,408 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 80 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2024-10-13 16:50:16,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 108 transitions, 685 flow [2024-10-13 16:50:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:50:16,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:50:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-10-13 16:50:16,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5654008438818565 [2024-10-13 16:50:16,410 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 531 flow. Second operand 3 states and 134 transitions. [2024-10-13 16:50:16,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 108 transitions, 685 flow [2024-10-13 16:50:16,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 108 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:50:16,418 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 523 flow [2024-10-13 16:50:16,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=523, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2024-10-13 16:50:16,419 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2024-10-13 16:50:16,421 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 523 flow [2024-10-13 16:50:16,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-10-13 16:50:16,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:16,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:16,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 16:50:16,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:16,627 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:16,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash 973090215, now seen corresponding path program 1 times [2024-10-13 16:50:16,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:16,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783815782] [2024-10-13 16:50:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:16,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:17,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783815782] [2024-10-13 16:50:17,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783815782] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021335921] [2024-10-13 16:50:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:17,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:17,186 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) [2024-10-13 16:50:17,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:50:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:17,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-13 16:50:17,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:17,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:50:17,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:50:17,439 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:50:17,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:50:17,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-13 16:50:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:17,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:18,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:18,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-10-13 16:50:18,254 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 16:50:18,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2024-10-13 16:50:18,269 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-13 16:50:18,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2024-10-13 16:50:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:18,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021335921] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:18,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:18,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-10-13 16:50:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647285712] [2024-10-13 16:50:18,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:18,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-13 16:50:18,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:18,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-13 16:50:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=380, Unknown=1, NotChecked=0, Total=462 [2024-10-13 16:50:18,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-10-13 16:50:18,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 523 flow. Second operand has 22 states, 22 states have (on average 24.454545454545453) internal successors, (538), 22 states have internal predecessors, (538), 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) [2024-10-13 16:50:18,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:18,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-10-13 16:50:18,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:20,555 INFO L124 PetriNetUnfolderBase]: 4053/7003 cut-off events. [2024-10-13 16:50:20,556 INFO L125 PetriNetUnfolderBase]: For 3051/3683 co-relation queries the response was YES. [2024-10-13 16:50:20,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16231 conditions, 7003 events. 4053/7003 cut-off events. For 3051/3683 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 46366 event pairs, 1268 based on Foata normal form. 329/6447 useless extension candidates. Maximal degree in co-relation 16210. Up to 1833 conditions per place. [2024-10-13 16:50:20,586 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 179 selfloop transitions, 51 changer transitions 1/251 dead transitions. [2024-10-13 16:50:20,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 251 transitions, 1413 flow [2024-10-13 16:50:20,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 16:50:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 16:50:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 658 transitions. [2024-10-13 16:50:20,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39662447257383965 [2024-10-13 16:50:20,589 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 523 flow. Second operand 21 states and 658 transitions. [2024-10-13 16:50:20,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 251 transitions, 1413 flow [2024-10-13 16:50:20,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 251 transitions, 1412 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:50:20,597 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 787 flow [2024-10-13 16:50:20,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=787, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2024-10-13 16:50:20,598 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2024-10-13 16:50:20,598 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 787 flow [2024-10-13 16:50:20,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.454545454545453) internal successors, (538), 22 states have internal predecessors, (538), 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) [2024-10-13 16:50:20,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:20,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:20,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 16:50:20,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:20,803 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:20,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:20,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1332250512, now seen corresponding path program 1 times [2024-10-13 16:50:20,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:20,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829720981] [2024-10-13 16:50:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:20,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829720981] [2024-10-13 16:50:21,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829720981] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:21,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109800361] [2024-10-13 16:50:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:21,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:21,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:21,142 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) [2024-10-13 16:50:21,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:50:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:21,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-13 16:50:21,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:21,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:50:21,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:50:21,337 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:50:21,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:50:21,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-13 16:50:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:21,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:21,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:21,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-10-13 16:50:21,959 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 16:50:21,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 49 [2024-10-13 16:50:21,969 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-13 16:50:21,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2024-10-13 16:50:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:22,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109800361] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:22,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:22,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-10-13 16:50:22,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103426204] [2024-10-13 16:50:22,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:22,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-13 16:50:22,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:22,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-13 16:50:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=368, Unknown=3, NotChecked=0, Total=462 [2024-10-13 16:50:22,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-10-13 16:50:22,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 787 flow. Second operand has 22 states, 22 states have (on average 24.318181818181817) internal successors, (535), 22 states have internal predecessors, (535), 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) [2024-10-13 16:50:22,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:22,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-10-13 16:50:22,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:26,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 16:50:28,018 INFO L124 PetriNetUnfolderBase]: 4497/7743 cut-off events. [2024-10-13 16:50:28,018 INFO L125 PetriNetUnfolderBase]: For 6723/7375 co-relation queries the response was YES. [2024-10-13 16:50:28,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20216 conditions, 7743 events. 4497/7743 cut-off events. For 6723/7375 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 51582 event pairs, 1242 based on Foata normal form. 362/7529 useless extension candidates. Maximal degree in co-relation 20187. Up to 1804 conditions per place. [2024-10-13 16:50:28,049 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 196 selfloop transitions, 59 changer transitions 2/277 dead transitions. [2024-10-13 16:50:28,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 277 transitions, 1791 flow [2024-10-13 16:50:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 16:50:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 16:50:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 700 transitions. [2024-10-13 16:50:28,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40276179516685845 [2024-10-13 16:50:28,052 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 787 flow. Second operand 22 states and 700 transitions. [2024-10-13 16:50:28,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 277 transitions, 1791 flow [2024-10-13 16:50:28,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 277 transitions, 1772 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-13 16:50:28,073 INFO L231 Difference]: Finished difference. Result has 147 places, 139 transitions, 1064 flow [2024-10-13 16:50:28,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1064, PETRI_PLACES=147, PETRI_TRANSITIONS=139} [2024-10-13 16:50:28,074 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 69 predicate places. [2024-10-13 16:50:28,074 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 139 transitions, 1064 flow [2024-10-13 16:50:28,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.318181818181817) internal successors, (535), 22 states have internal predecessors, (535), 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) [2024-10-13 16:50:28,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:28,075 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] [2024-10-13 16:50:28,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:28,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 16:50:28,278 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:28,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash 101026568, now seen corresponding path program 1 times [2024-10-13 16:50:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:28,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472320126] [2024-10-13 16:50:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:28,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:50:28,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:28,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472320126] [2024-10-13 16:50:28,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472320126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:28,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:50:28,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:50:28,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913311229] [2024-10-13 16:50:28,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:28,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:50:28,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:28,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:50:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:50:28,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-10-13 16:50:28,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 139 transitions, 1064 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2024-10-13 16:50:28,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:28,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-10-13 16:50:28,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:28,937 INFO L124 PetriNetUnfolderBase]: 4101/7032 cut-off events. [2024-10-13 16:50:28,937 INFO L125 PetriNetUnfolderBase]: For 10645/11314 co-relation queries the response was YES. [2024-10-13 16:50:28,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20403 conditions, 7032 events. 4101/7032 cut-off events. For 10645/11314 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 46615 event pairs, 1397 based on Foata normal form. 409/7069 useless extension candidates. Maximal degree in co-relation 20366. Up to 2700 conditions per place. [2024-10-13 16:50:28,975 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 135 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2024-10-13 16:50:28,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 168 transitions, 1460 flow [2024-10-13 16:50:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:50:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:50:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-10-13 16:50:28,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5886075949367089 [2024-10-13 16:50:28,977 INFO L175 Difference]: Start difference. First operand has 147 places, 139 transitions, 1064 flow. Second operand 4 states and 186 transitions. [2024-10-13 16:50:28,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 168 transitions, 1460 flow [2024-10-13 16:50:29,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 168 transitions, 1375 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-10-13 16:50:29,016 INFO L231 Difference]: Finished difference. Result has 141 places, 141 transitions, 1030 flow [2024-10-13 16:50:29,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1030, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2024-10-13 16:50:29,017 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 63 predicate places. [2024-10-13 16:50:29,017 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 1030 flow [2024-10-13 16:50:29,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2024-10-13 16:50:29,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:29,017 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:29,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 16:50:29,018 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:29,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:29,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1963773983, now seen corresponding path program 2 times [2024-10-13 16:50:29,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:29,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803258121] [2024-10-13 16:50:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:29,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:50:29,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:29,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803258121] [2024-10-13 16:50:29,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803258121] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:29,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367904540] [2024-10-13 16:50:29,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:50:29,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:29,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:29,097 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) [2024-10-13 16:50:29,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:50:29,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:50:29,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:29,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:50:29,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:50:29,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:50:29,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367904540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:29,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:50:29,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 16:50:29,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361637969] [2024-10-13 16:50:29,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:29,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:50:29,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:50:29,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:50:29,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-13 16:50:29,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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) [2024-10-13 16:50:29,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:29,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-13 16:50:29,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:30,063 INFO L124 PetriNetUnfolderBase]: 5207/8990 cut-off events. [2024-10-13 16:50:30,063 INFO L125 PetriNetUnfolderBase]: For 17244/17282 co-relation queries the response was YES. [2024-10-13 16:50:30,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27283 conditions, 8990 events. 5207/8990 cut-off events. For 17244/17282 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 60847 event pairs, 1721 based on Foata normal form. 176/8808 useless extension candidates. Maximal degree in co-relation 27246. Up to 2923 conditions per place. [2024-10-13 16:50:30,126 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 159 selfloop transitions, 7 changer transitions 0/190 dead transitions. [2024-10-13 16:50:30,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 190 transitions, 1696 flow [2024-10-13 16:50:30,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:50:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:50:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2024-10-13 16:50:30,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5854430379746836 [2024-10-13 16:50:30,128 INFO L175 Difference]: Start difference. First operand has 141 places, 141 transitions, 1030 flow. Second operand 4 states and 185 transitions. [2024-10-13 16:50:30,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 190 transitions, 1696 flow [2024-10-13 16:50:30,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 190 transitions, 1681 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:30,166 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 1033 flow [2024-10-13 16:50:30,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1033, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2024-10-13 16:50:30,167 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 63 predicate places. [2024-10-13 16:50:30,167 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 1033 flow [2024-10-13 16:50:30,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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) [2024-10-13 16:50:30,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:30,168 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:30,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 16:50:30,368 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,SelfDestructingSolverStorable15 [2024-10-13 16:50:30,368 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:30,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:30,369 INFO L85 PathProgramCache]: Analyzing trace with hash -747450461, now seen corresponding path program 1 times [2024-10-13 16:50:30,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:30,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714532427] [2024-10-13 16:50:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:30,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:50:30,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:30,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714532427] [2024-10-13 16:50:30,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714532427] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:30,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127815826] [2024-10-13 16:50:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:30,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:30,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:30,481 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) [2024-10-13 16:50:30,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:50:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:30,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:50:30,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:50:30,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:50:30,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127815826] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:30,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:30,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:50:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554181465] [2024-10-13 16:50:30,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:30,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:50:30,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:50:30,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:50:30,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-10-13 16:50:30,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 1033 flow. Second operand has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:30,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:30,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-10-13 16:50:30,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:32,339 INFO L124 PetriNetUnfolderBase]: 8150/14507 cut-off events. [2024-10-13 16:50:32,339 INFO L125 PetriNetUnfolderBase]: For 31122/31256 co-relation queries the response was YES. [2024-10-13 16:50:32,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45773 conditions, 14507 events. 8150/14507 cut-off events. For 31122/31256 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 104468 event pairs, 2521 based on Foata normal form. 528/14867 useless extension candidates. Maximal degree in co-relation 45737. Up to 5670 conditions per place. [2024-10-13 16:50:32,432 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 304 selfloop transitions, 13 changer transitions 0/342 dead transitions. [2024-10-13 16:50:32,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 342 transitions, 2969 flow [2024-10-13 16:50:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:50:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:50:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 482 transitions. [2024-10-13 16:50:32,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.610126582278481 [2024-10-13 16:50:32,434 INFO L175 Difference]: Start difference. First operand has 141 places, 140 transitions, 1033 flow. Second operand 10 states and 482 transitions. [2024-10-13 16:50:32,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 342 transitions, 2969 flow [2024-10-13 16:50:32,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 342 transitions, 2937 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:50:32,498 INFO L231 Difference]: Finished difference. Result has 150 places, 149 transitions, 1099 flow [2024-10-13 16:50:32,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1099, PETRI_PLACES=150, PETRI_TRANSITIONS=149} [2024-10-13 16:50:32,499 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 72 predicate places. [2024-10-13 16:50:32,499 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 149 transitions, 1099 flow [2024-10-13 16:50:32,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:32,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:32,500 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] [2024-10-13 16:50:32,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:32,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 16:50:32,704 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:32,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 663272358, now seen corresponding path program 1 times [2024-10-13 16:50:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:32,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743615736] [2024-10-13 16:50:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:32,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:33,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:33,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743615736] [2024-10-13 16:50:33,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743615736] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:33,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122503967] [2024-10-13 16:50:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:33,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:33,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:33,106 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) [2024-10-13 16:50:33,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:50:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:33,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 16:50:33,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:33,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:50:33,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:50:33,315 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:50:33,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:50:33,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-13 16:50:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:33,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:33,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:33,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-10-13 16:50:33,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:33,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 58 [2024-10-13 16:50:33,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:33,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2024-10-13 16:50:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:34,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122503967] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:34,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:34,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-10-13 16:50:34,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846424422] [2024-10-13 16:50:34,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:34,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-13 16:50:34,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:34,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-13 16:50:34,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=372, Unknown=2, NotChecked=0, Total=462 [2024-10-13 16:50:34,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-10-13 16:50:34,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 149 transitions, 1099 flow. Second operand has 22 states, 22 states have (on average 24.727272727272727) internal successors, (544), 22 states have internal predecessors, (544), 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) [2024-10-13 16:50:34,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:34,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-10-13 16:50:34,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:38,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 16:50:40,204 INFO L124 PetriNetUnfolderBase]: 9113/14741 cut-off events. [2024-10-13 16:50:40,204 INFO L125 PetriNetUnfolderBase]: For 27313/27996 co-relation queries the response was YES. [2024-10-13 16:50:40,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46219 conditions, 14741 events. 9113/14741 cut-off events. For 27313/27996 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 99304 event pairs, 5764 based on Foata normal form. 95/14301 useless extension candidates. Maximal degree in co-relation 46180. Up to 10556 conditions per place. [2024-10-13 16:50:40,309 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 195 selfloop transitions, 55 changer transitions 3/275 dead transitions. [2024-10-13 16:50:40,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 275 transitions, 2046 flow [2024-10-13 16:50:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 16:50:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 16:50:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 636 transitions. [2024-10-13 16:50:40,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40253164556962023 [2024-10-13 16:50:40,312 INFO L175 Difference]: Start difference. First operand has 150 places, 149 transitions, 1099 flow. Second operand 20 states and 636 transitions. [2024-10-13 16:50:40,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 275 transitions, 2046 flow [2024-10-13 16:50:40,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 275 transitions, 1980 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-10-13 16:50:40,360 INFO L231 Difference]: Finished difference. Result has 170 places, 152 transitions, 1218 flow [2024-10-13 16:50:40,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1218, PETRI_PLACES=170, PETRI_TRANSITIONS=152} [2024-10-13 16:50:40,361 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 92 predicate places. [2024-10-13 16:50:40,361 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 152 transitions, 1218 flow [2024-10-13 16:50:40,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.727272727272727) internal successors, (544), 22 states have internal predecessors, (544), 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) [2024-10-13 16:50:40,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:40,361 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:40,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:40,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 16:50:40,562 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:40,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1764954553, now seen corresponding path program 1 times [2024-10-13 16:50:40,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:40,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633949922] [2024-10-13 16:50:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:40,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:41,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:41,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633949922] [2024-10-13 16:50:41,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633949922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:41,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208825545] [2024-10-13 16:50:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:41,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:41,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:41,165 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) [2024-10-13 16:50:41,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 16:50:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:41,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 16:50:41,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:41,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:50:41,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:41,420 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 16:50:41,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2024-10-13 16:50:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 16:50:41,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208825545] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:41,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 16:50:41,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 15 [2024-10-13 16:50:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230389117] [2024-10-13 16:50:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:41,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:50:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:41,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:50:41,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-10-13 16:50:41,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-10-13 16:50:41,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 152 transitions, 1218 flow. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2024-10-13 16:50:41,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:41,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-10-13 16:50:41,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:42,354 INFO L124 PetriNetUnfolderBase]: 6311/11633 cut-off events. [2024-10-13 16:50:42,355 INFO L125 PetriNetUnfolderBase]: For 19825/20209 co-relation queries the response was YES. [2024-10-13 16:50:42,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36151 conditions, 11633 events. 6311/11633 cut-off events. For 19825/20209 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 85303 event pairs, 729 based on Foata normal form. 163/11508 useless extension candidates. Maximal degree in co-relation 36107. Up to 5303 conditions per place. [2024-10-13 16:50:42,435 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 147 selfloop transitions, 19 changer transitions 0/195 dead transitions. [2024-10-13 16:50:42,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 195 transitions, 1701 flow [2024-10-13 16:50:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:50:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:50:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 231 transitions. [2024-10-13 16:50:42,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5848101265822785 [2024-10-13 16:50:42,436 INFO L175 Difference]: Start difference. First operand has 170 places, 152 transitions, 1218 flow. Second operand 5 states and 231 transitions. [2024-10-13 16:50:42,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 195 transitions, 1701 flow [2024-10-13 16:50:42,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 195 transitions, 1622 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-10-13 16:50:42,519 INFO L231 Difference]: Finished difference. Result has 161 places, 151 transitions, 1179 flow [2024-10-13 16:50:42,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1179, PETRI_PLACES=161, PETRI_TRANSITIONS=151} [2024-10-13 16:50:42,520 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 83 predicate places. [2024-10-13 16:50:42,520 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 151 transitions, 1179 flow [2024-10-13 16:50:42,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2024-10-13 16:50:42,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:42,521 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:42,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:42,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:42,724 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:42,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash -182045178, now seen corresponding path program 1 times [2024-10-13 16:50:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:42,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612239514] [2024-10-13 16:50:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:43,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:43,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612239514] [2024-10-13 16:50:43,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612239514] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:43,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714659182] [2024-10-13 16:50:43,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:43,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:43,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:43,300 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:43,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 16:50:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:43,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 16:50:43,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:50:43,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:43,547 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 16:50:43,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-10-13 16:50:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 16:50:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714659182] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:43,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 16:50:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 15 [2024-10-13 16:50:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92505999] [2024-10-13 16:50:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:43,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:50:43,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:50:43,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-10-13 16:50:43,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-10-13 16:50:43,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 151 transitions, 1179 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:43,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:43,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-10-13 16:50:43,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:44,506 INFO L124 PetriNetUnfolderBase]: 6112/11119 cut-off events. [2024-10-13 16:50:44,506 INFO L125 PetriNetUnfolderBase]: For 22615/23068 co-relation queries the response was YES. [2024-10-13 16:50:44,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35287 conditions, 11119 events. 6112/11119 cut-off events. For 22615/23068 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 79516 event pairs, 726 based on Foata normal form. 103/10886 useless extension candidates. Maximal degree in co-relation 35241. Up to 4990 conditions per place. [2024-10-13 16:50:44,586 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 145 selfloop transitions, 19 changer transitions 0/193 dead transitions. [2024-10-13 16:50:44,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 193 transitions, 1643 flow [2024-10-13 16:50:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:50:44,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:50:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-10-13 16:50:44,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822784810126582 [2024-10-13 16:50:44,587 INFO L175 Difference]: Start difference. First operand has 161 places, 151 transitions, 1179 flow. Second operand 5 states and 230 transitions. [2024-10-13 16:50:44,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 193 transitions, 1643 flow [2024-10-13 16:50:44,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 193 transitions, 1613 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-13 16:50:44,679 INFO L231 Difference]: Finished difference. Result has 162 places, 149 transitions, 1163 flow [2024-10-13 16:50:44,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1163, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2024-10-13 16:50:44,680 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 84 predicate places. [2024-10-13 16:50:44,680 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 1163 flow [2024-10-13 16:50:44,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:44,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:44,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:44,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:44,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-10-13 16:50:44,881 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:44,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash 318005700, now seen corresponding path program 1 times [2024-10-13 16:50:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:44,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053379494] [2024-10-13 16:50:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:45,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:45,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053379494] [2024-10-13 16:50:45,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053379494] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:45,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648945070] [2024-10-13 16:50:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:45,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:45,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:45,562 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:45,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 16:50:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:45,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 16:50:45,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:50:45,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:45,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:45,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-10-13 16:50:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 16:50:46,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648945070] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:46,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 16:50:46,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 5] total 18 [2024-10-13 16:50:46,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048796350] [2024-10-13 16:50:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:46,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:50:46,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:50:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-10-13 16:50:46,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-10-13 16:50:46,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 1163 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2024-10-13 16:50:46,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:46,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-10-13 16:50:46,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:46,997 INFO L124 PetriNetUnfolderBase]: 6784/11864 cut-off events. [2024-10-13 16:50:46,997 INFO L125 PetriNetUnfolderBase]: For 25617/25967 co-relation queries the response was YES. [2024-10-13 16:50:47,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37687 conditions, 11864 events. 6784/11864 cut-off events. For 25617/25967 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 82479 event pairs, 357 based on Foata normal form. 150/11870 useless extension candidates. Maximal degree in co-relation 37641. Up to 4688 conditions per place. [2024-10-13 16:50:47,079 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 146 selfloop transitions, 20 changer transitions 0/193 dead transitions. [2024-10-13 16:50:47,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 193 transitions, 1655 flow [2024-10-13 16:50:47,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:50:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:50:47,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-10-13 16:50:47,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5645569620253165 [2024-10-13 16:50:47,081 INFO L175 Difference]: Start difference. First operand has 162 places, 149 transitions, 1163 flow. Second operand 5 states and 223 transitions. [2024-10-13 16:50:47,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 193 transitions, 1655 flow [2024-10-13 16:50:47,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 193 transitions, 1610 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:50:47,180 INFO L231 Difference]: Finished difference. Result has 162 places, 149 transitions, 1170 flow [2024-10-13 16:50:47,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1170, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2024-10-13 16:50:47,180 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 84 predicate places. [2024-10-13 16:50:47,181 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 1170 flow [2024-10-13 16:50:47,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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) [2024-10-13 16:50:47,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:47,181 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, 1, 1, 1, 1] [2024-10-13 16:50:47,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 16:50:47,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:47,382 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:47,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:47,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1830325998, now seen corresponding path program 1 times [2024-10-13 16:50:47,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:47,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868151457] [2024-10-13 16:50:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:47,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:47,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:47,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868151457] [2024-10-13 16:50:47,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868151457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:47,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216065634] [2024-10-13 16:50:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:47,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:47,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:47,760 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:47,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 16:50:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:47,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 16:50:47,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:47,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:50:48,344 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 16:50:48,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-13 16:50:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:48,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:48,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-10-13 16:50:48,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-10-13 16:50:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:48,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216065634] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:48,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:48,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-10-13 16:50:48,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927915145] [2024-10-13 16:50:48,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:48,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 16:50:48,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:48,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 16:50:48,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-10-13 16:50:49,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-10-13 16:50:49,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 1170 flow. Second operand has 23 states, 23 states have (on average 23.73913043478261) internal successors, (546), 23 states have internal predecessors, (546), 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) [2024-10-13 16:50:49,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:49,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-10-13 16:50:49,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:54,218 INFO L124 PetriNetUnfolderBase]: 17337/28122 cut-off events. [2024-10-13 16:50:54,218 INFO L125 PetriNetUnfolderBase]: For 77109/78682 co-relation queries the response was YES. [2024-10-13 16:50:54,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94023 conditions, 28122 events. 17337/28122 cut-off events. For 77109/78682 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 210187 event pairs, 3476 based on Foata normal form. 50/27096 useless extension candidates. Maximal degree in co-relation 93977. Up to 3818 conditions per place. [2024-10-13 16:50:54,416 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 390 selfloop transitions, 77 changer transitions 9/499 dead transitions. [2024-10-13 16:50:54,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 499 transitions, 4011 flow [2024-10-13 16:50:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-13 16:50:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-13 16:50:54,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 827 transitions. [2024-10-13 16:50:54,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4026290165530672 [2024-10-13 16:50:54,418 INFO L175 Difference]: Start difference. First operand has 162 places, 149 transitions, 1170 flow. Second operand 26 states and 827 transitions. [2024-10-13 16:50:54,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 499 transitions, 4011 flow [2024-10-13 16:50:54,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 499 transitions, 3920 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-13 16:50:54,592 INFO L231 Difference]: Finished difference. Result has 191 places, 169 transitions, 1498 flow [2024-10-13 16:50:54,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1498, PETRI_PLACES=191, PETRI_TRANSITIONS=169} [2024-10-13 16:50:54,592 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 113 predicate places. [2024-10-13 16:50:54,592 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 169 transitions, 1498 flow [2024-10-13 16:50:54,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 23.73913043478261) internal successors, (546), 23 states have internal predecessors, (546), 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) [2024-10-13 16:50:54,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:54,593 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, 1, 1, 1, 1, 1] [2024-10-13 16:50:54,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 16:50:54,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:54,793 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:50:54,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash 604278011, now seen corresponding path program 1 times [2024-10-13 16:50:54,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:54,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628076713] [2024-10-13 16:50:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:54,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:55,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:55,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628076713] [2024-10-13 16:50:55,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628076713] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:55,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477955799] [2024-10-13 16:50:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:55,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:55,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:55,428 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:55,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 16:50:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:55,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 16:50:55,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:55,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:50:55,858 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 16:50:55,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-13 16:50:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:55,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:56,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-13 16:50:56,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-10-13 16:50:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:56,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477955799] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:56,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:56,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-10-13 16:50:56,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2218188] [2024-10-13 16:50:56,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:56,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 16:50:56,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:56,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 16:50:56,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-10-13 16:50:56,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-10-13 16:50:56,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 169 transitions, 1498 flow. Second operand has 23 states, 23 states have (on average 24.608695652173914) internal successors, (566), 23 states have internal predecessors, (566), 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) [2024-10-13 16:50:56,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:56,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-10-13 16:50:56,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:01,159 INFO L124 PetriNetUnfolderBase]: 14010/23730 cut-off events. [2024-10-13 16:51:01,159 INFO L125 PetriNetUnfolderBase]: For 75028/76531 co-relation queries the response was YES. [2024-10-13 16:51:01,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84380 conditions, 23730 events. 14010/23730 cut-off events. For 75028/76531 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 181360 event pairs, 3476 based on Foata normal form. 589/24150 useless extension candidates. Maximal degree in co-relation 84326. Up to 3289 conditions per place. [2024-10-13 16:51:01,333 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 295 selfloop transitions, 72 changer transitions 9/401 dead transitions. [2024-10-13 16:51:01,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 401 transitions, 3555 flow [2024-10-13 16:51:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 16:51:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 16:51:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 664 transitions. [2024-10-13 16:51:01,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4002411091018686 [2024-10-13 16:51:01,335 INFO L175 Difference]: Start difference. First operand has 191 places, 169 transitions, 1498 flow. Second operand 21 states and 664 transitions. [2024-10-13 16:51:01,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 401 transitions, 3555 flow [2024-10-13 16:51:01,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 401 transitions, 3438 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-10-13 16:51:01,592 INFO L231 Difference]: Finished difference. Result has 202 places, 169 transitions, 1534 flow [2024-10-13 16:51:01,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1534, PETRI_PLACES=202, PETRI_TRANSITIONS=169} [2024-10-13 16:51:01,593 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 124 predicate places. [2024-10-13 16:51:01,593 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 169 transitions, 1534 flow [2024-10-13 16:51:01,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 24.608695652173914) internal successors, (566), 23 states have internal predecessors, (566), 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) [2024-10-13 16:51:01,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:01,593 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] [2024-10-13 16:51:01,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-13 16:51:01,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 16:51:01,794 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:51:01,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:01,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1228211200, now seen corresponding path program 1 times [2024-10-13 16:51:01,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:01,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720563656] [2024-10-13 16:51:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:01,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 16:51:01,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:01,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720563656] [2024-10-13 16:51:01,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720563656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:01,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:01,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:51:01,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468919499] [2024-10-13 16:51:01,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:01,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:51:01,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:01,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:51:01,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:51:01,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-13 16:51:01,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 169 transitions, 1534 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2024-10-13 16:51:01,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:01,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-13 16:51:01,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:06,785 INFO L124 PetriNetUnfolderBase]: 20747/39043 cut-off events. [2024-10-13 16:51:06,785 INFO L125 PetriNetUnfolderBase]: For 135160/136300 co-relation queries the response was YES. [2024-10-13 16:51:07,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136395 conditions, 39043 events. 20747/39043 cut-off events. For 135160/136300 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 339810 event pairs, 4701 based on Foata normal form. 363/38913 useless extension candidates. Maximal degree in co-relation 136341. Up to 12864 conditions per place. [2024-10-13 16:51:07,388 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 217 selfloop transitions, 21 changer transitions 0/270 dead transitions. [2024-10-13 16:51:07,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 270 transitions, 2801 flow [2024-10-13 16:51:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-10-13 16:51:07,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6740506329113924 [2024-10-13 16:51:07,389 INFO L175 Difference]: Start difference. First operand has 202 places, 169 transitions, 1534 flow. Second operand 4 states and 213 transitions. [2024-10-13 16:51:07,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 270 transitions, 2801 flow [2024-10-13 16:51:07,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 270 transitions, 2585 flow, removed 3 selfloop flow, removed 20 redundant places. [2024-10-13 16:51:07,988 INFO L231 Difference]: Finished difference. Result has 187 places, 176 transitions, 1537 flow [2024-10-13 16:51:07,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1537, PETRI_PLACES=187, PETRI_TRANSITIONS=176} [2024-10-13 16:51:07,989 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 109 predicate places. [2024-10-13 16:51:07,989 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 176 transitions, 1537 flow [2024-10-13 16:51:07,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2024-10-13 16:51:07,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:07,990 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:07,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 16:51:07,990 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:51:07,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash 177544983, now seen corresponding path program 1 times [2024-10-13 16:51:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:07,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485176037] [2024-10-13 16:51:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:51:08,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:08,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485176037] [2024-10-13 16:51:08,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485176037] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:08,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071660194] [2024-10-13 16:51:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:08,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:08,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:08,116 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:08,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 16:51:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:08,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:51:08,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 16:51:08,283 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:51:08,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071660194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:08,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:51:08,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-13 16:51:08,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70075348] [2024-10-13 16:51:08,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:08,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:08,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:08,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:08,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:51:08,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-13 16:51:08,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 176 transitions, 1537 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:08,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:08,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-13 16:51:08,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:15,178 INFO L124 PetriNetUnfolderBase]: 29094/53981 cut-off events. [2024-10-13 16:51:15,178 INFO L125 PetriNetUnfolderBase]: For 211576/214513 co-relation queries the response was YES. [2024-10-13 16:51:15,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195399 conditions, 53981 events. 29094/53981 cut-off events. For 211576/214513 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 487292 event pairs, 8734 based on Foata normal form. 424/52768 useless extension candidates. Maximal degree in co-relation 195346. Up to 15212 conditions per place. [2024-10-13 16:51:15,751 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 194 selfloop transitions, 19 changer transitions 5/249 dead transitions. [2024-10-13 16:51:15,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 249 transitions, 2479 flow [2024-10-13 16:51:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-10-13 16:51:15,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6550632911392406 [2024-10-13 16:51:15,752 INFO L175 Difference]: Start difference. First operand has 187 places, 176 transitions, 1537 flow. Second operand 4 states and 207 transitions. [2024-10-13 16:51:15,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 249 transitions, 2479 flow [2024-10-13 16:51:16,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 249 transitions, 2443 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-10-13 16:51:16,667 INFO L231 Difference]: Finished difference. Result has 192 places, 179 transitions, 1654 flow [2024-10-13 16:51:16,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1654, PETRI_PLACES=192, PETRI_TRANSITIONS=179} [2024-10-13 16:51:16,667 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 114 predicate places. [2024-10-13 16:51:16,667 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 179 transitions, 1654 flow [2024-10-13 16:51:16,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:16,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:16,668 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:16,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-13 16:51:16,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:16,868 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-10-13 16:51:16,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:16,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1555592873, now seen corresponding path program 1 times [2024-10-13 16:51:16,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:16,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873639591] [2024-10-13 16:51:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:16,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-13 16:51:17,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:17,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873639591] [2024-10-13 16:51:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873639591] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94444231] [2024-10-13 16:51:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:17,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:17,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:17,007 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:17,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 16:51:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:17,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 16:51:17,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-13 16:51:17,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-13 16:51:17,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94444231] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:17,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:17,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-13 16:51:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357138111] [2024-10-13 16:51:17,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:17,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:51:17,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:17,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:51:17,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:51:17,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-10-13 16:51:17,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 179 transitions, 1654 flow. Second operand has 15 states, 15 states have (on average 31.333333333333332) internal successors, (470), 15 states have internal predecessors, (470), 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) [2024-10-13 16:51:17,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:17,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-10-13 16:51:17,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand