./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-send-receive.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 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:08:48,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:08:48,676 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:08:48,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:08:48,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:08:48,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:08:48,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:08:48,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:08:48,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:08:48,726 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:08:48,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:08:48,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:08:48,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:08:48,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:08:48,730 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:08:48,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:08:48,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:08:48,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:08:48,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:08:48,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:08:48,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:08:48,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:08:48,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:08:48,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:08:48,737 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:08:48,737 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:08:48,737 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:08:48,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:08:48,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:08:48,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:08:48,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:08:48,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:08:48,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:08:48,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:08:48,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:08:48,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:08:48,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:08:48,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:08:48,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:08:48,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:08:48,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:08:48,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:08:48,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:08:48,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:08:48,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 [2024-11-19 14:08:49,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:08:49,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:08:49,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:08:49,034 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:08:49,034 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:08:49,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-11-19 14:08:50,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:08:50,645 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:08:50,646 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-11-19 14:08:50,654 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e30a3041/9319bfd50612487db15f1716aaa8ac59/FLAG97b6038d5 [2024-11-19 14:08:50,666 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e30a3041/9319bfd50612487db15f1716aaa8ac59 [2024-11-19 14:08:50,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:08:50,670 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:08:50,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:08:50,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:08:50,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:08:50,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:50,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489b9926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50, skipping insertion in model container [2024-11-19 14:08:50,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:50,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:08:50,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:08:50,915 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:08:50,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:08:50,952 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:08:50,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50 WrapperNode [2024-11-19 14:08:50,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:08:50,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:08:50,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:08:50,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:08:50,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:50,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:50,988 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 160 [2024-11-19 14:08:50,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:08:50,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:08:50,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:08:50,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:08:51,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:51,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:51,007 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:51,021 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 14:08:51,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:51,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:51,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:51,037 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:51,038 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:51,039 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:51,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:08:51,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:08:51,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:08:51,043 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:08:51,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (1/1) ... [2024-11-19 14:08:51,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:08:51,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:51,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:08:51,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:08:51,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:08:51,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:08:51,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:08:51,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:08:51,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:08:51,136 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:08:51,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:08:51,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:08:51,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:08:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:08:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:08:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:08:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:08:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:08:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:08:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:08:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:08:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:08:51,140 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:08:51,273 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:08:51,276 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:08:51,605 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:08:51,605 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:08:51,871 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:08:51,872 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 14:08:51,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:08:51 BoogieIcfgContainer [2024-11-19 14:08:51,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:08:51,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:08:51,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:08:51,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:08:51,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:08:50" (1/3) ... [2024-11-19 14:08:51,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743cd94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:08:51, skipping insertion in model container [2024-11-19 14:08:51,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:08:50" (2/3) ... [2024-11-19 14:08:51,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743cd94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:08:51, skipping insertion in model container [2024-11-19 14:08:51,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:08:51" (3/3) ... [2024-11-19 14:08:51,884 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2024-11-19 14:08:51,901 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:08:51,901 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-19 14:08:51,901 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:08:51,968 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:08:52,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-11-19 14:08:52,064 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-11-19 14:08:52,064 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:08:52,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 118 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-19 14:08:52,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-11-19 14:08:52,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 41 transitions, 94 flow [2024-11-19 14:08:52,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:08:52,094 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;@7cd8c43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:08:52,095 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-19 14:08:52,099 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:08:52,100 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:08:52,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:08:52,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:52,102 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:08:52,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:08:52,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:52,108 INFO L85 PathProgramCache]: Analyzing trace with hash 481343, now seen corresponding path program 1 times [2024-11-19 14:08:52,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:52,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073867634] [2024-11-19 14:08:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:52,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:52,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073867634] [2024-11-19 14:08:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073867634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:52,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:52,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:08:52,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780356729] [2024-11-19 14:08:52,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:52,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:52,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:52,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:52,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:08:52,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:08:52,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:52,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:52,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:08:52,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:52,757 INFO L124 PetriNetUnfolderBase]: 641/1139 cut-off events. [2024-11-19 14:08:52,757 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-19 14:08:52,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1139 events. 641/1139 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8283 event pairs, 594 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 2142. Up to 994 conditions per place. [2024-11-19 14:08:52,777 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-11-19 14:08:52,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 160 flow [2024-11-19 14:08:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-19 14:08:52,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 14:08:52,794 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 94 flow. Second operand 4 states and 94 transitions. [2024-11-19 14:08:52,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 160 flow [2024-11-19 14:08:52,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:08:52,810 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 115 flow [2024-11-19 14:08:52,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-19 14:08:52,818 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2024-11-19 14:08:52,818 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 115 flow [2024-11-19 14:08:52,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:52,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:52,819 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:08:52,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:08:52,820 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:08:52,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:52,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1455239938, now seen corresponding path program 1 times [2024-11-19 14:08:52,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:52,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977185579] [2024-11-19 14:08:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:52,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:52,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:53,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977185579] [2024-11-19 14:08:53,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977185579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:53,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741288707] [2024-11-19 14:08:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:53,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:53,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:53,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:53,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:08:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:53,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:08:53,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:53,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:08:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741288707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:53,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:08:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:08:53,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916011588] [2024-11-19 14:08:53,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:53,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:08:53,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:08:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:08:53,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:08:53,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:53,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:53,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:08:53,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:53,358 INFO L124 PetriNetUnfolderBase]: 641/1138 cut-off events. [2024-11-19 14:08:53,359 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:08:53,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 1138 events. 641/1138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8346 event pairs, 594 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 2242. Up to 989 conditions per place. [2024-11-19 14:08:53,369 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 23 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-11-19 14:08:53,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 171 flow [2024-11-19 14:08:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:08:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:08:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-11-19 14:08:53,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42907801418439717 [2024-11-19 14:08:53,371 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 115 flow. Second operand 6 states and 121 transitions. [2024-11-19 14:08:53,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 171 flow [2024-11-19 14:08:53,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:08:53,374 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 122 flow [2024-11-19 14:08:53,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-11-19 14:08:53,377 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-11-19 14:08:53,377 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 122 flow [2024-11-19 14:08:53,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:53,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:53,378 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:08:53,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:08:53,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:53,580 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:08:53,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2132201723, now seen corresponding path program 1 times [2024-11-19 14:08:53,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:53,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239595067] [2024-11-19 14:08:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:53,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:53,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:53,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239595067] [2024-11-19 14:08:53,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239595067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:53,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596264276] [2024-11-19 14:08:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:53,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:53,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:53,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:53,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:08:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:53,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:08:53,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:53,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:53,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596264276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:53,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:53,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:08:53,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742973102] [2024-11-19 14:08:53,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:53,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:08:53,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:53,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:08:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:08:53,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:08:53,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 122 flow. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:53,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:53,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:08:53,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:54,122 INFO L124 PetriNetUnfolderBase]: 644/1150 cut-off events. [2024-11-19 14:08:54,123 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-19 14:08:54,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 1150 events. 644/1150 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8318 event pairs, 594 based on Foata normal form. 3/701 useless extension candidates. Maximal degree in co-relation 2243. Up to 996 conditions per place. [2024-11-19 14:08:54,132 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 26 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-11-19 14:08:54,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 254 flow [2024-11-19 14:08:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:08:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:08:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-11-19 14:08:54,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4085106382978723 [2024-11-19 14:08:54,137 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 122 flow. Second operand 10 states and 192 transitions. [2024-11-19 14:08:54,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 254 flow [2024-11-19 14:08:54,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-19 14:08:54,141 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-11-19 14:08:54,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-19 14:08:54,142 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2024-11-19 14:08:54,142 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-11-19 14:08:54,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:54,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:54,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:54,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:08:54,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 14:08:54,345 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:08:54,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2058279086, now seen corresponding path program 1 times [2024-11-19 14:08:54,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:54,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886879744] [2024-11-19 14:08:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:54,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:54,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:54,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886879744] [2024-11-19 14:08:54,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886879744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:54,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:54,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:08:54,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143910612] [2024-11-19 14:08:54,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:54,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:08:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:08:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:08:54,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-19 14:08:54,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:54,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:54,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-19 14:08:54,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:54,614 INFO L124 PetriNetUnfolderBase]: 921/1501 cut-off events. [2024-11-19 14:08:54,614 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-19 14:08:54,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 1501 events. 921/1501 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7857 event pairs, 301 based on Foata normal form. 48/989 useless extension candidates. Maximal degree in co-relation 2942. Up to 1026 conditions per place. [2024-11-19 14:08:54,627 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 48 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2024-11-19 14:08:54,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 309 flow [2024-11-19 14:08:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:08:54,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:08:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-19 14:08:54,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-11-19 14:08:54,629 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 95 transitions. [2024-11-19 14:08:54,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 309 flow [2024-11-19 14:08:54,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 298 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 14:08:54,633 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 188 flow [2024-11-19 14:08:54,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-19 14:08:54,634 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2024-11-19 14:08:54,634 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 188 flow [2024-11-19 14:08:54,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:54,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:54,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:54,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:08:54,635 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:08:54,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash -80674940, now seen corresponding path program 1 times [2024-11-19 14:08:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:54,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813260592] [2024-11-19 14:08:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:54,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:54,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:54,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:54,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813260592] [2024-11-19 14:08:54,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813260592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:54,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:54,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:08:54,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799744471] [2024-11-19 14:08:54,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:54,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:08:54,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:54,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:08:54,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:08:54,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-19 14:08:54,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:54,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:54,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-19 14:08:54,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:54,844 INFO L124 PetriNetUnfolderBase]: 681/1097 cut-off events. [2024-11-19 14:08:54,845 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-19 14:08:54,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 1097 events. 681/1097 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5431 event pairs, 436 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 2531. Up to 970 conditions per place. [2024-11-19 14:08:54,852 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2024-11-19 14:08:54,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 260 flow [2024-11-19 14:08:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:08:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:08:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-19 14:08:54,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-11-19 14:08:54,856 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 188 flow. Second operand 3 states and 77 transitions. [2024-11-19 14:08:54,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 260 flow [2024-11-19 14:08:54,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:08:54,881 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 183 flow [2024-11-19 14:08:54,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-19 14:08:54,883 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2024-11-19 14:08:54,883 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 183 flow [2024-11-19 14:08:54,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:54,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:54,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:54,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:08:54,884 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:08:54,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash -80674939, now seen corresponding path program 1 times [2024-11-19 14:08:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:54,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724448065] [2024-11-19 14:08:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:54,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:54,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724448065] [2024-11-19 14:08:54,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724448065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:54,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:54,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:08:54,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614023865] [2024-11-19 14:08:54,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:54,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:54,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:54,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:08:54,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-19 14:08:54,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:54,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:54,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-19 14:08:54,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:55,140 INFO L124 PetriNetUnfolderBase]: 732/1212 cut-off events. [2024-11-19 14:08:55,140 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-19 14:08:55,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 1212 events. 732/1212 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6163 event pairs, 488 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 2756. Up to 968 conditions per place. [2024-11-19 14:08:55,148 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 35 selfloop transitions, 2 changer transitions 12/62 dead transitions. [2024-11-19 14:08:55,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 309 flow [2024-11-19 14:08:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:55,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-19 14:08:55,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-11-19 14:08:55,151 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 183 flow. Second operand 4 states and 107 transitions. [2024-11-19 14:08:55,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 309 flow [2024-11-19 14:08:55,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:08:55,154 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 185 flow [2024-11-19 14:08:55,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-11-19 14:08:55,155 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2024-11-19 14:08:55,156 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 185 flow [2024-11-19 14:08:55,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:55,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:55,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:55,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:08:55,157 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:08:55,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2140607330, now seen corresponding path program 1 times [2024-11-19 14:08:55,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:55,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174271308] [2024-11-19 14:08:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:55,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:55,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174271308] [2024-11-19 14:08:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174271308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:55,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841004701] [2024-11-19 14:08:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:55,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:55,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:55,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:55,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:08:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:55,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:08:55,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:08:55,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:08:55,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841004701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:55,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:08:55,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-19 14:08:55,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256004028] [2024-11-19 14:08:55,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:55,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:55,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:55,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:08:55,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-19 14:08:55,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:55,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:55,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-19 14:08:55,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:55,546 INFO L124 PetriNetUnfolderBase]: 380/698 cut-off events. [2024-11-19 14:08:55,546 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-19 14:08:55,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 698 events. 380/698 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3447 event pairs, 148 based on Foata normal form. 92/643 useless extension candidates. Maximal degree in co-relation 1568. Up to 399 conditions per place. [2024-11-19 14:08:55,550 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 33 selfloop transitions, 6 changer transitions 4/56 dead transitions. [2024-11-19 14:08:55,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 290 flow [2024-11-19 14:08:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-19 14:08:55,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-11-19 14:08:55,552 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 185 flow. Second operand 4 states and 102 transitions. [2024-11-19 14:08:55,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 290 flow [2024-11-19 14:08:55,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 284 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 14:08:55,554 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 178 flow [2024-11-19 14:08:55,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-19 14:08:55,555 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-11-19 14:08:55,555 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 178 flow [2024-11-19 14:08:55,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:55,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:55,556 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:08:55,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:08:55,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:55,757 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:08:55,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:55,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1730512680, now seen corresponding path program 2 times [2024-11-19 14:08:55,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:55,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001656718] [2024-11-19 14:08:55,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:08:55,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:55,775 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:08:55,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:08:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:08:55,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:55,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001656718] [2024-11-19 14:08:55,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001656718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:55,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381116192] [2024-11-19 14:08:55,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:08:55,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:55,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:55,816 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:55,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:08:55,878 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:08:55,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:08:55,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:08:55,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:08:55,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:55,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:08:55,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381116192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:55,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:55,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:08:55,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152286138] [2024-11-19 14:08:55,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:55,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:55,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:55,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:55,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:08:55,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:08:55,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:55,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:55,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:08:55,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:56,013 INFO L124 PetriNetUnfolderBase]: 239/413 cut-off events. [2024-11-19 14:08:56,013 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-11-19 14:08:56,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 413 events. 239/413 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1528 event pairs, 127 based on Foata normal form. 1/322 useless extension candidates. Maximal degree in co-relation 1075. Up to 338 conditions per place. [2024-11-19 14:08:56,016 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 17 selfloop transitions, 15 changer transitions 0/44 dead transitions. [2024-11-19 14:08:56,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 44 transitions, 232 flow [2024-11-19 14:08:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:08:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:08:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-19 14:08:56,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-11-19 14:08:56,017 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 178 flow. Second operand 4 states and 80 transitions. [2024-11-19 14:08:56,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 44 transitions, 232 flow [2024-11-19 14:08:56,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 210 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-19 14:08:56,019 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 176 flow [2024-11-19 14:08:56,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-11-19 14:08:56,019 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-19 14:08:56,020 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 176 flow [2024-11-19 14:08:56,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:56,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:56,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:56,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:08:56,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:56,221 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:08:56,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:56,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1814298192, now seen corresponding path program 1 times [2024-11-19 14:08:56,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:56,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341409960] [2024-11-19 14:08:56,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:56,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:56,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:56,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341409960] [2024-11-19 14:08:56,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341409960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:56,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270193706] [2024-11-19 14:08:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:56,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:56,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:56,641 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:56,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:08:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:56,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 14:08:56,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:56,793 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 [2024-11-19 14:08:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:57,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:08:57,448 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 [2024-11-19 14:08:57,454 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 [2024-11-19 14:08:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:08:57,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270193706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:08:57,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:08:57,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-19 14:08:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553621560] [2024-11-19 14:08:57,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:08:57,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 14:08:57,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:57,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 14:08:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-19 14:08:57,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:08:57,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 176 flow. Second operand has 18 states, 18 states have (on average 16.833333333333332) internal successors, (303), 18 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:57,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:57,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:08:57,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:59,601 INFO L124 PetriNetUnfolderBase]: 851/1741 cut-off events. [2024-11-19 14:08:59,601 INFO L125 PetriNetUnfolderBase]: For 428/428 co-relation queries the response was YES. [2024-11-19 14:08:59,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3776 conditions, 1741 events. 851/1741 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10842 event pairs, 111 based on Foata normal form. 54/1396 useless extension candidates. Maximal degree in co-relation 3766. Up to 565 conditions per place. [2024-11-19 14:08:59,612 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 120 selfloop transitions, 38 changer transitions 5/175 dead transitions. [2024-11-19 14:08:59,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 175 transitions, 872 flow [2024-11-19 14:08:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 14:08:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 14:08:59,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 528 transitions. [2024-11-19 14:08:59,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4884366327474561 [2024-11-19 14:08:59,615 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 176 flow. Second operand 23 states and 528 transitions. [2024-11-19 14:08:59,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 175 transitions, 872 flow [2024-11-19 14:08:59,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 175 transitions, 842 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:08:59,619 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 474 flow [2024-11-19 14:08:59,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=474, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-11-19 14:08:59,620 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2024-11-19 14:08:59,620 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 474 flow [2024-11-19 14:08:59,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.833333333333332) internal successors, (303), 18 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:59,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:59,620 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:59,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 14:08:59,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:59,825 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:08:59,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:59,826 INFO L85 PathProgramCache]: Analyzing trace with hash -268535991, now seen corresponding path program 1 times [2024-11-19 14:08:59,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:59,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519853110] [2024-11-19 14:08:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:08:59,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:59,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519853110] [2024-11-19 14:08:59,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519853110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:59,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:08:59,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:08:59,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871631986] [2024-11-19 14:08:59,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:59,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:08:59,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:59,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:08:59,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:08:59,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:08:59,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:59,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:59,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:08:59,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:00,097 INFO L124 PetriNetUnfolderBase]: 893/1550 cut-off events. [2024-11-19 14:09:00,098 INFO L125 PetriNetUnfolderBase]: For 13152/13152 co-relation queries the response was YES. [2024-11-19 14:09:00,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6169 conditions, 1550 events. 893/1550 cut-off events. For 13152/13152 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8791 event pairs, 321 based on Foata normal form. 18/1497 useless extension candidates. Maximal degree in co-relation 6142. Up to 1123 conditions per place. [2024-11-19 14:09:00,111 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 63 selfloop transitions, 2 changer transitions 1/76 dead transitions. [2024-11-19 14:09:00,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 634 flow [2024-11-19 14:09:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:09:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:09:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-19 14:09:00,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-11-19 14:09:00,113 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 474 flow. Second operand 3 states and 78 transitions. [2024-11-19 14:09:00,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 76 transitions, 634 flow [2024-11-19 14:09:00,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 581 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-11-19 14:09:00,135 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 365 flow [2024-11-19 14:09:00,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-11-19 14:09:00,136 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2024-11-19 14:09:00,137 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 365 flow [2024-11-19 14:09:00,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:00,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:00,138 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:00,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 14:09:00,138 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:00,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:00,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1850361159, now seen corresponding path program 1 times [2024-11-19 14:09:00,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:00,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171373755] [2024-11-19 14:09:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:00,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:01,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:01,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171373755] [2024-11-19 14:09:01,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171373755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:01,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884460744] [2024-11-19 14:09:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:01,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:01,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:01,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:01,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:09:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:01,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 14:09:01,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:01,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:01,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:01,434 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 [2024-11-19 14:09:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:01,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884460744] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:01,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 14:09:01,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10, 6] total 18 [2024-11-19 14:09:01,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531861885] [2024-11-19 14:09:01,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:01,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:01,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:01,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:01,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-19 14:09:01,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-19 14:09:01,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:01,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:01,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-19 14:09:01,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:01,695 INFO L124 PetriNetUnfolderBase]: 593/1208 cut-off events. [2024-11-19 14:09:01,695 INFO L125 PetriNetUnfolderBase]: For 5674/5674 co-relation queries the response was YES. [2024-11-19 14:09:01,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 1208 events. 593/1208 cut-off events. For 5674/5674 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6933 event pairs, 69 based on Foata normal form. 48/1235 useless extension candidates. Maximal degree in co-relation 4025. Up to 409 conditions per place. [2024-11-19 14:09:01,706 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 57 selfloop transitions, 9 changer transitions 1/80 dead transitions. [2024-11-19 14:09:01,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 571 flow [2024-11-19 14:09:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-19 14:09:01,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-11-19 14:09:01,708 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 365 flow. Second operand 4 states and 105 transitions. [2024-11-19 14:09:01,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 571 flow [2024-11-19 14:09:01,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 558 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:01,717 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 397 flow [2024-11-19 14:09:01,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=397, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2024-11-19 14:09:01,717 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2024-11-19 14:09:01,718 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 397 flow [2024-11-19 14:09:01,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:01,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:01,718 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:01,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:09:01,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:01,920 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:01,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash -785092121, now seen corresponding path program 1 times [2024-11-19 14:09:01,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:01,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963043295] [2024-11-19 14:09:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:01,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:09:01,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:01,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963043295] [2024-11-19 14:09:01,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963043295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:01,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:01,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:09:01,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331713296] [2024-11-19 14:09:01,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:01,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:09:01,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:09:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:09:01,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-19 14:09:01,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:01,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:01,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-19 14:09:01,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:02,194 INFO L124 PetriNetUnfolderBase]: 851/1704 cut-off events. [2024-11-19 14:09:02,195 INFO L125 PetriNetUnfolderBase]: For 10757/10757 co-relation queries the response was YES. [2024-11-19 14:09:02,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6289 conditions, 1704 events. 851/1704 cut-off events. For 10757/10757 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10391 event pairs, 159 based on Foata normal form. 66/1738 useless extension candidates. Maximal degree in co-relation 6263. Up to 631 conditions per place. [2024-11-19 14:09:02,215 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 59 selfloop transitions, 18 changer transitions 1/91 dead transitions. [2024-11-19 14:09:02,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 91 transitions, 744 flow [2024-11-19 14:09:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-19 14:09:02,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-11-19 14:09:02,216 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 397 flow. Second operand 4 states and 109 transitions. [2024-11-19 14:09:02,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 91 transitions, 744 flow [2024-11-19 14:09:02,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 91 transitions, 729 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:02,232 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 565 flow [2024-11-19 14:09:02,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=565, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2024-11-19 14:09:02,234 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2024-11-19 14:09:02,234 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 565 flow [2024-11-19 14:09:02,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:02,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:02,235 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:02,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 14:09:02,235 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:02,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:02,235 INFO L85 PathProgramCache]: Analyzing trace with hash 335998672, now seen corresponding path program 2 times [2024-11-19 14:09:02,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:02,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052495575] [2024-11-19 14:09:02,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:02,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:02,253 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:09:02,253 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:02,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:02,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052495575] [2024-11-19 14:09:02,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052495575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:02,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:02,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:09:02,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977419276] [2024-11-19 14:09:02,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:02,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:02,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-19 14:09:02,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 565 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:02,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:02,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-19 14:09:02,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:02,555 INFO L124 PetriNetUnfolderBase]: 803/1700 cut-off events. [2024-11-19 14:09:02,555 INFO L125 PetriNetUnfolderBase]: For 9523/9523 co-relation queries the response was YES. [2024-11-19 14:09:02,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6462 conditions, 1700 events. 803/1700 cut-off events. For 9523/9523 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10792 event pairs, 81 based on Foata normal form. 36/1715 useless extension candidates. Maximal degree in co-relation 6433. Up to 787 conditions per place. [2024-11-19 14:09:02,572 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 69 selfloop transitions, 10 changer transitions 1/93 dead transitions. [2024-11-19 14:09:02,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 93 transitions, 808 flow [2024-11-19 14:09:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-19 14:09:02,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-11-19 14:09:02,574 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 565 flow. Second operand 4 states and 104 transitions. [2024-11-19 14:09:02,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 93 transitions, 808 flow [2024-11-19 14:09:02,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 792 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 14:09:02,592 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 549 flow [2024-11-19 14:09:02,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=549, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-11-19 14:09:02,594 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 37 predicate places. [2024-11-19 14:09:02,595 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 549 flow [2024-11-19 14:09:02,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:02,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:02,595 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:02,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 14:09:02,595 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:02,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:02,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2032113634, now seen corresponding path program 1 times [2024-11-19 14:09:02,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:02,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391236769] [2024-11-19 14:09:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:02,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:02,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:02,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391236769] [2024-11-19 14:09:02,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391236769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:02,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639259656] [2024-11-19 14:09:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:02,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:02,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:02,747 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:02,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:09:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:02,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 14:09:02,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:02,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:03,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639259656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:03,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:03,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-19 14:09:03,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229429471] [2024-11-19 14:09:03,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:03,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 14:09:03,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:03,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 14:09:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-19 14:09:03,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:09:03,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 549 flow. Second operand has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:03,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:03,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:09:03,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:03,316 INFO L124 PetriNetUnfolderBase]: 557/1128 cut-off events. [2024-11-19 14:09:03,316 INFO L125 PetriNetUnfolderBase]: For 6851/6851 co-relation queries the response was YES. [2024-11-19 14:09:03,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4564 conditions, 1128 events. 557/1128 cut-off events. For 6851/6851 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6255 event pairs, 333 based on Foata normal form. 12/1095 useless extension candidates. Maximal degree in co-relation 4535. Up to 770 conditions per place. [2024-11-19 14:09:03,324 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 32 selfloop transitions, 10 changer transitions 22/77 dead transitions. [2024-11-19 14:09:03,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 588 flow [2024-11-19 14:09:03,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 14:09:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 14:09:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-11-19 14:09:03,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42789598108747046 [2024-11-19 14:09:03,326 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 549 flow. Second operand 9 states and 181 transitions. [2024-11-19 14:09:03,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 588 flow [2024-11-19 14:09:03,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 547 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-19 14:09:03,341 INFO L231 Difference]: Finished difference. Result has 78 places, 55 transitions, 353 flow [2024-11-19 14:09:03,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=353, PETRI_PLACES=78, PETRI_TRANSITIONS=55} [2024-11-19 14:09:03,341 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2024-11-19 14:09:03,341 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 55 transitions, 353 flow [2024-11-19 14:09:03,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:03,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:03,342 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] [2024-11-19 14:09:03,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:09:03,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:03,543 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:03,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:03,543 INFO L85 PathProgramCache]: Analyzing trace with hash -507811223, now seen corresponding path program 2 times [2024-11-19 14:09:03,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:03,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441115705] [2024-11-19 14:09:03,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:03,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:03,563 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:03,563 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 14:09:03,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:03,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441115705] [2024-11-19 14:09:03,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441115705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:09:03,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:09:03,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:09:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167009904] [2024-11-19 14:09:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:09:03,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:09:03,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:03,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:09:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:09:03,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-19 14:09:03,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 55 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:03,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:03,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-19 14:09:03,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:03,937 INFO L124 PetriNetUnfolderBase]: 1210/2059 cut-off events. [2024-11-19 14:09:03,937 INFO L125 PetriNetUnfolderBase]: For 9514/9514 co-relation queries the response was YES. [2024-11-19 14:09:03,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8098 conditions, 2059 events. 1210/2059 cut-off events. For 9514/9514 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11354 event pairs, 188 based on Foata normal form. 120/2175 useless extension candidates. Maximal degree in co-relation 8074. Up to 942 conditions per place. [2024-11-19 14:09:03,953 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 61 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-11-19 14:09:03,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 74 transitions, 618 flow [2024-11-19 14:09:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:09:03,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:09:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-19 14:09:03,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 14:09:03,954 INFO L175 Difference]: Start difference. First operand has 78 places, 55 transitions, 353 flow. Second operand 4 states and 94 transitions. [2024-11-19 14:09:03,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 74 transitions, 618 flow [2024-11-19 14:09:03,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 575 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-11-19 14:09:03,962 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 339 flow [2024-11-19 14:09:03,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-11-19 14:09:03,963 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2024-11-19 14:09:03,963 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 339 flow [2024-11-19 14:09:03,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:03,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:03,964 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] [2024-11-19 14:09:03,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 14:09:03,965 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:03,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash -225368633, now seen corresponding path program 1 times [2024-11-19 14:09:03,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:03,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683802158] [2024-11-19 14:09:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:03,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:04,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683802158] [2024-11-19 14:09:04,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683802158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898115651] [2024-11-19 14:09:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:04,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:04,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:04,777 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:04,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:09:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:04,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 14:09:04,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:05,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:05,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:05,655 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-19 14:09:05,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 44 [2024-11-19 14:09:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:06,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898115651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:06,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-11-19 14:09:06,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404958326] [2024-11-19 14:09:06,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:06,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 14:09:06,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:06,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 14:09:06,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2024-11-19 14:09:06,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:09:06,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 339 flow. Second operand has 32 states, 32 states have (on average 16.5) internal successors, (528), 32 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:06,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:06,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:09:06,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:08,620 INFO L124 PetriNetUnfolderBase]: 3052/5931 cut-off events. [2024-11-19 14:09:08,620 INFO L125 PetriNetUnfolderBase]: For 28541/28541 co-relation queries the response was YES. [2024-11-19 14:09:08,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21671 conditions, 5931 events. 3052/5931 cut-off events. For 28541/28541 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 44419 event pairs, 182 based on Foata normal form. 234/6153 useless extension candidates. Maximal degree in co-relation 21649. Up to 2053 conditions per place. [2024-11-19 14:09:08,666 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 224 selfloop transitions, 111 changer transitions 3/352 dead transitions. [2024-11-19 14:09:08,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 352 transitions, 2606 flow [2024-11-19 14:09:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-19 14:09:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-19 14:09:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 923 transitions. [2024-11-19 14:09:08,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4909574468085106 [2024-11-19 14:09:08,670 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 339 flow. Second operand 40 states and 923 transitions. [2024-11-19 14:09:08,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 352 transitions, 2606 flow [2024-11-19 14:09:08,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 352 transitions, 2600 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 14:09:08,682 INFO L231 Difference]: Finished difference. Result has 117 places, 180 transitions, 1842 flow [2024-11-19 14:09:08,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1842, PETRI_PLACES=117, PETRI_TRANSITIONS=180} [2024-11-19 14:09:08,682 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 70 predicate places. [2024-11-19 14:09:08,682 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 180 transitions, 1842 flow [2024-11-19 14:09:08,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 16.5) internal successors, (528), 32 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:08,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:08,683 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:08,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:09:08,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 14:09:08,885 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:08,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:08,886 INFO L85 PathProgramCache]: Analyzing trace with hash 257360823, now seen corresponding path program 1 times [2024-11-19 14:09:08,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:08,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451597357] [2024-11-19 14:09:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:08,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:10,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:10,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451597357] [2024-11-19 14:09:10,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451597357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:10,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288757925] [2024-11-19 14:09:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:09:10,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:10,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:10,105 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:10,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:09:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:10,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 14:09:10,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:10,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:10,474 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-19 14:09:10,475 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 27 treesize of output 15 [2024-11-19 14:09:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:10,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288757925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:10,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:10,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 4] total 22 [2024-11-19 14:09:10,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907011542] [2024-11-19 14:09:10,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:10,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 14:09:10,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:10,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 14:09:10,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-11-19 14:09:10,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:09:10,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 180 transitions, 1842 flow. Second operand has 24 states, 24 states have (on average 16.708333333333332) internal successors, (401), 24 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:10,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:10,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:09:10,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:12,220 INFO L124 PetriNetUnfolderBase]: 3568/7052 cut-off events. [2024-11-19 14:09:12,220 INFO L125 PetriNetUnfolderBase]: For 79859/79859 co-relation queries the response was YES. [2024-11-19 14:09:12,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32977 conditions, 7052 events. 3568/7052 cut-off events. For 79859/79859 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 55382 event pairs, 279 based on Foata normal form. 396/7425 useless extension candidates. Maximal degree in co-relation 32942. Up to 2419 conditions per place. [2024-11-19 14:09:12,285 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 203 selfloop transitions, 72 changer transitions 4/293 dead transitions. [2024-11-19 14:09:12,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 293 transitions, 3285 flow [2024-11-19 14:09:12,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 14:09:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 14:09:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 431 transitions. [2024-11-19 14:09:12,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45851063829787236 [2024-11-19 14:09:12,288 INFO L175 Difference]: Start difference. First operand has 117 places, 180 transitions, 1842 flow. Second operand 20 states and 431 transitions. [2024-11-19 14:09:12,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 293 transitions, 3285 flow [2024-11-19 14:09:12,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 293 transitions, 2650 flow, removed 312 selfloop flow, removed 5 redundant places. [2024-11-19 14:09:12,344 INFO L231 Difference]: Finished difference. Result has 137 places, 189 transitions, 1650 flow [2024-11-19 14:09:12,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1650, PETRI_PLACES=137, PETRI_TRANSITIONS=189} [2024-11-19 14:09:12,345 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 90 predicate places. [2024-11-19 14:09:12,345 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 189 transitions, 1650 flow [2024-11-19 14:09:12,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.708333333333332) internal successors, (401), 24 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:12,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:12,345 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] [2024-11-19 14:09:12,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 14:09:12,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 14:09:12,550 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:12,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:12,550 INFO L85 PathProgramCache]: Analyzing trace with hash -997958886, now seen corresponding path program 2 times [2024-11-19 14:09:12,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:12,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305822874] [2024-11-19 14:09:12,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:12,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:12,574 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:12,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:12,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:12,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305822874] [2024-11-19 14:09:12,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305822874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:12,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260874317] [2024-11-19 14:09:12,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:12,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:12,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:12,870 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:12,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:09:12,957 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:12,957 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:12,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-19 14:09:12,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:13,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:09:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:13,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:14,058 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 79 treesize of output 71 [2024-11-19 14:09:14,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:14,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 142 treesize of output 139 [2024-11-19 14:09:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:14,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260874317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:14,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:14,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2024-11-19 14:09:14,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527430365] [2024-11-19 14:09:14,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:14,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 14:09:14,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:14,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 14:09:14,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-11-19 14:09:14,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:09:14,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 189 transitions, 1650 flow. Second operand has 31 states, 31 states have (on average 16.548387096774192) internal successors, (513), 31 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:14,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:14,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:09:14,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:20,766 INFO L124 PetriNetUnfolderBase]: 6354/13197 cut-off events. [2024-11-19 14:09:20,766 INFO L125 PetriNetUnfolderBase]: For 185078/185078 co-relation queries the response was YES. [2024-11-19 14:09:20,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60557 conditions, 13197 events. 6354/13197 cut-off events. For 185078/185078 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 116564 event pairs, 239 based on Foata normal form. 1416/14575 useless extension candidates. Maximal degree in co-relation 60515. Up to 2893 conditions per place. [2024-11-19 14:09:20,877 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 435 selfloop transitions, 395 changer transitions 10/854 dead transitions. [2024-11-19 14:09:20,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 854 transitions, 8726 flow [2024-11-19 14:09:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-19 14:09:20,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2024-11-19 14:09:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 1927 transitions. [2024-11-19 14:09:20,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-11-19 14:09:20,882 INFO L175 Difference]: Start difference. First operand has 137 places, 189 transitions, 1650 flow. Second operand 86 states and 1927 transitions. [2024-11-19 14:09:20,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 854 transitions, 8726 flow [2024-11-19 14:09:21,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 854 transitions, 8365 flow, removed 100 selfloop flow, removed 11 redundant places. [2024-11-19 14:09:21,046 INFO L231 Difference]: Finished difference. Result has 224 places, 490 transitions, 6874 flow [2024-11-19 14:09:21,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=6874, PETRI_PLACES=224, PETRI_TRANSITIONS=490} [2024-11-19 14:09:21,048 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 177 predicate places. [2024-11-19 14:09:21,048 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 490 transitions, 6874 flow [2024-11-19 14:09:21,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 16.548387096774192) internal successors, (513), 31 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:21,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:21,048 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] [2024-11-19 14:09:21,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:21,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 14:09:21,253 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:21,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2040948325, now seen corresponding path program 2 times [2024-11-19 14:09:21,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:21,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755554930] [2024-11-19 14:09:21,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:21,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:21,281 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:21,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:22,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:22,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755554930] [2024-11-19 14:09:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755554930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:22,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067652728] [2024-11-19 14:09:22,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:09:22,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:22,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:22,251 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:22,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:09:22,339 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:09:22,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:22,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 14:09:22,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:22,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:09:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:22,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:23,671 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 79 treesize of output 71 [2024-11-19 14:09:23,720 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-19 14:09:23,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 143 [2024-11-19 14:09:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:24,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067652728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:24,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:24,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 31 [2024-11-19 14:09:24,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983688678] [2024-11-19 14:09:24,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:24,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 14:09:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 14:09:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 14:09:24,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:09:24,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 490 transitions, 6874 flow. Second operand has 33 states, 33 states have (on average 16.454545454545453) internal successors, (543), 33 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:24,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:24,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:09:24,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:30,103 INFO L124 PetriNetUnfolderBase]: 6660/13593 cut-off events. [2024-11-19 14:09:30,103 INFO L125 PetriNetUnfolderBase]: For 187199/187199 co-relation queries the response was YES. [2024-11-19 14:09:30,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69097 conditions, 13593 events. 6660/13593 cut-off events. For 187199/187199 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 113313 event pairs, 827 based on Foata normal form. 396/13927 useless extension candidates. Maximal degree in co-relation 69042. Up to 7156 conditions per place. [2024-11-19 14:09:30,217 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 544 selfloop transitions, 125 changer transitions 23/706 dead transitions. [2024-11-19 14:09:30,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 706 transitions, 10255 flow [2024-11-19 14:09:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-19 14:09:30,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-19 14:09:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 872 transitions. [2024-11-19 14:09:30,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45251686559418786 [2024-11-19 14:09:30,222 INFO L175 Difference]: Start difference. First operand has 224 places, 490 transitions, 6874 flow. Second operand 41 states and 872 transitions. [2024-11-19 14:09:30,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 706 transitions, 10255 flow [2024-11-19 14:09:30,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 706 transitions, 6626 flow, removed 1792 selfloop flow, removed 17 redundant places. [2024-11-19 14:09:30,621 INFO L231 Difference]: Finished difference. Result has 260 places, 491 transitions, 5079 flow [2024-11-19 14:09:30,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4015, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=5079, PETRI_PLACES=260, PETRI_TRANSITIONS=491} [2024-11-19 14:09:30,623 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 213 predicate places. [2024-11-19 14:09:30,623 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 491 transitions, 5079 flow [2024-11-19 14:09:30,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 16.454545454545453) internal successors, (543), 33 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:30,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:30,624 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:30,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 14:09:30,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:30,828 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:30,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:30,829 INFO L85 PathProgramCache]: Analyzing trace with hash 363039862, now seen corresponding path program 3 times [2024-11-19 14:09:30,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:30,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202887710] [2024-11-19 14:09:30,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:09:30,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:30,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 14:09:30,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:30,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:30,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202887710] [2024-11-19 14:09:30,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202887710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:30,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596400799] [2024-11-19 14:09:30,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:09:30,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:30,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:30,992 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:30,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:09:31,077 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 14:09:31,077 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:31,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 14:09:31,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:31,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:31,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:31,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-19 14:09:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:31,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596400799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:31,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:31,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-19 14:09:31,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434628170] [2024-11-19 14:09:31,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:31,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 14:09:31,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 14:09:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-19 14:09:31,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-19 14:09:31,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 491 transitions, 5079 flow. Second operand has 14 states, 14 states have (on average 20.0) internal successors, (280), 14 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:31,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:31,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-19 14:09:31,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:34,904 INFO L124 PetriNetUnfolderBase]: 6918/14199 cut-off events. [2024-11-19 14:09:34,904 INFO L125 PetriNetUnfolderBase]: For 73346/73346 co-relation queries the response was YES. [2024-11-19 14:09:34,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53888 conditions, 14199 events. 6918/14199 cut-off events. For 73346/73346 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 119606 event pairs, 371 based on Foata normal form. 108/14271 useless extension candidates. Maximal degree in co-relation 53824. Up to 7417 conditions per place. [2024-11-19 14:09:35,031 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 450 selfloop transitions, 110 changer transitions 4/578 dead transitions. [2024-11-19 14:09:35,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 578 transitions, 6700 flow [2024-11-19 14:09:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:09:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:09:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-11-19 14:09:35,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5435203094777563 [2024-11-19 14:09:35,033 INFO L175 Difference]: Start difference. First operand has 260 places, 491 transitions, 5079 flow. Second operand 11 states and 281 transitions. [2024-11-19 14:09:35,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 578 transitions, 6700 flow [2024-11-19 14:09:35,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 578 transitions, 6552 flow, removed 45 selfloop flow, removed 18 redundant places. [2024-11-19 14:09:35,395 INFO L231 Difference]: Finished difference. Result has 255 places, 508 transitions, 5477 flow [2024-11-19 14:09:35,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4920, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5477, PETRI_PLACES=255, PETRI_TRANSITIONS=508} [2024-11-19 14:09:35,396 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 208 predicate places. [2024-11-19 14:09:35,396 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 508 transitions, 5477 flow [2024-11-19 14:09:35,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.0) internal successors, (280), 14 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:35,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:35,397 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:35,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 14:09:35,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:35,598 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:35,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:35,598 INFO L85 PathProgramCache]: Analyzing trace with hash -764937735, now seen corresponding path program 4 times [2024-11-19 14:09:35,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:35,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408289030] [2024-11-19 14:09:35,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 14:09:35,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:35,631 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 14:09:35,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:38,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408289030] [2024-11-19 14:09:38,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408289030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829269055] [2024-11-19 14:09:38,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 14:09:38,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:38,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:38,026 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:38,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 14:09:38,111 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 14:09:38,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:38,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 14:09:38,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:09:38,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:38,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:09:38,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-19 14:09:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:09:38,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829269055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:38,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:38,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 4] total 29 [2024-11-19 14:09:38,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755415979] [2024-11-19 14:09:38,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:38,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 14:09:38,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:38,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 14:09:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2024-11-19 14:09:39,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:09:39,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 508 transitions, 5477 flow. Second operand has 31 states, 31 states have (on average 16.741935483870968) internal successors, (519), 31 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:39,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:39,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:09:39,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:42,637 INFO L124 PetriNetUnfolderBase]: 7224/14919 cut-off events. [2024-11-19 14:09:42,638 INFO L125 PetriNetUnfolderBase]: For 87110/87110 co-relation queries the response was YES. [2024-11-19 14:09:42,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58478 conditions, 14919 events. 7224/14919 cut-off events. For 87110/87110 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 128385 event pairs, 415 based on Foata normal form. 162/15034 useless extension candidates. Maximal degree in co-relation 58408. Up to 7249 conditions per place. [2024-11-19 14:09:42,784 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 468 selfloop transitions, 123 changer transitions 5/610 dead transitions. [2024-11-19 14:09:42,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 610 transitions, 7163 flow [2024-11-19 14:09:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 14:09:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 14:09:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 477 transitions. [2024-11-19 14:09:42,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4412580943570768 [2024-11-19 14:09:42,787 INFO L175 Difference]: Start difference. First operand has 255 places, 508 transitions, 5477 flow. Second operand 23 states and 477 transitions. [2024-11-19 14:09:42,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 610 transitions, 7163 flow [2024-11-19 14:09:43,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 610 transitions, 6984 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-11-19 14:09:43,383 INFO L231 Difference]: Finished difference. Result has 273 places, 514 transitions, 5738 flow [2024-11-19 14:09:43,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5245, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5738, PETRI_PLACES=273, PETRI_TRANSITIONS=514} [2024-11-19 14:09:43,384 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 226 predicate places. [2024-11-19 14:09:43,384 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 514 transitions, 5738 flow [2024-11-19 14:09:43,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 16.741935483870968) internal successors, (519), 31 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:43,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:43,384 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:43,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 14:09:43,588 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,SelfDestructingSolverStorable20 [2024-11-19 14:09:43,589 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:43,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:43,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2106971034, now seen corresponding path program 5 times [2024-11-19 14:09:43,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:43,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338443452] [2024-11-19 14:09:43,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 14:09:43,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:43,611 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 14:09:43,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 14:09:43,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:43,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338443452] [2024-11-19 14:09:43,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338443452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:43,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849983930] [2024-11-19 14:09:43,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 14:09:43,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:43,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:43,701 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:43,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 14:09:43,804 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 14:09:43,804 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:43,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:09:43,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 14:09:43,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:09:44,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849983930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:44,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:44,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5] total 8 [2024-11-19 14:09:44,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66087752] [2024-11-19 14:09:44,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:44,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:09:44,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:44,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:09:44,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:09:44,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-19 14:09:44,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 514 transitions, 5738 flow. Second operand has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:44,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:44,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-19 14:09:44,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:47,749 INFO L124 PetriNetUnfolderBase]: 9774/19768 cut-off events. [2024-11-19 14:09:47,750 INFO L125 PetriNetUnfolderBase]: For 137208/137208 co-relation queries the response was YES. [2024-11-19 14:09:47,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79663 conditions, 19768 events. 9774/19768 cut-off events. For 137208/137208 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 176472 event pairs, 1061 based on Foata normal form. 345/20020 useless extension candidates. Maximal degree in co-relation 79594. Up to 7987 conditions per place. [2024-11-19 14:09:47,944 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 483 selfloop transitions, 228 changer transitions 1/726 dead transitions. [2024-11-19 14:09:47,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 726 transitions, 9325 flow [2024-11-19 14:09:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:09:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:09:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-19 14:09:47,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5829787234042553 [2024-11-19 14:09:47,945 INFO L175 Difference]: Start difference. First operand has 273 places, 514 transitions, 5738 flow. Second operand 5 states and 137 transitions. [2024-11-19 14:09:47,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 726 transitions, 9325 flow [2024-11-19 14:09:48,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 726 transitions, 8999 flow, removed 74 selfloop flow, removed 17 redundant places. [2024-11-19 14:09:48,676 INFO L231 Difference]: Finished difference. Result has 263 places, 613 transitions, 7530 flow [2024-11-19 14:09:48,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5313, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7530, PETRI_PLACES=263, PETRI_TRANSITIONS=613} [2024-11-19 14:09:48,677 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 216 predicate places. [2024-11-19 14:09:48,677 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 613 transitions, 7530 flow [2024-11-19 14:09:48,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:48,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:48,677 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:48,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:48,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:48,878 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:48,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:48,878 INFO L85 PathProgramCache]: Analyzing trace with hash -397575343, now seen corresponding path program 6 times [2024-11-19 14:09:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:48,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484727717] [2024-11-19 14:09:48,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 14:09:48,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:48,896 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 14:09:48,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:49,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:49,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484727717] [2024-11-19 14:09:49,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484727717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214685624] [2024-11-19 14:09:49,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 14:09:49,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:49,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:49,067 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:49,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 14:09:49,156 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 14:09:49,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:09:49,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 14:09:49,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:49,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:49,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214685624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:49,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:49,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 27 [2024-11-19 14:09:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025425509] [2024-11-19 14:09:49,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:49,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 14:09:49,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 14:09:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2024-11-19 14:09:49,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:09:49,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 613 transitions, 7530 flow. Second operand has 28 states, 28 states have (on average 16.964285714285715) internal successors, (475), 28 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:49,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:49,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:09:49,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:51,430 INFO L124 PetriNetUnfolderBase]: 3486/7557 cut-off events. [2024-11-19 14:09:51,430 INFO L125 PetriNetUnfolderBase]: For 69793/69793 co-relation queries the response was YES. [2024-11-19 14:09:51,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34124 conditions, 7557 events. 3486/7557 cut-off events. For 69793/69793 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 61516 event pairs, 449 based on Foata normal form. 30/7559 useless extension candidates. Maximal degree in co-relation 34062. Up to 4963 conditions per place. [2024-11-19 14:09:51,503 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 132 selfloop transitions, 17 changer transitions 51/214 dead transitions. [2024-11-19 14:09:51,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 214 transitions, 2826 flow [2024-11-19 14:09:51,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 14:09:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 14:09:51,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 305 transitions. [2024-11-19 14:09:51,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4326241134751773 [2024-11-19 14:09:51,505 INFO L175 Difference]: Start difference. First operand has 263 places, 613 transitions, 7530 flow. Second operand 15 states and 305 transitions. [2024-11-19 14:09:51,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 214 transitions, 2826 flow [2024-11-19 14:09:51,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 214 transitions, 2637 flow, removed 20 selfloop flow, removed 24 redundant places. [2024-11-19 14:09:51,702 INFO L231 Difference]: Finished difference. Result has 176 places, 158 transitions, 1971 flow [2024-11-19 14:09:51,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1971, PETRI_PLACES=176, PETRI_TRANSITIONS=158} [2024-11-19 14:09:51,703 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 129 predicate places. [2024-11-19 14:09:51,703 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 158 transitions, 1971 flow [2024-11-19 14:09:51,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.964285714285715) internal successors, (475), 28 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:51,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:51,704 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:51,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 14:09:51,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:51,904 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:51,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:51,905 INFO L85 PathProgramCache]: Analyzing trace with hash -816540268, now seen corresponding path program 7 times [2024-11-19 14:09:51,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:51,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801900840] [2024-11-19 14:09:51,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 14:09:51,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:52,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:09:52,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801900840] [2024-11-19 14:09:52,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801900840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:09:52,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508542568] [2024-11-19 14:09:52,551 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 14:09:52,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:09:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:09:52,553 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:09:52,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 14:09:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:09:52,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 14:09:52,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:09:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:53,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:09:53,646 INFO L349 Elim1Store]: treesize reduction 23, result has 53.1 percent of original size [2024-11-19 14:09:53,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 42 [2024-11-19 14:09:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:09:54,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508542568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:09:54,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:09:54,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2024-11-19 14:09:54,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539315640] [2024-11-19 14:09:54,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:09:54,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 14:09:54,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:09:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 14:09:54,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1625, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 14:09:54,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-19 14:09:54,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 158 transitions, 1971 flow. Second operand has 44 states, 44 states have (on average 16.431818181818183) internal successors, (723), 44 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:54,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:09:54,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-19 14:09:54,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:09:58,787 INFO L124 PetriNetUnfolderBase]: 6863/14218 cut-off events. [2024-11-19 14:09:58,787 INFO L125 PetriNetUnfolderBase]: For 193282/193282 co-relation queries the response was YES. [2024-11-19 14:09:58,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66733 conditions, 14218 events. 6863/14218 cut-off events. For 193282/193282 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 126242 event pairs, 412 based on Foata normal form. 654/14850 useless extension candidates. Maximal degree in co-relation 66685. Up to 3423 conditions per place. [2024-11-19 14:09:59,069 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 286 selfloop transitions, 250 changer transitions 13/563 dead transitions. [2024-11-19 14:09:59,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 563 transitions, 7007 flow [2024-11-19 14:09:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-19 14:09:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-19 14:09:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 990 transitions. [2024-11-19 14:09:59,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-11-19 14:09:59,072 INFO L175 Difference]: Start difference. First operand has 176 places, 158 transitions, 1971 flow. Second operand 45 states and 990 transitions. [2024-11-19 14:09:59,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 563 transitions, 7007 flow [2024-11-19 14:09:59,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 563 transitions, 6939 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-11-19 14:09:59,356 INFO L231 Difference]: Finished difference. Result has 201 places, 376 transitions, 5996 flow [2024-11-19 14:09:59,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5996, PETRI_PLACES=201, PETRI_TRANSITIONS=376} [2024-11-19 14:09:59,357 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 154 predicate places. [2024-11-19 14:09:59,357 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 376 transitions, 5996 flow [2024-11-19 14:09:59,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 16.431818181818183) internal successors, (723), 44 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:09:59,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:09:59,357 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:09:59,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 14:09:59,557 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,SelfDestructingSolverStorable23 [2024-11-19 14:09:59,558 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-19 14:09:59,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:09:59,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1450412787, now seen corresponding path program 3 times [2024-11-19 14:09:59,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:09:59,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871211393] [2024-11-19 14:09:59,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:09:59,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:09:59,578 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 14:09:59,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:10:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:00,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:00,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871211393] [2024-11-19 14:10:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871211393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:00,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952551641] [2024-11-19 14:10:00,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:10:00,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:00,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:00,914 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:10:00,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 14:10:00,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 14:10:00,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:10:00,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 14:10:00,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:01,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 14:10:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:01,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:02,397 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 116 treesize of output 104 [2024-11-19 14:10:02,465 INFO L349 Elim1Store]: treesize reduction 10, result has 88.2 percent of original size [2024-11-19 14:10:02,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 319 treesize of output 293