./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.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/chl-word-subst.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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:04:07,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:04:07,853 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:04:07,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:04:07,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:04:07,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:04:07,883 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:04:07,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:04:07,883 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:04:07,884 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:04:07,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:04:07,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:04:07,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:04:07,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:04:07,889 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:04:07,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:04:07,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:04:07,891 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:04:07,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:04:07,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:04:07,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:04:07,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:04:07,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:04:07,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:04:07,895 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:04:07,895 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:04:07,896 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:04:07,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:04:07,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:04:07,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:04:07,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:04:07,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:04:07,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:04:07,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:04:07,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:04:07,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:04:07,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:04:07,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:04:07,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:04:07,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:04:07,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:04:07,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:04:07,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:04:07,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:04:07,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-11-19 14:04:08,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:04:08,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:04:08,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:04:08,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:04:08,176 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:04:08,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-19 14:04:09,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:04:09,725 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:04:09,726 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-19 14:04:09,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb46560ba/062954f3a4f24950b3ae1ee2b228b407/FLAG1f086f267 [2024-11-19 14:04:09,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb46560ba/062954f3a4f24950b3ae1ee2b228b407 [2024-11-19 14:04:09,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:04:09,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:04:09,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:04:09,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:04:09,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:04:09,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:04:09" (1/1) ... [2024-11-19 14:04:09,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450f609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:09, skipping insertion in model container [2024-11-19 14:04:09,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:04:09" (1/1) ... [2024-11-19 14:04:09,777 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:04:09,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:04:09,980 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:04:10,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:04:10,022 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:04:10,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10 WrapperNode [2024-11-19 14:04:10,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:04:10,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:04:10,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:04:10,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:04:10,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,062 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 177 [2024-11-19 14:04:10,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:04:10,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:04:10,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:04:10,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:04:10,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,081 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,097 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [15, 2]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 3 writes are split as follows [3, 0]. [2024-11-19 14:04:10,097 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,116 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:04:10,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:04:10,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:04:10,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:04:10,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (1/1) ... [2024-11-19 14:04:10,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:04:10,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:10,151 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 14:04:10,155 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 14:04:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:04:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:04:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:04:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:04:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:04:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:04:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:04:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:04:10,195 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 14:04:10,283 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:04:10,285 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:04:10,613 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:04:10,614 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:04:10,857 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:04:10,859 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 14:04:10,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:10 BoogieIcfgContainer [2024-11-19 14:04:10,860 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:04:10,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:04:10,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:04:10,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:04:10,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:04:09" (1/3) ... [2024-11-19 14:04:10,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5709d2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:10, skipping insertion in model container [2024-11-19 14:04:10,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:04:10" (2/3) ... [2024-11-19 14:04:10,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5709d2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:04:10, skipping insertion in model container [2024-11-19 14:04:10,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:04:10" (3/3) ... [2024-11-19 14:04:10,868 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-11-19 14:04:10,883 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:04:10,884 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-19 14:04:10,884 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:04:10,935 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:04:10,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 199 flow [2024-11-19 14:04:11,005 INFO L124 PetriNetUnfolderBase]: 15/86 cut-off events. [2024-11-19 14:04:11,005 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:04:11,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 15/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2024-11-19 14:04:11,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 89 transitions, 199 flow [2024-11-19 14:04:11,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 84 transitions, 183 flow [2024-11-19 14:04:11,019 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:04:11,024 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;@1df8bfb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:04:11,025 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-11-19 14:04:11,027 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:04:11,027 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:04:11,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:04:11,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:11,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:04:11,028 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 14:04:11,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:11,033 INFO L85 PathProgramCache]: Analyzing trace with hash 803296, now seen corresponding path program 1 times [2024-11-19 14:04:11,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:11,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011422218] [2024-11-19 14:04:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:11,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:11,293 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 14:04:11,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:11,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011422218] [2024-11-19 14:04:11,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011422218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:11,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:11,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:04:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419733382] [2024-11-19 14:04:11,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:11,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:11,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:11,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-11-19 14:04:11,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 14:04:11,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:11,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-11-19 14:04:11,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:12,015 INFO L124 PetriNetUnfolderBase]: 4003/6628 cut-off events. [2024-11-19 14:04:12,016 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-11-19 14:04:12,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11955 conditions, 6628 events. 4003/6628 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42103 event pairs, 2534 based on Foata normal form. 3/4630 useless extension candidates. Maximal degree in co-relation 11334. Up to 5097 conditions per place. [2024-11-19 14:04:12,113 INFO L140 encePairwiseOnDemand]: 73/89 looper letters, 53 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2024-11-19 14:04:12,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 93 transitions, 327 flow [2024-11-19 14:04:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:12,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-19 14:04:12,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5646067415730337 [2024-11-19 14:04:12,128 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 183 flow. Second operand 4 states and 201 transitions. [2024-11-19 14:04:12,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 93 transitions, 327 flow [2024-11-19 14:04:12,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 93 transitions, 318 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:04:12,140 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 262 flow [2024-11-19 14:04:12,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2024-11-19 14:04:12,145 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2024-11-19 14:04:12,147 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 262 flow [2024-11-19 14:04:12,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 14:04:12,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:12,148 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:04:12,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:04:12,148 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 14:04:12,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:12,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1838053550, now seen corresponding path program 1 times [2024-11-19 14:04:12,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:12,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736822408] [2024-11-19 14:04:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:12,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:12,269 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 14:04:12,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:12,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736822408] [2024-11-19 14:04:12,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736822408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:12,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562453962] [2024-11-19 14:04:12,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:12,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:12,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:12,272 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 14:04:12,274 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 14:04:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:12,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:04:12,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:12,391 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 14:04:12,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:04:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562453962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:12,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:04:12,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:04:12,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960206478] [2024-11-19 14:04:12,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:12,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:04:12,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:12,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:04:12,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:04:12,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-11-19 14:04:12,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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 14:04:12,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:12,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-11-19 14:04:12,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:12,942 INFO L124 PetriNetUnfolderBase]: 4003/6625 cut-off events. [2024-11-19 14:04:12,942 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-19 14:04:12,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 6625 events. 4003/6625 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42105 event pairs, 2534 based on Foata normal form. 3/4632 useless extension candidates. Maximal degree in co-relation 11827. Up to 5082 conditions per place. [2024-11-19 14:04:12,988 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 43 selfloop transitions, 17 changer transitions 0/90 dead transitions. [2024-11-19 14:04:12,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 370 flow [2024-11-19 14:04:12,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:04:12,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:04:12,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-11-19 14:04:12,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4887640449438202 [2024-11-19 14:04:12,993 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 262 flow. Second operand 6 states and 261 transitions. [2024-11-19 14:04:12,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 370 flow [2024-11-19 14:04:12,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:04:12,998 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 284 flow [2024-11-19 14:04:12,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2024-11-19 14:04:13,001 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2024-11-19 14:04:13,002 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 284 flow [2024-11-19 14:04:13,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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 14:04:13,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:13,002 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:04:13,020 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 14:04:13,206 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 14:04:13,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 14:04:13,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1145084438, now seen corresponding path program 1 times [2024-11-19 14:04:13,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:13,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090098599] [2024-11-19 14:04:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:13,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:13,305 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 14:04:13,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:13,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090098599] [2024-11-19 14:04:13,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090098599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:13,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074000864] [2024-11-19 14:04:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:13,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:13,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:13,310 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 14:04:13,312 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 14:04:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:13,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:04:13,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:13,390 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 14:04:13,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:13,424 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 14:04:13,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074000864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:13,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:13,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:04:13,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393079637] [2024-11-19 14:04:13,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:13,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:04:13,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:04:13,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:04:13,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-11-19 14:04:13,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 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 14:04:13,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:13,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-11-19 14:04:13,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:14,037 INFO L124 PetriNetUnfolderBase]: 4012/6661 cut-off events. [2024-11-19 14:04:14,037 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-11-19 14:04:14,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12041 conditions, 6661 events. 4012/6661 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 42549 event pairs, 2534 based on Foata normal form. 9/4674 useless extension candidates. Maximal degree in co-relation 11829. Up to 5097 conditions per place. [2024-11-19 14:04:14,073 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 50 selfloop transitions, 37 changer transitions 0/117 dead transitions. [2024-11-19 14:04:14,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 117 transitions, 632 flow [2024-11-19 14:04:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:04:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:04:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 426 transitions. [2024-11-19 14:04:14,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4786516853932584 [2024-11-19 14:04:14,076 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 284 flow. Second operand 10 states and 426 transitions. [2024-11-19 14:04:14,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 117 transitions, 632 flow [2024-11-19 14:04:14,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 549 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-19 14:04:14,082 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 499 flow [2024-11-19 14:04:14,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=499, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2024-11-19 14:04:14,084 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2024-11-19 14:04:14,084 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 499 flow [2024-11-19 14:04:14,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 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 14:04:14,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:14,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:14,097 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 14:04:14,285 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 14:04:14,285 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 14:04:14,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash -687557227, now seen corresponding path program 1 times [2024-11-19 14:04:14,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:14,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424171346] [2024-11-19 14:04:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:14,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:14,377 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 14:04:14,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:14,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424171346] [2024-11-19 14:04:14,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424171346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:14,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:14,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:14,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474260509] [2024-11-19 14:04:14,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:14,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:14,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:14,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:14,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:14,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-11-19 14:04:14,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:14,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:14,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-11-19 14:04:14,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:15,159 INFO L124 PetriNetUnfolderBase]: 7217/10894 cut-off events. [2024-11-19 14:04:15,159 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-11-19 14:04:15,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20680 conditions, 10894 events. 7217/10894 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 63678 event pairs, 3494 based on Foata normal form. 146/7925 useless extension candidates. Maximal degree in co-relation 20582. Up to 6976 conditions per place. [2024-11-19 14:04:15,210 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 139 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2024-11-19 14:04:15,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 173 transitions, 903 flow [2024-11-19 14:04:15,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-11-19 14:04:15,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7106741573033708 [2024-11-19 14:04:15,212 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 499 flow. Second operand 4 states and 253 transitions. [2024-11-19 14:04:15,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 173 transitions, 903 flow [2024-11-19 14:04:15,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 173 transitions, 866 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 14:04:15,216 INFO L231 Difference]: Finished difference. Result has 92 places, 120 transitions, 491 flow [2024-11-19 14:04:15,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=92, PETRI_TRANSITIONS=120} [2024-11-19 14:04:15,218 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 13 predicate places. [2024-11-19 14:04:15,218 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 120 transitions, 491 flow [2024-11-19 14:04:15,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:15,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:15,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:15,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:04:15,219 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 14:04:15,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:15,219 INFO L85 PathProgramCache]: Analyzing trace with hash 160595052, now seen corresponding path program 1 times [2024-11-19 14:04:15,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:15,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965257202] [2024-11-19 14:04:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:15,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:15,329 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 14:04:15,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:15,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965257202] [2024-11-19 14:04:15,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965257202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:15,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:15,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:15,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550132868] [2024-11-19 14:04:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:15,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:04:15,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:15,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:04:15,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:04:15,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-11-19 14:04:15,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 120 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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 14:04:15,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:15,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-11-19 14:04:15,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:16,635 INFO L124 PetriNetUnfolderBase]: 13551/22409 cut-off events. [2024-11-19 14:04:16,635 INFO L125 PetriNetUnfolderBase]: For 2766/2766 co-relation queries the response was YES. [2024-11-19 14:04:16,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42722 conditions, 22409 events. 13551/22409 cut-off events. For 2766/2766 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 170262 event pairs, 8268 based on Foata normal form. 230/16741 useless extension candidates. Maximal degree in co-relation 42598. Up to 8645 conditions per place. [2024-11-19 14:04:16,911 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 133 selfloop transitions, 11 changer transitions 0/176 dead transitions. [2024-11-19 14:04:16,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 176 transitions, 974 flow [2024-11-19 14:04:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:04:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:04:16,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 321 transitions. [2024-11-19 14:04:16,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.601123595505618 [2024-11-19 14:04:16,912 INFO L175 Difference]: Start difference. First operand has 92 places, 120 transitions, 491 flow. Second operand 6 states and 321 transitions. [2024-11-19 14:04:16,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 176 transitions, 974 flow [2024-11-19 14:04:16,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 176 transitions, 969 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:04:16,921 INFO L231 Difference]: Finished difference. Result has 99 places, 123 transitions, 546 flow [2024-11-19 14:04:16,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=99, PETRI_TRANSITIONS=123} [2024-11-19 14:04:16,923 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2024-11-19 14:04:16,923 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 123 transitions, 546 flow [2024-11-19 14:04:16,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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 14:04:16,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:16,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:16,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:04:16,924 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 14:04:16,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:16,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1245841916, now seen corresponding path program 1 times [2024-11-19 14:04:16,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:16,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867451154] [2024-11-19 14:04:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:16,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:16,976 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 14:04:16,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:16,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867451154] [2024-11-19 14:04:16,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867451154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:16,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:16,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:16,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633461403] [2024-11-19 14:04:16,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:16,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:16,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:16,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-11-19 14:04:16,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 123 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 14:04:16,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:16,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-11-19 14:04:16,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:18,886 INFO L124 PetriNetUnfolderBase]: 22204/33004 cut-off events. [2024-11-19 14:04:18,886 INFO L125 PetriNetUnfolderBase]: For 4095/4455 co-relation queries the response was YES. [2024-11-19 14:04:18,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66417 conditions, 33004 events. 22204/33004 cut-off events. For 4095/4455 co-relation queries the response was YES. Maximal size of possible extension queue 1054. Compared 217922 event pairs, 10634 based on Foata normal form. 448/25807 useless extension candidates. Maximal degree in co-relation 66288. Up to 21124 conditions per place. [2024-11-19 14:04:19,073 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 145 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2024-11-19 14:04:19,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 181 transitions, 990 flow [2024-11-19 14:04:19,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-19 14:04:19,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7050561797752809 [2024-11-19 14:04:19,078 INFO L175 Difference]: Start difference. First operand has 99 places, 123 transitions, 546 flow. Second operand 4 states and 251 transitions. [2024-11-19 14:04:19,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 181 transitions, 990 flow [2024-11-19 14:04:19,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 181 transitions, 987 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:04:19,085 INFO L231 Difference]: Finished difference. Result has 103 places, 126 transitions, 572 flow [2024-11-19 14:04:19,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=572, PETRI_PLACES=103, PETRI_TRANSITIONS=126} [2024-11-19 14:04:19,087 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 24 predicate places. [2024-11-19 14:04:19,087 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 126 transitions, 572 flow [2024-11-19 14:04:19,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 14:04:19,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:19,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:19,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:04:19,088 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 14:04:19,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash 683480183, now seen corresponding path program 1 times [2024-11-19 14:04:19,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:19,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946978573] [2024-11-19 14:04:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:19,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:19,161 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 14:04:19,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:19,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946978573] [2024-11-19 14:04:19,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946978573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:19,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:19,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:04:19,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459146078] [2024-11-19 14:04:19,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:19,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:19,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:19,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:19,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-11-19 14:04:19,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 14:04:19,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:19,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-11-19 14:04:19,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:23,182 INFO L124 PetriNetUnfolderBase]: 39672/66276 cut-off events. [2024-11-19 14:04:23,183 INFO L125 PetriNetUnfolderBase]: For 18635/18707 co-relation queries the response was YES. [2024-11-19 14:04:23,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135373 conditions, 66276 events. 39672/66276 cut-off events. For 18635/18707 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 578843 event pairs, 24248 based on Foata normal form. 656/54034 useless extension candidates. Maximal degree in co-relation 135157. Up to 24784 conditions per place. [2024-11-19 14:04:23,626 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 162 selfloop transitions, 7 changer transitions 0/202 dead transitions. [2024-11-19 14:04:23,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 202 transitions, 1252 flow [2024-11-19 14:04:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:04:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:04:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 290 transitions. [2024-11-19 14:04:23,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.651685393258427 [2024-11-19 14:04:23,628 INFO L175 Difference]: Start difference. First operand has 103 places, 126 transitions, 572 flow. Second operand 5 states and 290 transitions. [2024-11-19 14:04:23,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 202 transitions, 1252 flow [2024-11-19 14:04:23,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 202 transitions, 1247 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:04:23,657 INFO L231 Difference]: Finished difference. Result has 109 places, 130 transitions, 640 flow [2024-11-19 14:04:23,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=640, PETRI_PLACES=109, PETRI_TRANSITIONS=130} [2024-11-19 14:04:23,658 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 30 predicate places. [2024-11-19 14:04:23,658 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 130 transitions, 640 flow [2024-11-19 14:04:23,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 14:04:23,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:23,658 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:23,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:04:23,658 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 14:04:23,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:23,659 INFO L85 PathProgramCache]: Analyzing trace with hash 33638896, now seen corresponding path program 1 times [2024-11-19 14:04:23,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:23,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348165147] [2024-11-19 14:04:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:23,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:23,744 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 14:04:23,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:23,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348165147] [2024-11-19 14:04:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348165147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:23,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:23,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:23,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589160583] [2024-11-19 14:04:23,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:23,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:04:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:04:23,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:04:23,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-11-19 14:04:23,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 130 transitions, 640 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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 14:04:23,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:23,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-11-19 14:04:23,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:31,676 INFO L124 PetriNetUnfolderBase]: 82740/136532 cut-off events. [2024-11-19 14:04:31,677 INFO L125 PetriNetUnfolderBase]: For 25636/25780 co-relation queries the response was YES. [2024-11-19 14:04:32,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273066 conditions, 136532 events. 82740/136532 cut-off events. For 25636/25780 co-relation queries the response was YES. Maximal size of possible extension queue 5112. Compared 1284951 event pairs, 50552 based on Foata normal form. 920/108362 useless extension candidates. Maximal degree in co-relation 272848. Up to 52400 conditions per place. [2024-11-19 14:04:32,986 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 125 selfloop transitions, 13 changer transitions 0/173 dead transitions. [2024-11-19 14:04:32,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 173 transitions, 1032 flow [2024-11-19 14:04:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:04:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:04:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 278 transitions. [2024-11-19 14:04:32,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6247191011235955 [2024-11-19 14:04:32,988 INFO L175 Difference]: Start difference. First operand has 109 places, 130 transitions, 640 flow. Second operand 5 states and 278 transitions. [2024-11-19 14:04:32,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 173 transitions, 1032 flow [2024-11-19 14:04:33,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 173 transitions, 1030 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 14:04:33,057 INFO L231 Difference]: Finished difference. Result has 115 places, 131 transitions, 684 flow [2024-11-19 14:04:33,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=684, PETRI_PLACES=115, PETRI_TRANSITIONS=131} [2024-11-19 14:04:33,058 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 36 predicate places. [2024-11-19 14:04:33,058 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 131 transitions, 684 flow [2024-11-19 14:04:33,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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 14:04:33,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:33,059 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:33,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:04:33,059 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 14:04:33,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:33,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1364178863, now seen corresponding path program 1 times [2024-11-19 14:04:33,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:33,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43525229] [2024-11-19 14:04:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:33,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:33,170 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 14:04:33,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:33,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43525229] [2024-11-19 14:04:33,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43525229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:33,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550439256] [2024-11-19 14:04:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:33,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:33,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:33,175 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 14:04:33,178 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 14:04:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:33,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:04:33,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:33,313 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 14:04:33,313 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:04:33,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550439256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:33,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:04:33,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-19 14:04:33,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508927945] [2024-11-19 14:04:33,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:33,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:04:33,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:33,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:04:33,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:04:33,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 89 [2024-11-19 14:04:33,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 131 transitions, 684 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:33,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:33,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 89 [2024-11-19 14:04:33,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:41,084 INFO L124 PetriNetUnfolderBase]: 74320/124980 cut-off events. [2024-11-19 14:04:41,084 INFO L125 PetriNetUnfolderBase]: For 32531/32675 co-relation queries the response was YES. [2024-11-19 14:04:41,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250845 conditions, 124980 events. 74320/124980 cut-off events. For 32531/32675 co-relation queries the response was YES. Maximal size of possible extension queue 4401. Compared 1182935 event pairs, 46544 based on Foata normal form. 1496/101512 useless extension candidates. Maximal degree in co-relation 250620. Up to 92978 conditions per place. [2024-11-19 14:04:42,136 INFO L140 encePairwiseOnDemand]: 87/89 looper letters, 92 selfloop transitions, 1 changer transitions 0/129 dead transitions. [2024-11-19 14:04:42,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 129 transitions, 856 flow [2024-11-19 14:04:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:04:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:04:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-19 14:04:42,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6104868913857678 [2024-11-19 14:04:42,138 INFO L175 Difference]: Start difference. First operand has 115 places, 131 transitions, 684 flow. Second operand 3 states and 163 transitions. [2024-11-19 14:04:42,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 129 transitions, 856 flow [2024-11-19 14:04:42,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 129 transitions, 828 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:04:42,204 INFO L231 Difference]: Finished difference. Result has 111 places, 129 transitions, 644 flow [2024-11-19 14:04:42,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=644, PETRI_PLACES=111, PETRI_TRANSITIONS=129} [2024-11-19 14:04:42,204 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2024-11-19 14:04:42,204 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 129 transitions, 644 flow [2024-11-19 14:04:42,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:04:42,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:42,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:42,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 14:04:42,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:42,406 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 14:04:42,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:42,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1042806662, now seen corresponding path program 1 times [2024-11-19 14:04:42,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:42,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026779922] [2024-11-19 14:04:42,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:42,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:42,475 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 14:04:42,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:42,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026779922] [2024-11-19 14:04:42,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026779922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:42,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:42,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:42,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821071472] [2024-11-19 14:04:42,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:42,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:04:42,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:42,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:04:42,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:04:42,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-11-19 14:04:42,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 129 transitions, 644 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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 14:04:42,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:42,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-11-19 14:04:42,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand