./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-12 00:03:06,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:03:06,987 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:03:06,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:03:06,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:03:07,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:03:07,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:03:07,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:03:07,022 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:03:07,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:03:07,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:03:07,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:03:07,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:03:07,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:03:07,026 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:03:07,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:03:07,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:03:07,027 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:03:07,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:03:07,028 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:03:07,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:03:07,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:03:07,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:03:07,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:03:07,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:03:07,031 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:03:07,031 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:03:07,032 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:03:07,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:03:07,032 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:03:07,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:03:07,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:03:07,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:03:07,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:03:07,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:07,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:03:07,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:03:07,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:03:07,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:03:07,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:03:07,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:03:07,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:03:07,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:03:07,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:03:07,036 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-10-12 00:03:07,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:03:07,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:03:07,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:03:07,298 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:03:07,299 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:03:07,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-12 00:03:08,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:03:08,979 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:03:08,979 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-12 00:03:08,990 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8f1a6b1e3/19fce89f17b44e62a50e2f20da1a8ef0/FLAGbface6133 [2024-10-12 00:03:09,011 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8f1a6b1e3/19fce89f17b44e62a50e2f20da1a8ef0 [2024-10-12 00:03:09,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:03:09,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:03:09,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:09,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:03:09,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:03:09,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@648577c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09, skipping insertion in model container [2024-10-12 00:03:09,029 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,059 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:03:09,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:09,349 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:03:09,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:03:09,460 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:03:09,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09 WrapperNode [2024-10-12 00:03:09,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:03:09,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:09,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:03:09,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:03:09,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,541 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 177 [2024-10-12 00:03:09,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:03:09,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:03:09,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:03:09,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:03:09,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,558 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,574 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-12 00:03:09,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:03:09,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:03:09,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:03:09,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:03:09,601 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (1/1) ... [2024-10-12 00:03:09,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:03:09,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:09,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:03:09,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:03:09,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:03:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:03:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:03:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:03:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:03:09,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:03:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:03:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:03:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:03:09,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:03:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:03:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:03:09,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:03:09,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:03:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:03:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:03:09,702 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:03:09,850 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:03:09,853 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:03:10,363 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:03:10,363 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:03:10,721 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:03:10,721 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-12 00:03:10,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:10 BoogieIcfgContainer [2024-10-12 00:03:10,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:03:10,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:03:10,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:03:10,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:03:10,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:03:09" (1/3) ... [2024-10-12 00:03:10,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a1f0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:10, skipping insertion in model container [2024-10-12 00:03:10,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:09" (2/3) ... [2024-10-12 00:03:10,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a1f0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:10, skipping insertion in model container [2024-10-12 00:03:10,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:10" (3/3) ... [2024-10-12 00:03:10,737 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-10-12 00:03:10,753 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:03:10,754 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-12 00:03:10,754 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:03:10,829 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:03:10,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 199 flow [2024-10-12 00:03:10,921 INFO L124 PetriNetUnfolderBase]: 15/86 cut-off events. [2024-10-12 00:03:10,921 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:03:10,927 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. [2024-10-12 00:03:10,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 89 transitions, 199 flow [2024-10-12 00:03:10,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 84 transitions, 183 flow [2024-10-12 00:03:10,941 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:03:10,950 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;@319cbf7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:03:10,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-10-12 00:03:10,954 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:03:10,954 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:03:10,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:03:10,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:10,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:03:10,956 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-12 00:03:10,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash 803296, now seen corresponding path program 1 times [2024-10-12 00:03:10,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:10,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678097476] [2024-10-12 00:03:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:10,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:11,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:11,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678097476] [2024-10-12 00:03:11,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678097476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:11,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:11,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:11,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987798614] [2024-10-12 00:03:11,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:11,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:11,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:11,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:11,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-10-12 00:03:11,241 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) [2024-10-12 00:03:11,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:11,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-10-12 00:03:11,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:12,141 INFO L124 PetriNetUnfolderBase]: 4000/6613 cut-off events. [2024-10-12 00:03:12,142 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2024-10-12 00:03:12,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11928 conditions, 6613 events. 4000/6613 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42000 event pairs, 2534 based on Foata normal form. 3/4618 useless extension candidates. Maximal degree in co-relation 11334. Up to 5081 conditions per place. [2024-10-12 00:03:12,208 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 43 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2024-10-12 00:03:12,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 279 flow [2024-10-12 00:03:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:12,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-10-12 00:03:12,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224719101123596 [2024-10-12 00:03:12,225 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 183 flow. Second operand 4 states and 186 transitions. [2024-10-12 00:03:12,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 279 flow [2024-10-12 00:03:12,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 270 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:03:12,240 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 184 flow [2024-10-12 00:03:12,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2024-10-12 00:03:12,246 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -5 predicate places. [2024-10-12 00:03:12,247 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 184 flow [2024-10-12 00:03:12,247 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) [2024-10-12 00:03:12,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:12,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-12 00:03:12,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:03:12,248 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-12 00:03:12,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:12,248 INFO L85 PathProgramCache]: Analyzing trace with hash 24902940, now seen corresponding path program 1 times [2024-10-12 00:03:12,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:12,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969189399] [2024-10-12 00:03:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:12,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:12,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:12,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969189399] [2024-10-12 00:03:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969189399] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:12,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:12,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982163186] [2024-10-12 00:03:12,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:12,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:12,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:12,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-10-12 00:03:12,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 184 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) [2024-10-12 00:03:12,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:12,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-10-12 00:03:12,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:12,941 INFO L124 PetriNetUnfolderBase]: 4003/6625 cut-off events. [2024-10-12 00:03:12,941 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-12 00:03:12,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11881 conditions, 6625 events. 4003/6625 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42108 event pairs, 2534 based on Foata normal form. 3/4634 useless extension candidates. Maximal degree in co-relation 11813. Up to 5094 conditions per place. [2024-10-12 00:03:12,985 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 50 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-10-12 00:03:12,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 90 transitions, 336 flow [2024-10-12 00:03:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-10-12 00:03:12,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.547752808988764 [2024-10-12 00:03:12,989 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 184 flow. Second operand 4 states and 195 transitions. [2024-10-12 00:03:12,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 90 transitions, 336 flow [2024-10-12 00:03:12,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 306 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:03:12,994 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 250 flow [2024-10-12 00:03:12,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2024-10-12 00:03:12,996 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-10-12 00:03:12,996 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 250 flow [2024-10-12 00:03:12,997 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) [2024-10-12 00:03:12,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:12,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:03:12,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:03:12,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-12 00:03:12,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:13,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1145084438, now seen corresponding path program 1 times [2024-10-12 00:03:13,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:13,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961574142] [2024-10-12 00:03:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:13,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:13,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:13,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961574142] [2024-10-12 00:03:13,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961574142] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:03:13,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329419201] [2024-10-12 00:03:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:13,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:13,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:03:13,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:03:13,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:03:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:13,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:03:13,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:03:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:13,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:03:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:13,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329419201] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:03:13,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:03:13,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-12 00:03:13,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037686917] [2024-10-12 00:03:13,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:03:13,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 00:03:13,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:13,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 00:03:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:03:13,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-10-12 00:03:13,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 250 flow. Second operand has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:13,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:13,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-10-12 00:03:13,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:13,894 INFO L124 PetriNetUnfolderBase]: 4012/6661 cut-off events. [2024-10-12 00:03:13,894 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-10-12 00:03:13,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11996 conditions, 6661 events. 4012/6661 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 42534 event pairs, 2534 based on Foata normal form. 0/4662 useless extension candidates. Maximal degree in co-relation 11827. Up to 5097 conditions per place. [2024-10-12 00:03:13,932 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 50 selfloop transitions, 37 changer transitions 0/117 dead transitions. [2024-10-12 00:03:13,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 544 flow [2024-10-12 00:03:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:03:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:03:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 426 transitions. [2024-10-12 00:03:13,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4786516853932584 [2024-10-12 00:03:13,936 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 250 flow. Second operand 10 states and 426 transitions. [2024-10-12 00:03:13,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 544 flow [2024-10-12 00:03:13,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 544 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:13,938 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 494 flow [2024-10-12 00:03:13,939 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=10, PETRI_FLOW=494, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2024-10-12 00:03:13,939 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2024-10-12 00:03:13,939 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 494 flow [2024-10-12 00:03:13,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:13,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:13,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:13,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:03:14,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:03:14,145 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-12 00:03:14,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:14,146 INFO L85 PathProgramCache]: Analyzing trace with hash -687557227, now seen corresponding path program 1 times [2024-10-12 00:03:14,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:14,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539852698] [2024-10-12 00:03:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:14,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:14,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:14,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539852698] [2024-10-12 00:03:14,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539852698] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:14,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:14,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:14,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283250469] [2024-10-12 00:03:14,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:14,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:14,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:14,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-10-12 00:03:14,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:14,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:14,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-10-12 00:03:14,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:14,911 INFO L124 PetriNetUnfolderBase]: 7217/10894 cut-off events. [2024-10-12 00:03:14,912 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-10-12 00:03:14,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20679 conditions, 10894 events. 7217/10894 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 63689 event pairs, 3494 based on Foata normal form. 146/7927 useless extension candidates. Maximal degree in co-relation 20584. Up to 6976 conditions per place. [2024-10-12 00:03:14,976 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 139 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2024-10-12 00:03:14,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 173 transitions, 898 flow [2024-10-12 00:03:14,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-10-12 00:03:14,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7106741573033708 [2024-10-12 00:03:14,978 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 494 flow. Second operand 4 states and 253 transitions. [2024-10-12 00:03:14,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 173 transitions, 898 flow [2024-10-12 00:03:14,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 173 transitions, 803 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-10-12 00:03:14,985 INFO L231 Difference]: Finished difference. Result has 90 places, 120 transitions, 428 flow [2024-10-12 00:03:14,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=85, 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=428, PETRI_PLACES=90, PETRI_TRANSITIONS=120} [2024-10-12 00:03:14,985 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2024-10-12 00:03:14,986 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 120 transitions, 428 flow [2024-10-12 00:03:14,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:14,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:14,986 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:14,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:03:14,988 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-12 00:03:14,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash 160595052, now seen corresponding path program 1 times [2024-10-12 00:03:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164935093] [2024-10-12 00:03:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:14,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:15,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:15,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164935093] [2024-10-12 00:03:15,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164935093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:15,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:15,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:15,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816152517] [2024-10-12 00:03:15,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:15,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:15,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:15,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:15,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:15,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-12 00:03:15,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 120 transitions, 428 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) [2024-10-12 00:03:15,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:15,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-12 00:03:15,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:16,691 INFO L124 PetriNetUnfolderBase]: 13551/22409 cut-off events. [2024-10-12 00:03:16,691 INFO L125 PetriNetUnfolderBase]: For 2730/2730 co-relation queries the response was YES. [2024-10-12 00:03:16,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42686 conditions, 22409 events. 13551/22409 cut-off events. For 2730/2730 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 170560 event pairs, 8268 based on Foata normal form. 230/16741 useless extension candidates. Maximal degree in co-relation 42578. Up to 8645 conditions per place. [2024-10-12 00:03:16,828 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 133 selfloop transitions, 11 changer transitions 0/176 dead transitions. [2024-10-12 00:03:16,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 176 transitions, 890 flow [2024-10-12 00:03:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:03:16,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:03:16,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 321 transitions. [2024-10-12 00:03:16,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.601123595505618 [2024-10-12 00:03:16,830 INFO L175 Difference]: Start difference. First operand has 90 places, 120 transitions, 428 flow. Second operand 6 states and 321 transitions. [2024-10-12 00:03:16,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 176 transitions, 890 flow [2024-10-12 00:03:16,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 176 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:16,837 INFO L231 Difference]: Finished difference. Result has 97 places, 123 transitions, 482 flow [2024-10-12 00:03:16,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=89, 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=482, PETRI_PLACES=97, PETRI_TRANSITIONS=123} [2024-10-12 00:03:16,838 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-10-12 00:03:16,838 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 123 transitions, 482 flow [2024-10-12 00:03:16,839 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) [2024-10-12 00:03:16,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:16,839 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:16,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:03:16,839 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-12 00:03:16,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1245841916, now seen corresponding path program 1 times [2024-10-12 00:03:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:16,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291670029] [2024-10-12 00:03:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:16,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291670029] [2024-10-12 00:03:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291670029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509429017] [2024-10-12 00:03:16,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:16,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:16,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:16,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:16,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-10-12 00:03:16,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 482 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) [2024-10-12 00:03:16,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:16,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-10-12 00:03:16,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:19,125 INFO L124 PetriNetUnfolderBase]: 22204/33004 cut-off events. [2024-10-12 00:03:19,125 INFO L125 PetriNetUnfolderBase]: For 4059/4419 co-relation queries the response was YES. [2024-10-12 00:03:19,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66381 conditions, 33004 events. 22204/33004 cut-off events. For 4059/4419 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 216692 event pairs, 10634 based on Foata normal form. 448/25807 useless extension candidates. Maximal degree in co-relation 66268. Up to 21124 conditions per place. [2024-10-12 00:03:19,376 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 145 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2024-10-12 00:03:19,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 181 transitions, 926 flow [2024-10-12 00:03:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:03:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:03:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-10-12 00:03:19,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7050561797752809 [2024-10-12 00:03:19,378 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 482 flow. Second operand 4 states and 251 transitions. [2024-10-12 00:03:19,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 181 transitions, 926 flow [2024-10-12 00:03:19,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 181 transitions, 923 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:19,386 INFO L231 Difference]: Finished difference. Result has 101 places, 126 transitions, 508 flow [2024-10-12 00:03:19,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=96, 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=508, PETRI_PLACES=101, PETRI_TRANSITIONS=126} [2024-10-12 00:03:19,388 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 22 predicate places. [2024-10-12 00:03:19,389 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 126 transitions, 508 flow [2024-10-12 00:03:19,389 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) [2024-10-12 00:03:19,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:19,389 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:19,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:03:19,389 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-12 00:03:19,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:19,390 INFO L85 PathProgramCache]: Analyzing trace with hash 683480183, now seen corresponding path program 1 times [2024-10-12 00:03:19,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:19,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008004724] [2024-10-12 00:03:19,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:19,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:19,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:19,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008004724] [2024-10-12 00:03:19,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008004724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:19,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:19,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:03:19,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409962382] [2024-10-12 00:03:19,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:19,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:19,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:19,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:19,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:19,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-12 00:03:19,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 126 transitions, 508 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) [2024-10-12 00:03:19,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:19,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-12 00:03:19,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:24,009 INFO L124 PetriNetUnfolderBase]: 39672/66276 cut-off events. [2024-10-12 00:03:24,009 INFO L125 PetriNetUnfolderBase]: For 18572/18644 co-relation queries the response was YES. [2024-10-12 00:03:24,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135310 conditions, 66276 events. 39672/66276 cut-off events. For 18572/18644 co-relation queries the response was YES. Maximal size of possible extension queue 2549. Compared 580345 event pairs, 24248 based on Foata normal form. 656/54034 useless extension candidates. Maximal degree in co-relation 135122. Up to 24784 conditions per place. [2024-10-12 00:03:24,547 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 162 selfloop transitions, 7 changer transitions 0/202 dead transitions. [2024-10-12 00:03:24,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 202 transitions, 1145 flow [2024-10-12 00:03:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:24,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 290 transitions. [2024-10-12 00:03:24,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.651685393258427 [2024-10-12 00:03:24,548 INFO L175 Difference]: Start difference. First operand has 101 places, 126 transitions, 508 flow. Second operand 5 states and 290 transitions. [2024-10-12 00:03:24,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 202 transitions, 1145 flow [2024-10-12 00:03:24,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 202 transitions, 1140 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:03:24,584 INFO L231 Difference]: Finished difference. Result has 107 places, 130 transitions, 574 flow [2024-10-12 00:03:24,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=100, 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=574, PETRI_PLACES=107, PETRI_TRANSITIONS=130} [2024-10-12 00:03:24,585 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2024-10-12 00:03:24,585 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 130 transitions, 574 flow [2024-10-12 00:03:24,585 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) [2024-10-12 00:03:24,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:24,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:24,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:03:24,586 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-12 00:03:24,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash 33638896, now seen corresponding path program 1 times [2024-10-12 00:03:24,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:24,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986614245] [2024-10-12 00:03:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:24,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:24,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:24,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986614245] [2024-10-12 00:03:24,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986614245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:24,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:24,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:24,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069188636] [2024-10-12 00:03:24,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:24,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:24,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:24,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:24,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:24,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-12 00:03:24,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 130 transitions, 574 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) [2024-10-12 00:03:24,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:24,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-12 00:03:24,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:34,246 INFO L124 PetriNetUnfolderBase]: 82740/136532 cut-off events. [2024-10-12 00:03:34,247 INFO L125 PetriNetUnfolderBase]: For 25573/25717 co-relation queries the response was YES. [2024-10-12 00:03:35,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273003 conditions, 136532 events. 82740/136532 cut-off events. For 25573/25717 co-relation queries the response was YES. Maximal size of possible extension queue 5039. Compared 1281776 event pairs, 50552 based on Foata normal form. 920/108362 useless extension candidates. Maximal degree in co-relation 272813. Up to 52400 conditions per place. [2024-10-12 00:03:35,912 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 125 selfloop transitions, 13 changer transitions 0/173 dead transitions. [2024-10-12 00:03:35,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 173 transitions, 966 flow [2024-10-12 00:03:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:03:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:03:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 278 transitions. [2024-10-12 00:03:35,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6247191011235955 [2024-10-12 00:03:35,915 INFO L175 Difference]: Start difference. First operand has 107 places, 130 transitions, 574 flow. Second operand 5 states and 278 transitions. [2024-10-12 00:03:35,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 173 transitions, 966 flow [2024-10-12 00:03:36,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 173 transitions, 964 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-12 00:03:36,256 INFO L231 Difference]: Finished difference. Result has 113 places, 131 transitions, 618 flow [2024-10-12 00:03:36,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=107, 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=618, PETRI_PLACES=113, PETRI_TRANSITIONS=131} [2024-10-12 00:03:36,259 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2024-10-12 00:03:36,259 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 131 transitions, 618 flow [2024-10-12 00:03:36,259 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) [2024-10-12 00:03:36,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:36,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:36,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:03:36,261 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-12 00:03:36,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:36,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1042806662, now seen corresponding path program 1 times [2024-10-12 00:03:36,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:36,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991676997] [2024-10-12 00:03:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:36,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:36,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:36,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991676997] [2024-10-12 00:03:36,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991676997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:36,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:36,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:36,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973234574] [2024-10-12 00:03:36,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:36,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:03:36,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:03:36,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:03:36,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 89 [2024-10-12 00:03:36,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 131 transitions, 618 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) [2024-10-12 00:03:36,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:36,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 89 [2024-10-12 00:03:36,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:03:46,297 INFO L124 PetriNetUnfolderBase]: 80092/132544 cut-off events. [2024-10-12 00:03:46,297 INFO L125 PetriNetUnfolderBase]: For 33612/33828 co-relation queries the response was YES. [2024-10-12 00:03:47,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269778 conditions, 132544 events. 80092/132544 cut-off events. For 33612/33828 co-relation queries the response was YES. Maximal size of possible extension queue 4881. Compared 1242285 event pairs, 48548 based on Foata normal form. 560/106872 useless extension candidates. Maximal degree in co-relation 269581. Up to 49475 conditions per place. [2024-10-12 00:03:48,184 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 164 selfloop transitions, 30 changer transitions 0/229 dead transitions. [2024-10-12 00:03:48,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 229 transitions, 1358 flow [2024-10-12 00:03:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:03:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:03:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 423 transitions. [2024-10-12 00:03:48,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5941011235955056 [2024-10-12 00:03:48,187 INFO L175 Difference]: Start difference. First operand has 113 places, 131 transitions, 618 flow. Second operand 8 states and 423 transitions. [2024-10-12 00:03:48,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 229 transitions, 1358 flow [2024-10-12 00:03:48,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 229 transitions, 1333 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:03:48,952 INFO L231 Difference]: Finished difference. Result has 123 places, 155 transitions, 906 flow [2024-10-12 00:03:48,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=906, PETRI_PLACES=123, PETRI_TRANSITIONS=155} [2024-10-12 00:03:48,953 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 44 predicate places. [2024-10-12 00:03:48,953 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 155 transitions, 906 flow [2024-10-12 00:03:48,954 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) [2024-10-12 00:03:48,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:03:48,954 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:03:48,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 00:03:48,954 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-10-12 00:03:48,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:03:48,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1451039184, now seen corresponding path program 1 times [2024-10-12 00:03:48,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:03:48,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586089792] [2024-10-12 00:03:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:03:48,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:03:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:03:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:03:49,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:03:49,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586089792] [2024-10-12 00:03:49,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586089792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:03:49,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:03:49,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:03:49,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717225744] [2024-10-12 00:03:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:03:49,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:03:49,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:03:49,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:03:49,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:03:49,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2024-10-12 00:03:49,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 155 transitions, 906 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:03:49,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:03:49,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2024-10-12 00:03:49,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand