./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d 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-nzb-file-symm.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 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:09:08,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:09:08,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:09:08,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:09:08,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:09:08,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:09:08,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:09:08,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:09:08,856 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:09:08,857 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:09:08,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:09:08,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:09:08,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:09:08,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:09:08,861 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:09:08,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:09:08,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:09:08,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:09:08,863 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:09:08,863 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:09:08,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:09:08,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:09:08,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:09:08,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:09:08,866 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:09:08,866 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:09:08,867 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:09:08,867 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:09:08,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:09:08,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:09:08,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:09:08,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:09:08,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:09:08,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:09:08,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:09:08,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:09:08,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:09:08,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:09:08,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:09:08,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:09:08,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:09:08,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:09:08,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:09:08,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:09:08,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 [2024-11-09 15:09:09,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:09:09,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:09:09,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:09:09,162 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:09:09,162 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:09:09,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2024-11-09 15:09:10,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:09:10,802 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:09:10,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2024-11-09 15:09:10,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13a002523/a9a51cf907ca46a4a8aaa10d2068e7aa/FLAG19ce26c57 [2024-11-09 15:09:10,824 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13a002523/a9a51cf907ca46a4a8aaa10d2068e7aa [2024-11-09 15:09:10,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:09:10,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:09:10,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:09:10,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:09:10,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:09:10,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:09:10" (1/1) ... [2024-11-09 15:09:10,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bbc05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:10, skipping insertion in model container [2024-11-09 15:09:10,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:09:10" (1/1) ... [2024-11-09 15:09:10,863 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:09:11,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:09:11,089 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:09:11,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:09:11,143 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:09:11,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11 WrapperNode [2024-11-09 15:09:11,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:09:11,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:09:11,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:09:11,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:09:11,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,196 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 22, calls inlined = 30, statements flattened = 499 [2024-11-09 15:09:11,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:09:11,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:09:11,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:09:11,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:09:11,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,240 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-09 15:09:11,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:09:11,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:09:11,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:09:11,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:09:11,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (1/1) ... [2024-11-09 15:09:11,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:09:11,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:11,348 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) [2024-11-09 15:09:11,352 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 [2024-11-09 15:09:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:09:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:09:11,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:09:11,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:09:11,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:09:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:09:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:09:11,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:09:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:09:11,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:09:11,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:09:11,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:09:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:09:11,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:09:11,407 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:09:11,543 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:09:11,545 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:09:12,310 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:09:12,310 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:09:12,866 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:09:12,867 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 15:09:12,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:09:12 BoogieIcfgContainer [2024-11-09 15:09:12,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:09:12,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:09:12,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:09:12,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:09:12,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:09:10" (1/3) ... [2024-11-09 15:09:12,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d705a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:09:12, skipping insertion in model container [2024-11-09 15:09:12,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:09:11" (2/3) ... [2024-11-09 15:09:12,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d705a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:09:12, skipping insertion in model container [2024-11-09 15:09:12,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:09:12" (3/3) ... [2024-11-09 15:09:12,879 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2024-11-09 15:09:12,897 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:09:12,897 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-11-09 15:09:12,898 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:09:13,022 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:09:13,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 169 transitions, 352 flow [2024-11-09 15:09:13,118 INFO L124 PetriNetUnfolderBase]: 26/167 cut-off events. [2024-11-09 15:09:13,119 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:09:13,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 167 events. 26/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 829 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2024-11-09 15:09:13,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 169 transitions, 352 flow [2024-11-09 15:09:13,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 166 transitions, 344 flow [2024-11-09 15:09:13,139 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:09:13,146 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;@7c795e60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:09:13,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2024-11-09 15:09:13,150 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:09:13,150 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:09:13,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:09:13,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:13,151 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:09:13,151 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:13,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1512952, now seen corresponding path program 1 times [2024-11-09 15:09:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:13,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999134446] [2024-11-09 15:09:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:13,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:13,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999134446] [2024-11-09 15:09:13,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999134446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:13,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:13,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:13,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663343615] [2024-11-09 15:09:13,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:13,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:13,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:13,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:13,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:13,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-09 15:09:13,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 166 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2024-11-09 15:09:13,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:13,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-09 15:09:13,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:14,472 INFO L124 PetriNetUnfolderBase]: 2890/6519 cut-off events. [2024-11-09 15:09:14,472 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-09 15:09:14,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10784 conditions, 6519 events. 2890/6519 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 58856 event pairs, 1812 based on Foata normal form. 4/5189 useless extension candidates. Maximal degree in co-relation 10584. Up to 4183 conditions per place. [2024-11-09 15:09:14,523 INFO L140 encePairwiseOnDemand]: 154/169 looper letters, 79 selfloop transitions, 7 changer transitions 2/168 dead transitions. [2024-11-09 15:09:14,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 168 transitions, 522 flow [2024-11-09 15:09:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2024-11-09 15:09:14,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6316568047337278 [2024-11-09 15:09:14,542 INFO L175 Difference]: Start difference. First operand has 147 places, 166 transitions, 344 flow. Second operand 4 states and 427 transitions. [2024-11-09 15:09:14,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 168 transitions, 522 flow [2024-11-09 15:09:14,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 168 transitions, 514 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:09:14,556 INFO L231 Difference]: Finished difference. Result has 147 places, 166 transitions, 383 flow [2024-11-09 15:09:14,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=383, PETRI_PLACES=147, PETRI_TRANSITIONS=166} [2024-11-09 15:09:14,564 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 0 predicate places. [2024-11-09 15:09:14,564 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 166 transitions, 383 flow [2024-11-09 15:09:14,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2024-11-09 15:09:14,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:14,566 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:09:14,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:09:14,566 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:14,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2124182453, now seen corresponding path program 1 times [2024-11-09 15:09:14,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:14,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379429776] [2024-11-09 15:09:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:14,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:14,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:14,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379429776] [2024-11-09 15:09:14,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379429776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:14,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733488493] [2024-11-09 15:09:14,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:14,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:14,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:14,781 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) [2024-11-09 15:09:14,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:09:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:14,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:09:14,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:14,936 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:14,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733488493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:14,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:14,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:09:14,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616915628] [2024-11-09 15:09:14,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:14,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:09:14,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:14,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:09:14,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:09:14,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-09 15:09:14,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 166 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 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) [2024-11-09 15:09:14,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:14,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-09 15:09:14,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:15,696 INFO L124 PetriNetUnfolderBase]: 2890/6515 cut-off events. [2024-11-09 15:09:15,697 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-09 15:09:15,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10750 conditions, 6515 events. 2890/6515 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 58786 event pairs, 1812 based on Foata normal form. 2/5186 useless extension candidates. Maximal degree in co-relation 10700. Up to 4172 conditions per place. [2024-11-09 15:09:15,733 INFO L140 encePairwiseOnDemand]: 160/169 looper letters, 72 selfloop transitions, 12 changer transitions 0/164 dead transitions. [2024-11-09 15:09:15,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 164 transitions, 543 flow [2024-11-09 15:09:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:09:15,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:09:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 584 transitions. [2024-11-09 15:09:15,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5759368836291914 [2024-11-09 15:09:15,738 INFO L175 Difference]: Start difference. First operand has 147 places, 166 transitions, 383 flow. Second operand 6 states and 584 transitions. [2024-11-09 15:09:15,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 164 transitions, 543 flow [2024-11-09 15:09:15,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 164 transitions, 543 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:09:15,742 INFO L231 Difference]: Finished difference. Result has 148 places, 164 transitions, 399 flow [2024-11-09 15:09:15,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=399, PETRI_PLACES=148, PETRI_TRANSITIONS=164} [2024-11-09 15:09:15,743 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 1 predicate places. [2024-11-09 15:09:15,743 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 164 transitions, 399 flow [2024-11-09 15:09:15,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 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) [2024-11-09 15:09:15,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:15,744 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:09:15,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:15,945 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 [2024-11-09 15:09:15,946 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:15,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:15,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1425148113, now seen corresponding path program 1 times [2024-11-09 15:09:15,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:15,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410778089] [2024-11-09 15:09:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:15,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:16,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410778089] [2024-11-09 15:09:16,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410778089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:16,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491250752] [2024-11-09 15:09:16,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:16,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:16,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:16,092 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) [2024-11-09 15:09:16,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:09:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:16,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:09:16,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:16,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:09:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:16,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491250752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:09:16,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:09:16,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:09:16,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734878299] [2024-11-09 15:09:16,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:09:16,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:09:16,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:16,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:09:16,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:09:16,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-09 15:09:16,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 164 transitions, 399 flow. Second operand has 12 states, 12 states have (on average 84.08333333333333) internal successors, (1009), 12 states have internal predecessors, (1009), 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) [2024-11-09 15:09:16,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:16,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-09 15:09:16,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:17,244 INFO L124 PetriNetUnfolderBase]: 2896/6539 cut-off events. [2024-11-09 15:09:17,244 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-09 15:09:17,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10844 conditions, 6539 events. 2896/6539 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 59093 event pairs, 1812 based on Foata normal form. 6/5213 useless extension candidates. Maximal degree in co-relation 10702. Up to 4183 conditions per place. [2024-11-09 15:09:17,289 INFO L140 encePairwiseOnDemand]: 160/169 looper letters, 77 selfloop transitions, 25 changer transitions 0/182 dead transitions. [2024-11-09 15:09:17,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 182 transitions, 717 flow [2024-11-09 15:09:17,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:09:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:09:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 938 transitions. [2024-11-09 15:09:17,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5550295857988166 [2024-11-09 15:09:17,292 INFO L175 Difference]: Start difference. First operand has 148 places, 164 transitions, 399 flow. Second operand 10 states and 938 transitions. [2024-11-09 15:09:17,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 182 transitions, 717 flow [2024-11-09 15:09:17,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 182 transitions, 659 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 15:09:17,302 INFO L231 Difference]: Finished difference. Result has 155 places, 182 transitions, 539 flow [2024-11-09 15:09:17,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=539, PETRI_PLACES=155, PETRI_TRANSITIONS=182} [2024-11-09 15:09:17,305 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-11-09 15:09:17,306 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 182 transitions, 539 flow [2024-11-09 15:09:17,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 84.08333333333333) internal successors, (1009), 12 states have internal predecessors, (1009), 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) [2024-11-09 15:09:17,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:17,307 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:17,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:17,508 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 [2024-11-09 15:09:17,508 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:17,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:17,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2088466662, now seen corresponding path program 1 times [2024-11-09 15:09:17,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:17,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079200865] [2024-11-09 15:09:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:17,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:17,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079200865] [2024-11-09 15:09:17,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079200865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:17,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:17,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:17,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521429605] [2024-11-09 15:09:17,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:17,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:09:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:09:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:09:17,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 169 [2024-11-09 15:09:17,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 182 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2024-11-09 15:09:17,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:17,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 169 [2024-11-09 15:09:17,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:18,183 INFO L124 PetriNetUnfolderBase]: 2894/6537 cut-off events. [2024-11-09 15:09:18,183 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-09 15:09:18,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10849 conditions, 6537 events. 2894/6537 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 58947 event pairs, 1812 based on Foata normal form. 2/5209 useless extension candidates. Maximal degree in co-relation 10782. Up to 4192 conditions per place. [2024-11-09 15:09:18,219 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 91 selfloop transitions, 7 changer transitions 0/180 dead transitions. [2024-11-09 15:09:18,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 180 transitions, 725 flow [2024-11-09 15:09:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:09:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:09:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2024-11-09 15:09:18,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6765285996055227 [2024-11-09 15:09:18,222 INFO L175 Difference]: Start difference. First operand has 155 places, 182 transitions, 539 flow. Second operand 3 states and 343 transitions. [2024-11-09 15:09:18,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 180 transitions, 725 flow [2024-11-09 15:09:18,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 180 transitions, 695 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-09 15:09:18,226 INFO L231 Difference]: Finished difference. Result has 154 places, 180 transitions, 513 flow [2024-11-09 15:09:18,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=154, PETRI_TRANSITIONS=180} [2024-11-09 15:09:18,227 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 7 predicate places. [2024-11-09 15:09:18,227 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 180 transitions, 513 flow [2024-11-09 15:09:18,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2024-11-09 15:09:18,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:18,228 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:09:18,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:09:18,228 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:18,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:18,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1604617938, now seen corresponding path program 2 times [2024-11-09 15:09:18,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:18,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092569817] [2024-11-09 15:09:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:09:18,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092569817] [2024-11-09 15:09:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092569817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154013873] [2024-11-09 15:09:18,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:09:18,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:18,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:18,410 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) [2024-11-09 15:09:18,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:09:18,507 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:09:18,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:09:18,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:09:18,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:09:18,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:09:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:09:18,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154013873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:09:18,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:09:18,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-11-09 15:09:18,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088627477] [2024-11-09 15:09:18,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:09:18,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:09:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:09:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:09:18,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-09 15:09:18,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 180 transitions, 513 flow. Second operand has 15 states, 15 states have (on average 84.33333333333333) internal successors, (1265), 15 states have internal predecessors, (1265), 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) [2024-11-09 15:09:18,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:18,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-09 15:09:18,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:19,478 INFO L124 PetriNetUnfolderBase]: 2896/6539 cut-off events. [2024-11-09 15:09:19,479 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-09 15:09:19,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10844 conditions, 6539 events. 2896/6539 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 58917 event pairs, 1812 based on Foata normal form. 2/5211 useless extension candidates. Maximal degree in co-relation 10774. Up to 4175 conditions per place. [2024-11-09 15:09:19,518 INFO L140 encePairwiseOnDemand]: 160/169 looper letters, 69 selfloop transitions, 33 changer transitions 0/182 dead transitions. [2024-11-09 15:09:19,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 182 transitions, 721 flow [2024-11-09 15:09:19,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 15:09:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 15:09:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1183 transitions. [2024-11-09 15:09:19,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-09 15:09:19,524 INFO L175 Difference]: Start difference. First operand has 154 places, 180 transitions, 513 flow. Second operand 13 states and 1183 transitions. [2024-11-09 15:09:19,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 182 transitions, 721 flow [2024-11-09 15:09:19,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 182 transitions, 685 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-09 15:09:19,529 INFO L231 Difference]: Finished difference. Result has 158 places, 182 transitions, 547 flow [2024-11-09 15:09:19,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=547, PETRI_PLACES=158, PETRI_TRANSITIONS=182} [2024-11-09 15:09:19,532 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2024-11-09 15:09:19,532 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 182 transitions, 547 flow [2024-11-09 15:09:19,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.33333333333333) internal successors, (1265), 15 states have internal predecessors, (1265), 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) [2024-11-09 15:09:19,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:19,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:19,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:09:19,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:19,734 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:19,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash -115340577, now seen corresponding path program 1 times [2024-11-09 15:09:19,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:19,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989505000] [2024-11-09 15:09:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:19,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:09:19,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989505000] [2024-11-09 15:09:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989505000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:19,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:19,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445319715] [2024-11-09 15:09:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:19,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:09:19,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:19,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:09:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:09:19,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-09 15:09:19,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 182 transitions, 547 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2024-11-09 15:09:19,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:19,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-09 15:09:19,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:20,799 INFO L124 PetriNetUnfolderBase]: 5153/10831 cut-off events. [2024-11-09 15:09:20,800 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-09 15:09:20,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18528 conditions, 10831 events. 5153/10831 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 95791 event pairs, 2276 based on Foata normal form. 112/9063 useless extension candidates. Maximal degree in co-relation 18362. Up to 4875 conditions per place. [2024-11-09 15:09:20,865 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 160 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2024-11-09 15:09:20,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 238 transitions, 985 flow [2024-11-09 15:09:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:09:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:09:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2024-11-09 15:09:20,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7672583826429981 [2024-11-09 15:09:20,868 INFO L175 Difference]: Start difference. First operand has 158 places, 182 transitions, 547 flow. Second operand 3 states and 389 transitions. [2024-11-09 15:09:20,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 238 transitions, 985 flow [2024-11-09 15:09:20,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 238 transitions, 865 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-11-09 15:09:20,873 INFO L231 Difference]: Finished difference. Result has 149 places, 183 transitions, 445 flow [2024-11-09 15:09:20,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=149, PETRI_TRANSITIONS=183} [2024-11-09 15:09:20,875 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 2 predicate places. [2024-11-09 15:09:20,876 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 183 transitions, 445 flow [2024-11-09 15:09:20,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2024-11-09 15:09:20,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:20,877 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:20,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:09:20,877 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:20,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash -116357444, now seen corresponding path program 1 times [2024-11-09 15:09:20,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:20,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478782998] [2024-11-09 15:09:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:09:20,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:20,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478782998] [2024-11-09 15:09:20,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478782998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:20,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:20,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:09:20,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668422071] [2024-11-09 15:09:20,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:20,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:20,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:20,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:20,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:20,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-09 15:09:20,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 183 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2024-11-09 15:09:20,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:20,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-09 15:09:20,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:22,051 INFO L124 PetriNetUnfolderBase]: 7104/14899 cut-off events. [2024-11-09 15:09:22,052 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-11-09 15:09:22,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25859 conditions, 14899 events. 7104/14899 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 138212 event pairs, 2894 based on Foata normal form. 336/12491 useless extension candidates. Maximal degree in co-relation 9100. Up to 6606 conditions per place. [2024-11-09 15:09:22,131 INFO L140 encePairwiseOnDemand]: 153/169 looper letters, 181 selfloop transitions, 10 changer transitions 0/259 dead transitions. [2024-11-09 15:09:22,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 259 transitions, 981 flow [2024-11-09 15:09:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 470 transitions. [2024-11-09 15:09:22,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952662721893491 [2024-11-09 15:09:22,133 INFO L175 Difference]: Start difference. First operand has 149 places, 183 transitions, 445 flow. Second operand 4 states and 470 transitions. [2024-11-09 15:09:22,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 259 transitions, 981 flow [2024-11-09 15:09:22,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 259 transitions, 979 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:09:22,138 INFO L231 Difference]: Finished difference. Result has 152 places, 187 transitions, 511 flow [2024-11-09 15:09:22,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=511, PETRI_PLACES=152, PETRI_TRANSITIONS=187} [2024-11-09 15:09:22,139 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 5 predicate places. [2024-11-09 15:09:22,139 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 187 transitions, 511 flow [2024-11-09 15:09:22,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2024-11-09 15:09:22,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:22,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:22,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:09:22,141 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:22,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash 687888212, now seen corresponding path program 1 times [2024-11-09 15:09:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:22,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659996357] [2024-11-09 15:09:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:22,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:09:22,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:22,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659996357] [2024-11-09 15:09:22,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659996357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:22,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909404043] [2024-11-09 15:09:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:22,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:22,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:22,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:09:22,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:09:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:22,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:09:22,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:09:22,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:09:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:09:22,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909404043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:09:22,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:09:22,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:09:22,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549272191] [2024-11-09 15:09:22,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:09:22,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 15:09:22,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:22,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 15:09:22,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:09:22,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-09 15:09:22,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 187 transitions, 511 flow. Second operand has 11 states, 11 states have (on average 84.72727272727273) internal successors, (932), 11 states have internal predecessors, (932), 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) [2024-11-09 15:09:22,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:22,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-09 15:09:22,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:23,657 INFO L124 PetriNetUnfolderBase]: 5449/12740 cut-off events. [2024-11-09 15:09:23,657 INFO L125 PetriNetUnfolderBase]: For 1936/2078 co-relation queries the response was YES. [2024-11-09 15:09:23,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22902 conditions, 12740 events. 5449/12740 cut-off events. For 1936/2078 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 124951 event pairs, 3559 based on Foata normal form. 79/10767 useless extension candidates. Maximal degree in co-relation 15845. Up to 7903 conditions per place. [2024-11-09 15:09:23,748 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 79 selfloop transitions, 24 changer transitions 0/183 dead transitions. [2024-11-09 15:09:23,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 183 transitions, 703 flow [2024-11-09 15:09:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:09:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:09:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 671 transitions. [2024-11-09 15:09:23,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5672020287404903 [2024-11-09 15:09:23,751 INFO L175 Difference]: Start difference. First operand has 152 places, 187 transitions, 511 flow. Second operand 7 states and 671 transitions. [2024-11-09 15:09:23,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 183 transitions, 703 flow [2024-11-09 15:09:23,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 183 transitions, 703 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:09:23,783 INFO L231 Difference]: Finished difference. Result has 158 places, 183 transitions, 545 flow [2024-11-09 15:09:23,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=158, PETRI_TRANSITIONS=183} [2024-11-09 15:09:23,784 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2024-11-09 15:09:23,784 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 183 transitions, 545 flow [2024-11-09 15:09:23,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 84.72727272727273) internal successors, (932), 11 states have internal predecessors, (932), 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) [2024-11-09 15:09:23,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:23,786 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:23,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:23,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:23,991 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:23,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:23,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1947019892, now seen corresponding path program 2 times [2024-11-09 15:09:23,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:23,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311588191] [2024-11-09 15:09:23,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:23,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:24,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:24,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311588191] [2024-11-09 15:09:24,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311588191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:24,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160390881] [2024-11-09 15:09:24,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:09:24,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:24,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:24,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:09:24,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:09:24,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:09:24,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:09:24,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:09:24,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 15:09:24,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:09:24,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160390881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:24,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:09:24,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2024-11-09 15:09:24,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898567300] [2024-11-09 15:09:24,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:24,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:24,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:24,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:09:24,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2024-11-09 15:09:24,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 183 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2024-11-09 15:09:24,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:24,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2024-11-09 15:09:24,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:25,324 INFO L124 PetriNetUnfolderBase]: 6295/14332 cut-off events. [2024-11-09 15:09:25,324 INFO L125 PetriNetUnfolderBase]: For 2288/2330 co-relation queries the response was YES. [2024-11-09 15:09:25,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26244 conditions, 14332 events. 6295/14332 cut-off events. For 2288/2330 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 139767 event pairs, 3226 based on Foata normal form. 42/12086 useless extension candidates. Maximal degree in co-relation 26121. Up to 7093 conditions per place. [2024-11-09 15:09:25,398 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 136 selfloop transitions, 7 changer transitions 0/219 dead transitions. [2024-11-09 15:09:25,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 219 transitions, 906 flow [2024-11-09 15:09:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2024-11-09 15:09:25,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6523668639053254 [2024-11-09 15:09:25,401 INFO L175 Difference]: Start difference. First operand has 158 places, 183 transitions, 545 flow. Second operand 4 states and 441 transitions. [2024-11-09 15:09:25,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 219 transitions, 906 flow [2024-11-09 15:09:25,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 219 transitions, 858 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 15:09:25,435 INFO L231 Difference]: Finished difference. Result has 155 places, 183 transitions, 521 flow [2024-11-09 15:09:25,435 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=521, PETRI_PLACES=155, PETRI_TRANSITIONS=183} [2024-11-09 15:09:25,436 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-11-09 15:09:25,436 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 183 transitions, 521 flow [2024-11-09 15:09:25,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2024-11-09 15:09:25,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:25,437 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:25,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:09:25,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:25,638 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:25,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash 228044423, now seen corresponding path program 1 times [2024-11-09 15:09:25,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:25,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788534307] [2024-11-09 15:09:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:25,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:25,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:25,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788534307] [2024-11-09 15:09:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788534307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:09:25,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044993737] [2024-11-09 15:09:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:25,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:25,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:09:25,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:09:25,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:09:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:25,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 15:09:25,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:09:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:26,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:09:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:09:26,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044993737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:09:26,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:09:26,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-09 15:09:26,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137809680] [2024-11-09 15:09:26,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:09:26,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 15:09:26,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:26,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 15:09:26,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-09 15:09:26,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-09 15:09:26,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 183 transitions, 521 flow. Second operand has 23 states, 23 states have (on average 84.3913043478261) internal successors, (1941), 23 states have internal predecessors, (1941), 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) [2024-11-09 15:09:26,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:26,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-09 15:09:26,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:27,319 INFO L124 PetriNetUnfolderBase]: 5757/13572 cut-off events. [2024-11-09 15:09:27,320 INFO L125 PetriNetUnfolderBase]: For 3780/3922 co-relation queries the response was YES. [2024-11-09 15:09:27,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25075 conditions, 13572 events. 5757/13572 cut-off events. For 3780/3922 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 134823 event pairs, 3813 based on Foata normal form. 79/11429 useless extension candidates. Maximal degree in co-relation 18793. Up to 8381 conditions per place. [2024-11-09 15:09:27,386 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 78 selfloop transitions, 22 changer transitions 0/179 dead transitions. [2024-11-09 15:09:27,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 179 transitions, 707 flow [2024-11-09 15:09:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 15:09:27,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 15:09:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1011 transitions. [2024-11-09 15:09:27,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5438407746100054 [2024-11-09 15:09:27,389 INFO L175 Difference]: Start difference. First operand has 155 places, 183 transitions, 521 flow. Second operand 11 states and 1011 transitions. [2024-11-09 15:09:27,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 179 transitions, 707 flow [2024-11-09 15:09:27,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 179 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:09:27,422 INFO L231 Difference]: Finished difference. Result has 163 places, 179 transitions, 543 flow [2024-11-09 15:09:27,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=543, PETRI_PLACES=163, PETRI_TRANSITIONS=179} [2024-11-09 15:09:27,423 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 16 predicate places. [2024-11-09 15:09:27,423 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 179 transitions, 543 flow [2024-11-09 15:09:27,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.3913043478261) internal successors, (1941), 23 states have internal predecessors, (1941), 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) [2024-11-09 15:09:27,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:27,424 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:27,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 15:09:27,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:09:27,625 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:27,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:27,625 INFO L85 PathProgramCache]: Analyzing trace with hash -42703001, now seen corresponding path program 2 times [2024-11-09 15:09:27,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:27,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524514166] [2024-11-09 15:09:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:27,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:27,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:27,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524514166] [2024-11-09 15:09:27,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524514166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:27,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:27,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:27,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577953385] [2024-11-09 15:09:27,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:27,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:27,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:27,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:27,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:27,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 169 [2024-11-09 15:09:27,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 179 transitions, 543 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-11-09 15:09:27,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:27,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 169 [2024-11-09 15:09:27,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:28,661 INFO L124 PetriNetUnfolderBase]: 6529/14592 cut-off events. [2024-11-09 15:09:28,661 INFO L125 PetriNetUnfolderBase]: For 4096/4138 co-relation queries the response was YES. [2024-11-09 15:09:28,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27597 conditions, 14592 events. 6529/14592 cut-off events. For 4096/4138 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 140627 event pairs, 3522 based on Foata normal form. 98/12314 useless extension candidates. Maximal degree in co-relation 27485. Up to 7689 conditions per place. [2024-11-09 15:09:28,835 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 134 selfloop transitions, 7 changer transitions 0/213 dead transitions. [2024-11-09 15:09:28,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 213 transitions, 892 flow [2024-11-09 15:09:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 432 transitions. [2024-11-09 15:09:28,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6390532544378699 [2024-11-09 15:09:28,837 INFO L175 Difference]: Start difference. First operand has 163 places, 179 transitions, 543 flow. Second operand 4 states and 432 transitions. [2024-11-09 15:09:28,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 213 transitions, 892 flow [2024-11-09 15:09:28,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 213 transitions, 848 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-09 15:09:28,868 INFO L231 Difference]: Finished difference. Result has 155 places, 178 transitions, 509 flow [2024-11-09 15:09:28,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=155, PETRI_TRANSITIONS=178} [2024-11-09 15:09:28,868 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-11-09 15:09:28,868 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 178 transitions, 509 flow [2024-11-09 15:09:28,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-11-09 15:09:28,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:28,869 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:28,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:09:28,869 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:28,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:28,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1540450559, now seen corresponding path program 1 times [2024-11-09 15:09:28,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:28,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374918540] [2024-11-09 15:09:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:28,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:28,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:28,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374918540] [2024-11-09 15:09:28,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374918540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:28,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:28,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:28,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799905609] [2024-11-09 15:09:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:28,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:09:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:09:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:09:28,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-09 15:09:28,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 178 transitions, 509 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2024-11-09 15:09:28,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:28,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-09 15:09:28,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:30,480 INFO L124 PetriNetUnfolderBase]: 9773/20944 cut-off events. [2024-11-09 15:09:30,480 INFO L125 PetriNetUnfolderBase]: For 6589/6906 co-relation queries the response was YES. [2024-11-09 15:09:30,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40029 conditions, 20944 events. 9773/20944 cut-off events. For 6589/6906 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 201588 event pairs, 4417 based on Foata normal form. 417/18412 useless extension candidates. Maximal degree in co-relation 33359. Up to 9507 conditions per place. [2024-11-09 15:09:30,586 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 162 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2024-11-09 15:09:30,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 238 transitions, 1020 flow [2024-11-09 15:09:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:09:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:09:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2024-11-09 15:09:30,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7633136094674556 [2024-11-09 15:09:30,588 INFO L175 Difference]: Start difference. First operand has 155 places, 178 transitions, 509 flow. Second operand 3 states and 387 transitions. [2024-11-09 15:09:30,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 238 transitions, 1020 flow [2024-11-09 15:09:30,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 238 transitions, 1000 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:09:30,626 INFO L231 Difference]: Finished difference. Result has 155 places, 179 transitions, 513 flow [2024-11-09 15:09:30,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=155, PETRI_TRANSITIONS=179} [2024-11-09 15:09:30,627 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-11-09 15:09:30,627 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 179 transitions, 513 flow [2024-11-09 15:09:30,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2024-11-09 15:09:30,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:30,628 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:30,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 15:09:30,628 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:30,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1539433692, now seen corresponding path program 1 times [2024-11-09 15:09:30,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:30,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391299797] [2024-11-09 15:09:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:30,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:30,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:30,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391299797] [2024-11-09 15:09:30,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391299797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:30,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:30,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:09:30,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164146768] [2024-11-09 15:09:30,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:30,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:30,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:30,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:30,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:30,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-09 15:09:30,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 179 transitions, 513 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2024-11-09 15:09:30,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:30,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-09 15:09:30,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:32,781 INFO L124 PetriNetUnfolderBase]: 13708/28419 cut-off events. [2024-11-09 15:09:32,781 INFO L125 PetriNetUnfolderBase]: For 8373/8852 co-relation queries the response was YES. [2024-11-09 15:09:32,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55647 conditions, 28419 events. 13708/28419 cut-off events. For 8373/8852 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 277769 event pairs, 6038 based on Foata normal form. 949/25515 useless extension candidates. Maximal degree in co-relation 40940. Up to 13076 conditions per place. [2024-11-09 15:09:32,911 INFO L140 encePairwiseOnDemand]: 153/169 looper letters, 189 selfloop transitions, 10 changer transitions 0/265 dead transitions. [2024-11-09 15:09:32,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 265 transitions, 1197 flow [2024-11-09 15:09:32,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2024-11-09 15:09:32,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-11-09 15:09:32,913 INFO L175 Difference]: Start difference. First operand has 155 places, 179 transitions, 513 flow. Second operand 4 states and 468 transitions. [2024-11-09 15:09:32,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 265 transitions, 1197 flow [2024-11-09 15:09:32,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 265 transitions, 1195 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:09:32,955 INFO L231 Difference]: Finished difference. Result has 158 places, 183 transitions, 579 flow [2024-11-09 15:09:32,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=579, PETRI_PLACES=158, PETRI_TRANSITIONS=183} [2024-11-09 15:09:32,956 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2024-11-09 15:09:32,956 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 183 transitions, 579 flow [2024-11-09 15:09:32,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2024-11-09 15:09:32,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:32,957 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:32,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:09:32,957 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:32,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1131369033, now seen corresponding path program 1 times [2024-11-09 15:09:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:32,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531379412] [2024-11-09 15:09:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:32,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:33,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:33,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531379412] [2024-11-09 15:09:33,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531379412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:33,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:33,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:09:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991493868] [2024-11-09 15:09:33,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:33,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:33,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:33,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-09 15:09:33,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 183 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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) [2024-11-09 15:09:33,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:33,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-09 15:09:33,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:35,131 INFO L124 PetriNetUnfolderBase]: 10460/21880 cut-off events. [2024-11-09 15:09:35,131 INFO L125 PetriNetUnfolderBase]: For 8596/9108 co-relation queries the response was YES. [2024-11-09 15:09:35,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45261 conditions, 21880 events. 10460/21880 cut-off events. For 8596/9108 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 206757 event pairs, 5256 based on Foata normal form. 416/20502 useless extension candidates. Maximal degree in co-relation 34215. Up to 10878 conditions per place. [2024-11-09 15:09:35,244 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 228 selfloop transitions, 4 changer transitions 14/320 dead transitions. [2024-11-09 15:09:35,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 320 transitions, 1476 flow [2024-11-09 15:09:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:09:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:09:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 619 transitions. [2024-11-09 15:09:35,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7325443786982249 [2024-11-09 15:09:35,247 INFO L175 Difference]: Start difference. First operand has 158 places, 183 transitions, 579 flow. Second operand 5 states and 619 transitions. [2024-11-09 15:09:35,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 320 transitions, 1476 flow [2024-11-09 15:09:35,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 320 transitions, 1476 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:09:35,345 INFO L231 Difference]: Finished difference. Result has 165 places, 185 transitions, 604 flow [2024-11-09 15:09:35,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=604, PETRI_PLACES=165, PETRI_TRANSITIONS=185} [2024-11-09 15:09:35,346 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 18 predicate places. [2024-11-09 15:09:35,346 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 185 transitions, 604 flow [2024-11-09 15:09:35,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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) [2024-11-09 15:09:35,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:35,346 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:35,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 15:09:35,347 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:35,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:35,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1093132317, now seen corresponding path program 1 times [2024-11-09 15:09:35,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:35,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818947089] [2024-11-09 15:09:35,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:35,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818947089] [2024-11-09 15:09:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818947089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:35,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:35,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:09:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2415019] [2024-11-09 15:09:35,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:35,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:35,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:35,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2024-11-09 15:09:35,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 185 transitions, 604 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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) [2024-11-09 15:09:35,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:35,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2024-11-09 15:09:35,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:37,558 INFO L124 PetriNetUnfolderBase]: 10820/22036 cut-off events. [2024-11-09 15:09:37,558 INFO L125 PetriNetUnfolderBase]: For 9952/10488 co-relation queries the response was YES. [2024-11-09 15:09:37,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47216 conditions, 22036 events. 10820/22036 cut-off events. For 9952/10488 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 203810 event pairs, 6076 based on Foata normal form. 530/20968 useless extension candidates. Maximal degree in co-relation 36167. Up to 12402 conditions per place. [2024-11-09 15:09:37,670 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 202 selfloop transitions, 3 changer transitions 0/277 dead transitions. [2024-11-09 15:09:37,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 277 transitions, 1285 flow [2024-11-09 15:09:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:37,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 493 transitions. [2024-11-09 15:09:37,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7292899408284024 [2024-11-09 15:09:37,672 INFO L175 Difference]: Start difference. First operand has 165 places, 185 transitions, 604 flow. Second operand 4 states and 493 transitions. [2024-11-09 15:09:37,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 277 transitions, 1285 flow [2024-11-09 15:09:37,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 277 transitions, 1283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:09:37,757 INFO L231 Difference]: Finished difference. Result has 169 places, 186 transitions, 620 flow [2024-11-09 15:09:37,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=620, PETRI_PLACES=169, PETRI_TRANSITIONS=186} [2024-11-09 15:09:37,758 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 22 predicate places. [2024-11-09 15:09:37,758 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 186 transitions, 620 flow [2024-11-09 15:09:37,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 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) [2024-11-09 15:09:37,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:37,758 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:37,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 15:09:37,759 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:37,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:37,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1323792355, now seen corresponding path program 1 times [2024-11-09 15:09:37,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:37,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034729816] [2024-11-09 15:09:37,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:38,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:38,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034729816] [2024-11-09 15:09:38,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034729816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:38,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:38,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:09:38,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544852894] [2024-11-09 15:09:38,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:38,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:09:38,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:38,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:09:38,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:09:38,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 169 [2024-11-09 15:09:38,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 186 transitions, 620 flow. Second operand has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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) [2024-11-09 15:09:38,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:38,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 169 [2024-11-09 15:09:38,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:40,446 INFO L124 PetriNetUnfolderBase]: 12403/24884 cut-off events. [2024-11-09 15:09:40,446 INFO L125 PetriNetUnfolderBase]: For 10225/10700 co-relation queries the response was YES. [2024-11-09 15:09:40,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54302 conditions, 24884 events. 12403/24884 cut-off events. For 10225/10700 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 228228 event pairs, 5860 based on Foata normal form. 247/23230 useless extension candidates. Maximal degree in co-relation 38475. Up to 12224 conditions per place. [2024-11-09 15:09:40,581 INFO L140 encePairwiseOnDemand]: 158/169 looper letters, 187 selfloop transitions, 12 changer transitions 0/267 dead transitions. [2024-11-09 15:09:40,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 267 transitions, 1266 flow [2024-11-09 15:09:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:09:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:09:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2024-11-09 15:09:40,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-11-09 15:09:40,584 INFO L175 Difference]: Start difference. First operand has 169 places, 186 transitions, 620 flow. Second operand 5 states and 546 transitions. [2024-11-09 15:09:40,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 267 transitions, 1266 flow [2024-11-09 15:09:40,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 267 transitions, 1264 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:09:40,706 INFO L231 Difference]: Finished difference. Result has 173 places, 186 transitions, 664 flow [2024-11-09 15:09:40,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=664, PETRI_PLACES=173, PETRI_TRANSITIONS=186} [2024-11-09 15:09:40,707 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 26 predicate places. [2024-11-09 15:09:40,707 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 186 transitions, 664 flow [2024-11-09 15:09:40,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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) [2024-11-09 15:09:40,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:40,708 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:40,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 15:09:40,708 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:40,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1323791330, now seen corresponding path program 1 times [2024-11-09 15:09:40,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:40,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897931515] [2024-11-09 15:09:40,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:40,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:40,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:40,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897931515] [2024-11-09 15:09:40,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897931515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:40,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:40,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:09:40,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983345931] [2024-11-09 15:09:40,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:40,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:40,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:41,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-09 15:09:41,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 186 transitions, 664 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2024-11-09 15:09:41,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:41,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-09 15:09:41,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:43,096 INFO L124 PetriNetUnfolderBase]: 10854/23385 cut-off events. [2024-11-09 15:09:43,096 INFO L125 PetriNetUnfolderBase]: For 14497/14838 co-relation queries the response was YES. [2024-11-09 15:09:43,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52057 conditions, 23385 events. 10854/23385 cut-off events. For 14497/14838 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 225912 event pairs, 5825 based on Foata normal form. 385/21945 useless extension candidates. Maximal degree in co-relation 38516. Up to 12180 conditions per place. [2024-11-09 15:09:43,212 INFO L140 encePairwiseOnDemand]: 159/169 looper letters, 189 selfloop transitions, 9 changer transitions 0/266 dead transitions. [2024-11-09 15:09:43,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 266 transitions, 1298 flow [2024-11-09 15:09:43,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 462 transitions. [2024-11-09 15:09:43,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6834319526627219 [2024-11-09 15:09:43,214 INFO L175 Difference]: Start difference. First operand has 173 places, 186 transitions, 664 flow. Second operand 4 states and 462 transitions. [2024-11-09 15:09:43,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 266 transitions, 1298 flow [2024-11-09 15:09:43,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 266 transitions, 1282 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:09:43,353 INFO L231 Difference]: Finished difference. Result has 173 places, 184 transitions, 654 flow [2024-11-09 15:09:43,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=654, PETRI_PLACES=173, PETRI_TRANSITIONS=184} [2024-11-09 15:09:43,353 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 26 predicate places. [2024-11-09 15:09:43,353 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 184 transitions, 654 flow [2024-11-09 15:09:43,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 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) [2024-11-09 15:09:43,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:43,354 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:43,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 15:09:43,354 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:43,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:43,354 INFO L85 PathProgramCache]: Analyzing trace with hash 477805948, now seen corresponding path program 1 times [2024-11-09 15:09:43,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:43,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68396981] [2024-11-09 15:09:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:43,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:43,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68396981] [2024-11-09 15:09:43,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68396981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:43,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:43,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494552414] [2024-11-09 15:09:43,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:43,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:43,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:43,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:43,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:43,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2024-11-09 15:09:43,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 184 transitions, 654 flow. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 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) [2024-11-09 15:09:43,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:43,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2024-11-09 15:09:43,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:45,579 INFO L124 PetriNetUnfolderBase]: 10920/24469 cut-off events. [2024-11-09 15:09:45,580 INFO L125 PetriNetUnfolderBase]: For 15742/15983 co-relation queries the response was YES. [2024-11-09 15:09:45,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53665 conditions, 24469 events. 10920/24469 cut-off events. For 15742/15983 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 245471 event pairs, 6100 based on Foata normal form. 195/22454 useless extension candidates. Maximal degree in co-relation 40858. Up to 12714 conditions per place. [2024-11-09 15:09:45,740 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 149 selfloop transitions, 7 changer transitions 0/228 dead transitions. [2024-11-09 15:09:45,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 228 transitions, 1172 flow [2024-11-09 15:09:45,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2024-11-09 15:09:45,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.650887573964497 [2024-11-09 15:09:45,742 INFO L175 Difference]: Start difference. First operand has 173 places, 184 transitions, 654 flow. Second operand 4 states and 440 transitions. [2024-11-09 15:09:45,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 228 transitions, 1172 flow [2024-11-09 15:09:45,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 228 transitions, 1148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:09:45,892 INFO L231 Difference]: Finished difference. Result has 174 places, 184 transitions, 665 flow [2024-11-09 15:09:45,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=174, PETRI_TRANSITIONS=184} [2024-11-09 15:09:45,892 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 27 predicate places. [2024-11-09 15:09:45,893 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 184 transitions, 665 flow [2024-11-09 15:09:45,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 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) [2024-11-09 15:09:45,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:45,893 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:45,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 15:09:45,894 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:45,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:45,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1912111665, now seen corresponding path program 1 times [2024-11-09 15:09:45,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:45,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969876604] [2024-11-09 15:09:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:45,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:46,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:46,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969876604] [2024-11-09 15:09:46,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969876604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:46,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:46,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:09:46,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794598848] [2024-11-09 15:09:46,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:46,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:09:46,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:09:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:09:46,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 169 [2024-11-09 15:09:46,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 184 transitions, 665 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 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) [2024-11-09 15:09:46,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:46,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 169 [2024-11-09 15:09:46,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:48,795 INFO L124 PetriNetUnfolderBase]: 13089/26010 cut-off events. [2024-11-09 15:09:48,795 INFO L125 PetriNetUnfolderBase]: For 18712/19201 co-relation queries the response was YES. [2024-11-09 15:09:48,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60362 conditions, 26010 events. 13089/26010 cut-off events. For 18712/19201 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 237783 event pairs, 6724 based on Foata normal form. 573/24632 useless extension candidates. Maximal degree in co-relation 45118. Up to 13834 conditions per place. [2024-11-09 15:09:48,948 INFO L140 encePairwiseOnDemand]: 156/169 looper letters, 314 selfloop transitions, 13 changer transitions 0/391 dead transitions. [2024-11-09 15:09:48,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 391 transitions, 2045 flow [2024-11-09 15:09:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:09:48,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:09:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 835 transitions. [2024-11-09 15:09:48,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.617603550295858 [2024-11-09 15:09:48,951 INFO L175 Difference]: Start difference. First operand has 174 places, 184 transitions, 665 flow. Second operand 8 states and 835 transitions. [2024-11-09 15:09:48,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 391 transitions, 2045 flow [2024-11-09 15:09:49,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 391 transitions, 2012 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:09:49,182 INFO L231 Difference]: Finished difference. Result has 182 places, 186 transitions, 714 flow [2024-11-09 15:09:49,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=714, PETRI_PLACES=182, PETRI_TRANSITIONS=186} [2024-11-09 15:09:49,183 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 35 predicate places. [2024-11-09 15:09:49,183 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 186 transitions, 714 flow [2024-11-09 15:09:49,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 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) [2024-11-09 15:09:49,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:49,183 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:49,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 15:09:49,184 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:49,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1927052487, now seen corresponding path program 1 times [2024-11-09 15:09:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:49,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743065742] [2024-11-09 15:09:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:49,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:49,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743065742] [2024-11-09 15:09:49,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743065742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:49,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:49,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:09:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235169888] [2024-11-09 15:09:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:49,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:49,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:49,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:49,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 169 [2024-11-09 15:09:49,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 186 transitions, 714 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2024-11-09 15:09:49,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:49,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 169 [2024-11-09 15:09:49,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:51,782 INFO L124 PetriNetUnfolderBase]: 11310/24706 cut-off events. [2024-11-09 15:09:51,782 INFO L125 PetriNetUnfolderBase]: For 26137/26723 co-relation queries the response was YES. [2024-11-09 15:09:51,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58268 conditions, 24706 events. 11310/24706 cut-off events. For 26137/26723 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 243246 event pairs, 6670 based on Foata normal form. 541/23271 useless extension candidates. Maximal degree in co-relation 55018. Up to 13762 conditions per place. [2024-11-09 15:09:51,911 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 155 selfloop transitions, 7 changer transitions 0/230 dead transitions. [2024-11-09 15:09:51,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 230 transitions, 1259 flow [2024-11-09 15:09:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 431 transitions. [2024-11-09 15:09:51,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6375739644970414 [2024-11-09 15:09:51,913 INFO L175 Difference]: Start difference. First operand has 182 places, 186 transitions, 714 flow. Second operand 4 states and 431 transitions. [2024-11-09 15:09:51,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 230 transitions, 1259 flow [2024-11-09 15:09:52,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 230 transitions, 1240 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 15:09:52,136 INFO L231 Difference]: Finished difference. Result has 181 places, 185 transitions, 713 flow [2024-11-09 15:09:52,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=713, PETRI_PLACES=181, PETRI_TRANSITIONS=185} [2024-11-09 15:09:52,137 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 34 predicate places. [2024-11-09 15:09:52,137 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 185 transitions, 713 flow [2024-11-09 15:09:52,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2024-11-09 15:09:52,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:52,137 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:52,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 15:09:52,138 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:52,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:52,138 INFO L85 PathProgramCache]: Analyzing trace with hash 92837097, now seen corresponding path program 1 times [2024-11-09 15:09:52,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:52,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654312013] [2024-11-09 15:09:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:52,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:52,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654312013] [2024-11-09 15:09:52,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654312013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:52,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:52,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:09:52,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692979510] [2024-11-09 15:09:52,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:52,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:52,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:52,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:52,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-09 15:09:52,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 185 transitions, 713 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2024-11-09 15:09:52,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:52,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-09 15:09:52,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:54,777 INFO L124 PetriNetUnfolderBase]: 12176/25183 cut-off events. [2024-11-09 15:09:54,777 INFO L125 PetriNetUnfolderBase]: For 23795/24183 co-relation queries the response was YES. [2024-11-09 15:09:54,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60549 conditions, 25183 events. 12176/25183 cut-off events. For 23795/24183 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 238058 event pairs, 6403 based on Foata normal form. 510/24031 useless extension candidates. Maximal degree in co-relation 57521. Up to 13342 conditions per place. [2024-11-09 15:09:54,903 INFO L140 encePairwiseOnDemand]: 159/169 looper letters, 190 selfloop transitions, 10 changer transitions 0/266 dead transitions. [2024-11-09 15:09:54,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 266 transitions, 1405 flow [2024-11-09 15:09:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:09:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:09:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2024-11-09 15:09:54,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6775147928994083 [2024-11-09 15:09:54,904 INFO L175 Difference]: Start difference. First operand has 181 places, 185 transitions, 713 flow. Second operand 4 states and 458 transitions. [2024-11-09 15:09:54,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 266 transitions, 1405 flow [2024-11-09 15:09:55,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 266 transitions, 1373 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:09:55,183 INFO L231 Difference]: Finished difference. Result has 179 places, 184 transitions, 721 flow [2024-11-09 15:09:55,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=179, PETRI_TRANSITIONS=184} [2024-11-09 15:09:55,183 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 32 predicate places. [2024-11-09 15:09:55,183 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 184 transitions, 721 flow [2024-11-09 15:09:55,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2024-11-09 15:09:55,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:55,184 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:55,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 15:09:55,184 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:55,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash -198460225, now seen corresponding path program 1 times [2024-11-09 15:09:55,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:55,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348395653] [2024-11-09 15:09:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:55,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:55,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:55,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348395653] [2024-11-09 15:09:55,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348395653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:55,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:55,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:09:55,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114792406] [2024-11-09 15:09:55,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:55,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:55,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:55,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:55,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:55,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-11-09 15:09:55,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 184 transitions, 721 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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) [2024-11-09 15:09:55,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:55,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-11-09 15:09:55,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:09:57,229 INFO L124 PetriNetUnfolderBase]: 9724/20463 cut-off events. [2024-11-09 15:09:57,229 INFO L125 PetriNetUnfolderBase]: For 23436/24057 co-relation queries the response was YES. [2024-11-09 15:09:57,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48862 conditions, 20463 events. 9724/20463 cut-off events. For 23436/24057 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 188303 event pairs, 5163 based on Foata normal form. 604/19605 useless extension candidates. Maximal degree in co-relation 46359. Up to 10520 conditions per place. [2024-11-09 15:09:57,348 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 243 selfloop transitions, 4 changer transitions 22/337 dead transitions. [2024-11-09 15:09:57,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 337 transitions, 2018 flow [2024-11-09 15:09:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:09:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:09:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2024-11-09 15:09:57,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7266272189349112 [2024-11-09 15:09:57,350 INFO L175 Difference]: Start difference. First operand has 179 places, 184 transitions, 721 flow. Second operand 5 states and 614 transitions. [2024-11-09 15:09:57,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 337 transitions, 2018 flow [2024-11-09 15:09:57,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 337 transitions, 1973 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 15:09:57,464 INFO L231 Difference]: Finished difference. Result has 184 places, 186 transitions, 734 flow [2024-11-09 15:09:57,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=734, PETRI_PLACES=184, PETRI_TRANSITIONS=186} [2024-11-09 15:09:57,464 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 37 predicate places. [2024-11-09 15:09:57,465 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 186 transitions, 734 flow [2024-11-09 15:09:57,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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) [2024-11-09 15:09:57,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:09:57,465 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:09:57,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 15:09:57,465 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:09:57,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:09:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash -160254261, now seen corresponding path program 1 times [2024-11-09 15:09:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:09:57,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683537087] [2024-11-09 15:09:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:09:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:09:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:09:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:09:57,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:09:57,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683537087] [2024-11-09 15:09:57,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683537087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:09:57,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:09:57,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:09:57,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996660632] [2024-11-09 15:09:57,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:09:57,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:09:57,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:09:57,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:09:57,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:09:57,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2024-11-09 15:09:57,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 186 transitions, 734 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2024-11-09 15:09:57,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:09:57,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2024-11-09 15:09:57,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:00,063 INFO L124 PetriNetUnfolderBase]: 10058/20653 cut-off events. [2024-11-09 15:10:00,063 INFO L125 PetriNetUnfolderBase]: For 22743/23384 co-relation queries the response was YES. [2024-11-09 15:10:00,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50084 conditions, 20653 events. 10058/20653 cut-off events. For 22743/23384 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 185915 event pairs, 5888 based on Foata normal form. 723/20102 useless extension candidates. Maximal degree in co-relation 47652. Up to 11850 conditions per place. [2024-11-09 15:10:00,169 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 220 selfloop transitions, 3 changer transitions 0/289 dead transitions. [2024-11-09 15:10:00,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 289 transitions, 1666 flow [2024-11-09 15:10:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:10:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:10:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 490 transitions. [2024-11-09 15:10:00,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7248520710059172 [2024-11-09 15:10:00,171 INFO L175 Difference]: Start difference. First operand has 184 places, 186 transitions, 734 flow. Second operand 4 states and 490 transitions. [2024-11-09 15:10:00,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 289 transitions, 1666 flow [2024-11-09 15:10:00,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 289 transitions, 1664 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:10:00,264 INFO L231 Difference]: Finished difference. Result has 188 places, 187 transitions, 750 flow [2024-11-09 15:10:00,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=750, PETRI_PLACES=188, PETRI_TRANSITIONS=187} [2024-11-09 15:10:00,264 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 41 predicate places. [2024-11-09 15:10:00,264 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 187 transitions, 750 flow [2024-11-09 15:10:00,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2024-11-09 15:10:00,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:00,265 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:00,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 15:10:00,265 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:10:00,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash -390913274, now seen corresponding path program 1 times [2024-11-09 15:10:00,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:00,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042984241] [2024-11-09 15:10:00,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:00,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:10:00,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:00,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042984241] [2024-11-09 15:10:00,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042984241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:00,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:00,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:10:00,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493723933] [2024-11-09 15:10:00,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:00,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:10:00,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:10:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:10:00,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-11-09 15:10:00,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 187 transitions, 750 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2024-11-09 15:10:00,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:00,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-11-09 15:10:00,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:02,588 INFO L124 PetriNetUnfolderBase]: 10159/21384 cut-off events. [2024-11-09 15:10:02,588 INFO L125 PetriNetUnfolderBase]: For 24366/24886 co-relation queries the response was YES. [2024-11-09 15:10:02,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52357 conditions, 21384 events. 10159/21384 cut-off events. For 24366/24886 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 196683 event pairs, 5796 based on Foata normal form. 620/20534 useless extension candidates. Maximal degree in co-relation 49700. Up to 11770 conditions per place. [2024-11-09 15:10:02,726 INFO L140 encePairwiseOnDemand]: 159/169 looper letters, 208 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2024-11-09 15:10:02,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 279 transitions, 1640 flow [2024-11-09 15:10:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:10:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:10:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 460 transitions. [2024-11-09 15:10:02,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6804733727810651 [2024-11-09 15:10:02,728 INFO L175 Difference]: Start difference. First operand has 188 places, 187 transitions, 750 flow. Second operand 4 states and 460 transitions. [2024-11-09 15:10:02,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 279 transitions, 1640 flow [2024-11-09 15:10:02,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 279 transitions, 1632 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:10:02,885 INFO L231 Difference]: Finished difference. Result has 189 places, 185 transitions, 748 flow [2024-11-09 15:10:02,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=748, PETRI_PLACES=189, PETRI_TRANSITIONS=185} [2024-11-09 15:10:02,886 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 42 predicate places. [2024-11-09 15:10:02,886 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 185 transitions, 748 flow [2024-11-09 15:10:02,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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) [2024-11-09 15:10:02,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:02,886 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:02,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 15:10:02,887 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:10:02,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:02,887 INFO L85 PathProgramCache]: Analyzing trace with hash -390914299, now seen corresponding path program 1 times [2024-11-09 15:10:02,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:02,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138223904] [2024-11-09 15:10:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:02,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:10:03,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:03,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138223904] [2024-11-09 15:10:03,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138223904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:03,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:03,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:10:03,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506284209] [2024-11-09 15:10:03,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:03,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:10:03,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:03,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:10:03,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:10:03,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 169 [2024-11-09 15:10:03,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 185 transitions, 748 flow. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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) [2024-11-09 15:10:03,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:03,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 169 [2024-11-09 15:10:03,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:10:05,332 INFO L124 PetriNetUnfolderBase]: 11495/22401 cut-off events. [2024-11-09 15:10:05,332 INFO L125 PetriNetUnfolderBase]: For 25371/26081 co-relation queries the response was YES. [2024-11-09 15:10:05,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56835 conditions, 22401 events. 11495/22401 cut-off events. For 25371/26081 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 193094 event pairs, 5796 based on Foata normal form. 546/21791 useless extension candidates. Maximal degree in co-relation 54043. Up to 11769 conditions per place. [2024-11-09 15:10:05,552 INFO L140 encePairwiseOnDemand]: 158/169 looper letters, 206 selfloop transitions, 12 changer transitions 0/278 dead transitions. [2024-11-09 15:10:05,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 278 transitions, 1650 flow [2024-11-09 15:10:05,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:10:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:10:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2024-11-09 15:10:05,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6437869822485207 [2024-11-09 15:10:05,554 INFO L175 Difference]: Start difference. First operand has 189 places, 185 transitions, 748 flow. Second operand 5 states and 544 transitions. [2024-11-09 15:10:05,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 278 transitions, 1650 flow [2024-11-09 15:10:05,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 278 transitions, 1637 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:10:05,919 INFO L231 Difference]: Finished difference. Result has 192 places, 185 transitions, 781 flow [2024-11-09 15:10:05,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=781, PETRI_PLACES=192, PETRI_TRANSITIONS=185} [2024-11-09 15:10:05,920 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 45 predicate places. [2024-11-09 15:10:05,920 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 185 transitions, 781 flow [2024-11-09 15:10:05,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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) [2024-11-09 15:10:05,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:10:05,920 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:10:05,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 15:10:05,920 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-11-09 15:10:05,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:10:05,921 INFO L85 PathProgramCache]: Analyzing trace with hash 766560401, now seen corresponding path program 1 times [2024-11-09 15:10:05,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:10:05,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144597062] [2024-11-09 15:10:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:10:05,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:10:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:10:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 15:10:06,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:10:06,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144597062] [2024-11-09 15:10:06,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144597062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:10:06,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:10:06,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:10:06,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981213643] [2024-11-09 15:10:06,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:10:06,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:10:06,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:10:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:10:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 15:10:06,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 169 [2024-11-09 15:10:06,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 185 transitions, 781 flow. Second operand has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 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) [2024-11-09 15:10:06,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:10:06,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 169 [2024-11-09 15:10:06,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand