./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.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 5b29ee6f81c7ed2984792cb48e45a380cefe6f3d0c807482de3b6756d33333e4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:49:31,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:49:31,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:49:31,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:49:31,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:49:31,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:49:31,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:49:31,156 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:49:31,157 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:49:31,157 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:49:31,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:49:31,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:49:31,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:49:31,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:49:31,158 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:49:31,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:49:31,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:49:31,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:49:31,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:49:31,162 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:49:31,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:49:31,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:49:31,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:49:31,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:49:31,166 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:49:31,166 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:49:31,166 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:49:31,166 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:49:31,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:49:31,167 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:49:31,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:49:31,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:49:31,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:49:31,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:49:31,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:49:31,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:49:31,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:49:31,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:49:31,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:49:31,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:49:31,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:49:31,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:49:31,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:49:31,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:49:31,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b29ee6f81c7ed2984792cb48e45a380cefe6f3d0c807482de3b6756d33333e4 [2024-10-13 16:49:31,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:49:31,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:49:31,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:49:31,448 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:49:31,448 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:49:31,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2024-10-13 16:49:32,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:49:32,884 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:49:32,884 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2024-10-13 16:49:32,894 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57565fea2/e258fba85e73419a8754f46375bd6ce7/FLAG158bb1545 [2024-10-13 16:49:32,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57565fea2/e258fba85e73419a8754f46375bd6ce7 [2024-10-13 16:49:32,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:49:32,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:49:32,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:49:32,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:49:32,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:49:32,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:49:32" (1/1) ... [2024-10-13 16:49:32,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cfb0d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:32, skipping insertion in model container [2024-10-13 16:49:32,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:49:32" (1/1) ... [2024-10-13 16:49:32,950 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:49:33,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:49:33,132 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:49:33,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:49:33,165 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:49:33,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33 WrapperNode [2024-10-13 16:49:33,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:49:33,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:49:33,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:49:33,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:49:33,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,195 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 158 [2024-10-13 16:49:33,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:49:33,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:49:33,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:49:33,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:49:33,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,206 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,219 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-13 16:49:33,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:49:33,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:49:33,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:49:33,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:49:33,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (1/1) ... [2024-10-13 16:49:33,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:49:33,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:33,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:49:33,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:49:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:49:33,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:49:33,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:49:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:49:33,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:49:33,316 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:49:33,421 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:49:33,424 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:49:33,739 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:49:33,739 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:49:33,910 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:49:33,910 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 16:49:33,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:33 BoogieIcfgContainer [2024-10-13 16:49:33,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:49:33,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:49:33,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:49:33,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:49:33,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:49:32" (1/3) ... [2024-10-13 16:49:33,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c836bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:49:33, skipping insertion in model container [2024-10-13 16:49:33,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:33" (2/3) ... [2024-10-13 16:49:33,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c836bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:49:33, skipping insertion in model container [2024-10-13 16:49:33,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:33" (3/3) ... [2024-10-13 16:49:33,919 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2024-10-13 16:49:33,934 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:49:33,934 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-13 16:49:33,934 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:49:33,979 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:49:34,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 108 flow [2024-10-13 16:49:34,029 INFO L124 PetriNetUnfolderBase]: 5/45 cut-off events. [2024-10-13 16:49:34,029 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:49:34,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 45 events. 5/45 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-13 16:49:34,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 47 transitions, 108 flow [2024-10-13 16:49:34,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 43 transitions, 95 flow [2024-10-13 16:49:34,046 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:49:34,052 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;@7d6a233a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:49:34,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-13 16:49:34,055 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:49:34,055 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:49:34,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:49:34,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:34,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:49:34,057 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:34,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash 465502, now seen corresponding path program 1 times [2024-10-13 16:49:34,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:34,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818657477] [2024-10-13 16:49:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:34,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:34,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818657477] [2024-10-13 16:49:34,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818657477] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:34,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:34,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:49:34,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141429844] [2024-10-13 16:49:34,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:34,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:34,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:34,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:34,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:34,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:49:34,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:34,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:34,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:49:34,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:34,529 INFO L124 PetriNetUnfolderBase]: 219/420 cut-off events. [2024-10-13 16:49:34,530 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-13 16:49:34,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 420 events. 219/420 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2182 event pairs, 194 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 729. Up to 377 conditions per place. [2024-10-13 16:49:34,540 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 28 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-13 16:49:34,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 163 flow [2024-10-13 16:49:34,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-10-13 16:49:34,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-10-13 16:49:34,553 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 95 flow. Second operand 4 states and 95 transitions. [2024-10-13 16:49:34,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 163 flow [2024-10-13 16:49:34,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:49:34,558 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 117 flow [2024-10-13 16:49:34,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-10-13 16:49:34,566 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-10-13 16:49:34,567 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 117 flow [2024-10-13 16:49:34,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:34,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:34,567 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:49:34,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:49:34,568 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:34,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash 983330813, now seen corresponding path program 1 times [2024-10-13 16:49:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732716658] [2024-10-13 16:49:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:34,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:34,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732716658] [2024-10-13 16:49:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732716658] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:34,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39093817] [2024-10-13 16:49:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:34,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:34,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:34,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:34,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:49:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:34,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:34,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:34,804 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:34,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39093817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:34,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:34,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:49:34,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897912873] [2024-10-13 16:49:34,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:34,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:49:34,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:34,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:49:34,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:49:34,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:49:34,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:34,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:34,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:49:34,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:34,967 INFO L124 PetriNetUnfolderBase]: 219/419 cut-off events. [2024-10-13 16:49:34,967 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-13 16:49:34,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 419 events. 219/419 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2191 event pairs, 194 based on Foata normal form. 1/315 useless extension candidates. Maximal degree in co-relation 796. Up to 372 conditions per place. [2024-10-13 16:49:34,973 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-10-13 16:49:34,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 175 flow [2024-10-13 16:49:34,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-10-13 16:49:34,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4326241134751773 [2024-10-13 16:49:34,975 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 117 flow. Second operand 6 states and 122 transitions. [2024-10-13 16:49:34,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 175 flow [2024-10-13 16:49:34,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:34,976 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 124 flow [2024-10-13 16:49:34,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-10-13 16:49:34,977 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-10-13 16:49:34,977 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 124 flow [2024-10-13 16:49:34,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:34,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:34,978 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:34,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:35,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:35,180 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:35,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:35,180 INFO L85 PathProgramCache]: Analyzing trace with hash 484397929, now seen corresponding path program 1 times [2024-10-13 16:49:35,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:35,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195136809] [2024-10-13 16:49:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:35,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:35,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:35,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195136809] [2024-10-13 16:49:35,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195136809] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:35,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:35,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:49:35,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913579296] [2024-10-13 16:49:35,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:35,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:35,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:35,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:35,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:49:35,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:49:35,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:35,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:35,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:49:35,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:35,376 INFO L124 PetriNetUnfolderBase]: 261/514 cut-off events. [2024-10-13 16:49:35,377 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 16:49:35,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 514 events. 261/514 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2620 event pairs, 152 based on Foata normal form. 30/404 useless extension candidates. Maximal degree in co-relation 968. Up to 303 conditions per place. [2024-10-13 16:49:35,383 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 46 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-13 16:49:35,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 254 flow [2024-10-13 16:49:35,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-10-13 16:49:35,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2024-10-13 16:49:35,386 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 124 flow. Second operand 3 states and 91 transitions. [2024-10-13 16:49:35,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 254 flow [2024-10-13 16:49:35,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 232 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-13 16:49:35,389 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 104 flow [2024-10-13 16:49:35,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-10-13 16:49:35,389 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2024-10-13 16:49:35,390 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 104 flow [2024-10-13 16:49:35,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:35,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:35,390 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:49:35,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:49:35,390 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:35,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:35,391 INFO L85 PathProgramCache]: Analyzing trace with hash 418484597, now seen corresponding path program 1 times [2024-10-13 16:49:35,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:35,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927544203] [2024-10-13 16:49:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:35,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927544203] [2024-10-13 16:49:35,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927544203] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738524415] [2024-10-13 16:49:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:35,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:35,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:35,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:35,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:49:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:35,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:35,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:35,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:35,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738524415] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:35,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:35,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:49:35,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817507814] [2024-10-13 16:49:35,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:35,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:49:35,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:35,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:49:35,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:49:35,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:49:35,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 104 flow. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:35,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:35,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:49:35,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:35,737 INFO L124 PetriNetUnfolderBase]: 222/430 cut-off events. [2024-10-13 16:49:35,738 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-10-13 16:49:35,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 430 events. 222/430 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2237 event pairs, 194 based on Foata normal form. 3/355 useless extension candidates. Maximal degree in co-relation 852. Up to 379 conditions per place. [2024-10-13 16:49:35,741 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 27 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-10-13 16:49:35,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 214 flow [2024-10-13 16:49:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:49:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:49:35,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-10-13 16:49:35,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4106382978723404 [2024-10-13 16:49:35,744 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 104 flow. Second operand 10 states and 193 transitions. [2024-10-13 16:49:35,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 214 flow [2024-10-13 16:49:35,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:49:35,747 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 174 flow [2024-10-13 16:49:35,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-10-13 16:49:35,748 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2024-10-13 16:49:35,748 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 174 flow [2024-10-13 16:49:35,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:35,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:35,749 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:35,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:49:35,952 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,SelfDestructingSolverStorable3 [2024-10-13 16:49:35,953 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:35,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:35,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2131434395, now seen corresponding path program 1 times [2024-10-13 16:49:35,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:35,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250347244] [2024-10-13 16:49:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:35,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:36,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:36,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250347244] [2024-10-13 16:49:36,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250347244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:36,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:36,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:36,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899975123] [2024-10-13 16:49:36,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:36,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:36,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:36,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:36,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:36,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:49:36,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:36,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:36,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:49:36,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:36,135 INFO L124 PetriNetUnfolderBase]: 249/494 cut-off events. [2024-10-13 16:49:36,137 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-10-13 16:49:36,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 494 events. 249/494 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2627 event pairs, 222 based on Foata normal form. 5/390 useless extension candidates. Maximal degree in co-relation 963. Up to 383 conditions per place. [2024-10-13 16:49:36,141 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 36 selfloop transitions, 2 changer transitions 12/63 dead transitions. [2024-10-13 16:49:36,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 300 flow [2024-10-13 16:49:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-10-13 16:49:36,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5904255319148937 [2024-10-13 16:49:36,144 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 174 flow. Second operand 4 states and 111 transitions. [2024-10-13 16:49:36,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 300 flow [2024-10-13 16:49:36,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 289 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 16:49:36,147 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 168 flow [2024-10-13 16:49:36,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-10-13 16:49:36,149 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 13 predicate places. [2024-10-13 16:49:36,149 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 168 flow [2024-10-13 16:49:36,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:36,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:36,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:36,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:49:36,150 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:36,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1261080228, now seen corresponding path program 1 times [2024-10-13 16:49:36,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:36,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177040605] [2024-10-13 16:49:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:36,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:36,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177040605] [2024-10-13 16:49:36,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177040605] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:36,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713108334] [2024-10-13 16:49:36,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:36,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:36,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:36,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:36,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:49:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:36,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:49:36,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:36,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:36,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713108334] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:36,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:36,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-10-13 16:49:36,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38365288] [2024-10-13 16:49:36,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:36,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:36,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:36,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:36,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:49:36,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:49:36,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:36,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:36,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:49:36,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:36,452 INFO L124 PetriNetUnfolderBase]: 219/451 cut-off events. [2024-10-13 16:49:36,452 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-13 16:49:36,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 451 events. 219/451 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2286 event pairs, 152 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 904. Up to 310 conditions per place. [2024-10-13 16:49:36,455 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 52 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2024-10-13 16:49:36,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 314 flow [2024-10-13 16:49:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-13 16:49:36,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-10-13 16:49:36,457 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 168 flow. Second operand 4 states and 105 transitions. [2024-10-13 16:49:36,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 314 flow [2024-10-13 16:49:36,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:49:36,461 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 168 flow [2024-10-13 16:49:36,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-10-13 16:49:36,461 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-13 16:49:36,462 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 168 flow [2024-10-13 16:49:36,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:36,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:36,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:36,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:49:36,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:36,663 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:36,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash -438780918, now seen corresponding path program 1 times [2024-10-13 16:49:36,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:36,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012749044] [2024-10-13 16:49:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:36,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:36,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012749044] [2024-10-13 16:49:36,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012749044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:36,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:36,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:36,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194424891] [2024-10-13 16:49:36,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:36,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:36,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:36,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:36,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:36,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:49:36,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:36,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:36,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:49:36,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:36,896 INFO L124 PetriNetUnfolderBase]: 426/818 cut-off events. [2024-10-13 16:49:36,896 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2024-10-13 16:49:36,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1709 conditions, 818 events. 426/818 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3890 event pairs, 133 based on Foata normal form. 52/712 useless extension candidates. Maximal degree in co-relation 1680. Up to 402 conditions per place. [2024-10-13 16:49:36,901 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 78 selfloop transitions, 6 changer transitions 6/100 dead transitions. [2024-10-13 16:49:36,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 458 flow [2024-10-13 16:49:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:49:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:49:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-10-13 16:49:36,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6638297872340425 [2024-10-13 16:49:36,902 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 168 flow. Second operand 5 states and 156 transitions. [2024-10-13 16:49:36,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 458 flow [2024-10-13 16:49:36,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 452 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:49:36,904 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 207 flow [2024-10-13 16:49:36,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-10-13 16:49:36,905 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-10-13 16:49:36,905 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 207 flow [2024-10-13 16:49:36,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:36,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:36,906 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:36,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:49:36,906 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:36,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash -237763625, now seen corresponding path program 1 times [2024-10-13 16:49:36,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:36,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478180467] [2024-10-13 16:49:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:36,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:36,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:36,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478180467] [2024-10-13 16:49:36,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478180467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:36,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:36,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:49:36,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593826766] [2024-10-13 16:49:36,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:36,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:36,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:36,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:36,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:49:36,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:49:36,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:36,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:36,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:49:36,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:37,071 INFO L124 PetriNetUnfolderBase]: 319/690 cut-off events. [2024-10-13 16:49:37,072 INFO L125 PetriNetUnfolderBase]: For 430/455 co-relation queries the response was YES. [2024-10-13 16:49:37,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 690 events. 319/690 cut-off events. For 430/455 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3440 event pairs, 234 based on Foata normal form. 25/650 useless extension candidates. Maximal degree in co-relation 1489. Up to 547 conditions per place. [2024-10-13 16:49:37,076 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 39 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2024-10-13 16:49:37,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 283 flow [2024-10-13 16:49:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-13 16:49:37,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-10-13 16:49:37,077 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 207 flow. Second operand 3 states and 78 transitions. [2024-10-13 16:49:37,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 283 flow [2024-10-13 16:49:37,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:37,078 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 202 flow [2024-10-13 16:49:37,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-10-13 16:49:37,081 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2024-10-13 16:49:37,081 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 202 flow [2024-10-13 16:49:37,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:37,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:37,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:37,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:49:37,081 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:37,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash -237763624, now seen corresponding path program 1 times [2024-10-13 16:49:37,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:37,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102360415] [2024-10-13 16:49:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:37,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:37,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:37,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102360415] [2024-10-13 16:49:37,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102360415] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:37,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297857592] [2024-10-13 16:49:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:37,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:37,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:37,200 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:37,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:49:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:37,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:49:37,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:37,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:37,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297857592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:37,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:37,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-10-13 16:49:37,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053636375] [2024-10-13 16:49:37,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:37,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:37,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:49:37,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 16:49:37,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:37,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:37,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 16:49:37,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:37,389 INFO L124 PetriNetUnfolderBase]: 263/557 cut-off events. [2024-10-13 16:49:37,389 INFO L125 PetriNetUnfolderBase]: For 337/362 co-relation queries the response was YES. [2024-10-13 16:49:37,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 557 events. 263/557 cut-off events. For 337/362 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2667 event pairs, 114 based on Foata normal form. 63/560 useless extension candidates. Maximal degree in co-relation 1247. Up to 302 conditions per place. [2024-10-13 16:49:37,392 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 32 selfloop transitions, 6 changer transitions 6/57 dead transitions. [2024-10-13 16:49:37,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 305 flow [2024-10-13 16:49:37,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-10-13 16:49:37,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-10-13 16:49:37,393 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 202 flow. Second operand 4 states and 99 transitions. [2024-10-13 16:49:37,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 305 flow [2024-10-13 16:49:37,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:37,395 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 192 flow [2024-10-13 16:49:37,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-10-13 16:49:37,396 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2024-10-13 16:49:37,396 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 192 flow [2024-10-13 16:49:37,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:37,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:37,396 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:49:37,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:49:37,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:37,603 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:37,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:37,603 INFO L85 PathProgramCache]: Analyzing trace with hash -774175756, now seen corresponding path program 2 times [2024-10-13 16:49:37,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:37,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122503274] [2024-10-13 16:49:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:37,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:37,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:37,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122503274] [2024-10-13 16:49:37,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122503274] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:37,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427899597] [2024-10-13 16:49:37,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:37,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:37,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:37,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:37,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:49:37,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:49:37,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:37,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:49:37,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:49:37,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:49:37,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427899597] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:37,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:37,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:49:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633251730] [2024-10-13 16:49:37,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:37,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:49:37,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:49:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:49:37,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:49:37,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 192 flow. Second operand has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:37,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:37,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:49:37,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:38,060 INFO L124 PetriNetUnfolderBase]: 125/320 cut-off events. [2024-10-13 16:49:38,061 INFO L125 PetriNetUnfolderBase]: For 391/412 co-relation queries the response was YES. [2024-10-13 16:49:38,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 320 events. 125/320 cut-off events. For 391/412 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1289 event pairs, 82 based on Foata normal form. 23/307 useless extension candidates. Maximal degree in co-relation 751. Up to 208 conditions per place. [2024-10-13 16:49:38,063 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 19 selfloop transitions, 18 changer transitions 0/49 dead transitions. [2024-10-13 16:49:38,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 49 transitions, 272 flow [2024-10-13 16:49:38,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:49:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:49:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 247 transitions. [2024-10-13 16:49:38,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37537993920972645 [2024-10-13 16:49:38,065 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 192 flow. Second operand 14 states and 247 transitions. [2024-10-13 16:49:38,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 49 transitions, 272 flow [2024-10-13 16:49:38,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 49 transitions, 246 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-13 16:49:38,067 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 208 flow [2024-10-13 16:49:38,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=208, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-10-13 16:49:38,068 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-10-13 16:49:38,068 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 208 flow [2024-10-13 16:49:38,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:38,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:38,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:38,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:49:38,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 16:49:38,273 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:38,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:38,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1244029632, now seen corresponding path program 1 times [2024-10-13 16:49:38,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:38,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341404811] [2024-10-13 16:49:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:38,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:49:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341404811] [2024-10-13 16:49:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341404811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:38,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:38,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908491301] [2024-10-13 16:49:38,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:38,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:38,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:38,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:49:38,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-10-13 16:49:38,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:38,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:38,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-10-13 16:49:38,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:38,377 INFO L124 PetriNetUnfolderBase]: 158/335 cut-off events. [2024-10-13 16:49:38,377 INFO L125 PetriNetUnfolderBase]: For 179/196 co-relation queries the response was YES. [2024-10-13 16:49:38,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 335 events. 158/335 cut-off events. For 179/196 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1340 event pairs, 96 based on Foata normal form. 19/315 useless extension candidates. Maximal degree in co-relation 786. Up to 241 conditions per place. [2024-10-13 16:49:38,379 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 45 selfloop transitions, 2 changer transitions 2/59 dead transitions. [2024-10-13 16:49:38,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 330 flow [2024-10-13 16:49:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-10-13 16:49:38,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-10-13 16:49:38,380 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 208 flow. Second operand 3 states and 81 transitions. [2024-10-13 16:49:38,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 330 flow [2024-10-13 16:49:38,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 262 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-13 16:49:38,381 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 148 flow [2024-10-13 16:49:38,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-10-13 16:49:38,382 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2024-10-13 16:49:38,382 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 148 flow [2024-10-13 16:49:38,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:38,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:38,382 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:38,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:49:38,382 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:38,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:38,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1175978747, now seen corresponding path program 1 times [2024-10-13 16:49:38,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:38,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181583817] [2024-10-13 16:49:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:38,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:38,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:38,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181583817] [2024-10-13 16:49:38,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181583817] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:38,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144214510] [2024-10-13 16:49:38,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:38,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:38,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:38,778 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:38,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:49:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:38,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-13 16:49:38,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:38,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:49:39,249 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 16:49:39,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-13 16:49:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:39,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:39,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-10-13 16:49:39,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-10-13 16:49:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:39,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144214510] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:39,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:39,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-13 16:49:39,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488589273] [2024-10-13 16:49:39,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:39,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 16:49:39,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:39,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 16:49:39,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-10-13 16:49:39,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 16:49:39,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 148 flow. Second operand has 20 states, 20 states have (on average 14.4) internal successors, (288), 20 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:39,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:39,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 16:49:39,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:40,524 INFO L124 PetriNetUnfolderBase]: 486/959 cut-off events. [2024-10-13 16:49:40,524 INFO L125 PetriNetUnfolderBase]: For 454/507 co-relation queries the response was YES. [2024-10-13 16:49:40,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 959 events. 486/959 cut-off events. For 454/507 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4809 event pairs, 94 based on Foata normal form. 53/895 useless extension candidates. Maximal degree in co-relation 2245. Up to 238 conditions per place. [2024-10-13 16:49:40,528 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 93 selfloop transitions, 26 changer transitions 4/133 dead transitions. [2024-10-13 16:49:40,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 133 transitions, 648 flow [2024-10-13 16:49:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:49:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:49:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 295 transitions. [2024-10-13 16:49:40,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2024-10-13 16:49:40,530 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 148 flow. Second operand 15 states and 295 transitions. [2024-10-13 16:49:40,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 133 transitions, 648 flow [2024-10-13 16:49:40,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 133 transitions, 644 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:40,533 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 283 flow [2024-10-13 16:49:40,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=283, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-10-13 16:49:40,534 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 26 predicate places. [2024-10-13 16:49:40,534 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 283 flow [2024-10-13 16:49:40,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.4) internal successors, (288), 20 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:40,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:40,535 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:40,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 16:49:40,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:40,736 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:40,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:40,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2095603277, now seen corresponding path program 1 times [2024-10-13 16:49:40,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:40,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32015221] [2024-10-13 16:49:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:40,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:41,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32015221] [2024-10-13 16:49:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32015221] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:41,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850610361] [2024-10-13 16:49:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:41,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:41,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:41,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:41,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:49:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:41,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 16:49:41,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:41,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:49:41,474 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 16:49:41,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-13 16:49:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:41,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:41,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-13 16:49:41,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-10-13 16:49:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:41,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850610361] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:41,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:41,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2024-10-13 16:49:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125768779] [2024-10-13 16:49:41,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:41,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-13 16:49:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-13 16:49:41,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-10-13 16:49:42,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-13 16:49:42,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 283 flow. Second operand has 22 states, 22 states have (on average 15.181818181818182) internal successors, (334), 22 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:42,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:42,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-13 16:49:42,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:43,795 INFO L124 PetriNetUnfolderBase]: 499/1070 cut-off events. [2024-10-13 16:49:43,795 INFO L125 PetriNetUnfolderBase]: For 1716/1777 co-relation queries the response was YES. [2024-10-13 16:49:43,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3061 conditions, 1070 events. 499/1070 cut-off events. For 1716/1777 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5749 event pairs, 34 based on Foata normal form. 93/1105 useless extension candidates. Maximal degree in co-relation 3043. Up to 235 conditions per place. [2024-10-13 16:49:43,801 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 140 selfloop transitions, 41 changer transitions 4/197 dead transitions. [2024-10-13 16:49:43,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 197 transitions, 1162 flow [2024-10-13 16:49:43,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 16:49:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 16:49:43,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 492 transitions. [2024-10-13 16:49:43,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43617021276595747 [2024-10-13 16:49:43,804 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 283 flow. Second operand 24 states and 492 transitions. [2024-10-13 16:49:43,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 197 transitions, 1162 flow [2024-10-13 16:49:43,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 197 transitions, 1120 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-13 16:49:43,808 INFO L231 Difference]: Finished difference. Result has 98 places, 76 transitions, 510 flow [2024-10-13 16:49:43,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=510, PETRI_PLACES=98, PETRI_TRANSITIONS=76} [2024-10-13 16:49:43,810 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-10-13 16:49:43,810 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 76 transitions, 510 flow [2024-10-13 16:49:43,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 15.181818181818182) internal successors, (334), 22 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:43,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:43,810 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:43,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 16:49:44,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:44,014 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:44,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:44,014 INFO L85 PathProgramCache]: Analyzing trace with hash 795734115, now seen corresponding path program 2 times [2024-10-13 16:49:44,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:44,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714462107] [2024-10-13 16:49:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:44,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:44,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714462107] [2024-10-13 16:49:44,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714462107] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792794318] [2024-10-13 16:49:44,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:44,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:44,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:44,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:44,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:49:44,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:49:44,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:44,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 16:49:44,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:49:44,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:44,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792794318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:44,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:44,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 14 [2024-10-13 16:49:44,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128778650] [2024-10-13 16:49:44,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:44,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:49:44,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:44,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:49:44,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-13 16:49:44,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-10-13 16:49:44,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 76 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:44,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:44,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-10-13 16:49:44,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:45,079 INFO L124 PetriNetUnfolderBase]: 561/1276 cut-off events. [2024-10-13 16:49:45,079 INFO L125 PetriNetUnfolderBase]: For 4106/4139 co-relation queries the response was YES. [2024-10-13 16:49:45,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 1276 events. 561/1276 cut-off events. For 4106/4139 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7487 event pairs, 34 based on Foata normal form. 43/1257 useless extension candidates. Maximal degree in co-relation 4289. Up to 275 conditions per place. [2024-10-13 16:49:45,088 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 83 selfloop transitions, 19 changer transitions 2/117 dead transitions. [2024-10-13 16:49:45,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 117 transitions, 927 flow [2024-10-13 16:49:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:49:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:49:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-10-13 16:49:45,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-10-13 16:49:45,090 INFO L175 Difference]: Start difference. First operand has 98 places, 76 transitions, 510 flow. Second operand 7 states and 178 transitions. [2024-10-13 16:49:45,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 117 transitions, 927 flow [2024-10-13 16:49:45,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 832 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-10-13 16:49:45,099 INFO L231 Difference]: Finished difference. Result has 96 places, 79 transitions, 502 flow [2024-10-13 16:49:45,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2024-10-13 16:49:45,099 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2024-10-13 16:49:45,100 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 502 flow [2024-10-13 16:49:45,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:45,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:45,100 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:45,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 16:49:45,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 16:49:45,301 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:45,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:45,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1523808993, now seen corresponding path program 1 times [2024-10-13 16:49:45,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:45,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312997663] [2024-10-13 16:49:45,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:45,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:45,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:45,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312997663] [2024-10-13 16:49:45,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312997663] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:45,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317591864] [2024-10-13 16:49:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:45,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:45,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:45,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:45,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:49:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:45,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:49:45,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:45,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:45,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317591864] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:45,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:45,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-13 16:49:45,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126578668] [2024-10-13 16:49:45,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:45,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:49:45,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:45,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:49:45,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:49:45,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-13 16:49:45,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 502 flow. Second operand has 18 states, 18 states have (on average 14.88888888888889) internal successors, (268), 18 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:45,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:45,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-13 16:49:45,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:46,043 INFO L124 PetriNetUnfolderBase]: 508/1223 cut-off events. [2024-10-13 16:49:46,043 INFO L125 PetriNetUnfolderBase]: For 4700/4714 co-relation queries the response was YES. [2024-10-13 16:49:46,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4238 conditions, 1223 events. 508/1223 cut-off events. For 4700/4714 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7251 event pairs, 278 based on Foata normal form. 24/1187 useless extension candidates. Maximal degree in co-relation 4206. Up to 522 conditions per place. [2024-10-13 16:49:46,050 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 31 selfloop transitions, 12 changer transitions 55/112 dead transitions. [2024-10-13 16:49:46,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 112 transitions, 865 flow [2024-10-13 16:49:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:49:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:49:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-10-13 16:49:46,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42789598108747046 [2024-10-13 16:49:46,052 INFO L175 Difference]: Start difference. First operand has 96 places, 79 transitions, 502 flow. Second operand 9 states and 181 transitions. [2024-10-13 16:49:46,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 112 transitions, 865 flow [2024-10-13 16:49:46,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 840 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 16:49:46,064 INFO L231 Difference]: Finished difference. Result has 102 places, 57 transitions, 317 flow [2024-10-13 16:49:46,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=317, PETRI_PLACES=102, PETRI_TRANSITIONS=57} [2024-10-13 16:49:46,064 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-10-13 16:49:46,065 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 57 transitions, 317 flow [2024-10-13 16:49:46,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.88888888888889) internal successors, (268), 18 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:46,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:46,065 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:46,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 16:49:46,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 16:49:46,271 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:46,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1102045723, now seen corresponding path program 2 times [2024-10-13 16:49:46,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:46,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806548034] [2024-10-13 16:49:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:46,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:46,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806548034] [2024-10-13 16:49:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806548034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412836755] [2024-10-13 16:49:46,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:46,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:46,848 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:46,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:49:46,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:49:46,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:46,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:49:46,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:49:47,002 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412836755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:47,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:47,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 14 [2024-10-13 16:49:47,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985253841] [2024-10-13 16:49:47,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:47,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:49:47,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:49:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-13 16:49:47,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-10-13 16:49:47,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 57 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:47,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:47,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-10-13 16:49:47,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:47,159 INFO L124 PetriNetUnfolderBase]: 330/766 cut-off events. [2024-10-13 16:49:47,159 INFO L125 PetriNetUnfolderBase]: For 2634/2638 co-relation queries the response was YES. [2024-10-13 16:49:47,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2600 conditions, 766 events. 330/766 cut-off events. For 2634/2638 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3870 event pairs, 48 based on Foata normal form. 22/750 useless extension candidates. Maximal degree in co-relation 2568. Up to 262 conditions per place. [2024-10-13 16:49:47,164 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 63 selfloop transitions, 7 changer transitions 2/85 dead transitions. [2024-10-13 16:49:47,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 85 transitions, 598 flow [2024-10-13 16:49:47,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:47,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-10-13 16:49:47,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5354609929078015 [2024-10-13 16:49:47,165 INFO L175 Difference]: Start difference. First operand has 102 places, 57 transitions, 317 flow. Second operand 6 states and 151 transitions. [2024-10-13 16:49:47,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 85 transitions, 598 flow [2024-10-13 16:49:47,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 502 flow, removed 36 selfloop flow, removed 16 redundant places. [2024-10-13 16:49:47,169 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 294 flow [2024-10-13 16:49:47,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2024-10-13 16:49:47,169 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2024-10-13 16:49:47,169 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 294 flow [2024-10-13 16:49:47,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:47,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:47,170 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:47,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 16:49:47,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 16:49:47,373 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:47,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:47,374 INFO L85 PathProgramCache]: Analyzing trace with hash 154835784, now seen corresponding path program 2 times [2024-10-13 16:49:47,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:47,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014907424] [2024-10-13 16:49:47,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:47,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:49:47,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:47,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014907424] [2024-10-13 16:49:47,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014907424] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:47,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140273214] [2024-10-13 16:49:47,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:49:47,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:47,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:47,479 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:47,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:49:47,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:49:47,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:49:47,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-13 16:49:47,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:47,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:49:48,133 INFO L349 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2024-10-13 16:49:48,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 15 [2024-10-13 16:49:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:48,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:48,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2024-10-13 16:49:48,792 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-10-13 16:49:48,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 93 [2024-10-13 16:49:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:49,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140273214] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:49,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:49,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 12] total 30 [2024-10-13 16:49:49,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654288138] [2024-10-13 16:49:49,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:49,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-13 16:49:49,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:49,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-13 16:49:49,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2024-10-13 16:49:49,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 47 [2024-10-13 16:49:49,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 294 flow. Second operand has 31 states, 31 states have (on average 10.258064516129032) internal successors, (318), 31 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:49,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:49,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 47 [2024-10-13 16:49:49,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:54,705 INFO L124 PetriNetUnfolderBase]: 2835/5267 cut-off events. [2024-10-13 16:49:54,705 INFO L125 PetriNetUnfolderBase]: For 10953/10953 co-relation queries the response was YES. [2024-10-13 16:49:54,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15789 conditions, 5267 events. 2835/5267 cut-off events. For 10953/10953 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 31747 event pairs, 185 based on Foata normal form. 366/5396 useless extension candidates. Maximal degree in co-relation 15767. Up to 966 conditions per place. [2024-10-13 16:49:54,730 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 395 selfloop transitions, 201 changer transitions 154/757 dead transitions. [2024-10-13 16:49:54,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 757 transitions, 4594 flow [2024-10-13 16:49:54,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-10-13 16:49:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2024-10-13 16:49:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 1557 transitions. [2024-10-13 16:49:54,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3312765957446808 [2024-10-13 16:49:54,738 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 294 flow. Second operand 100 states and 1557 transitions. [2024-10-13 16:49:54,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 757 transitions, 4594 flow [2024-10-13 16:49:54,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 757 transitions, 4551 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:49:54,756 INFO L231 Difference]: Finished difference. Result has 212 places, 267 transitions, 2346 flow [2024-10-13 16:49:54,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=2346, PETRI_PLACES=212, PETRI_TRANSITIONS=267} [2024-10-13 16:49:54,757 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 167 predicate places. [2024-10-13 16:49:54,757 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 267 transitions, 2346 flow [2024-10-13 16:49:54,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.258064516129032) internal successors, (318), 31 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:54,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:54,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:54,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 16:49:54,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 16:49:54,962 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:54,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1754624489, now seen corresponding path program 1 times [2024-10-13 16:49:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:54,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737065351] [2024-10-13 16:49:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:54,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 16:49:55,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:55,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737065351] [2024-10-13 16:49:55,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737065351] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:55,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:55,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:49:55,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031985846] [2024-10-13 16:49:55,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:55,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:55,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:55,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:55,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-10-13 16:49:55,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 267 transitions, 2346 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:55,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:55,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-10-13 16:49:55,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:55,613 INFO L124 PetriNetUnfolderBase]: 2455/4721 cut-off events. [2024-10-13 16:49:55,613 INFO L125 PetriNetUnfolderBase]: For 50703/51041 co-relation queries the response was YES. [2024-10-13 16:49:55,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22378 conditions, 4721 events. 2455/4721 cut-off events. For 50703/51041 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30814 event pairs, 272 based on Foata normal form. 178/4665 useless extension candidates. Maximal degree in co-relation 22316. Up to 2236 conditions per place. [2024-10-13 16:49:55,653 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 299 selfloop transitions, 4 changer transitions 0/323 dead transitions. [2024-10-13 16:49:55,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 323 transitions, 3569 flow [2024-10-13 16:49:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-13 16:49:55,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-10-13 16:49:55,655 INFO L175 Difference]: Start difference. First operand has 212 places, 267 transitions, 2346 flow. Second operand 4 states and 93 transitions. [2024-10-13 16:49:55,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 323 transitions, 3569 flow [2024-10-13 16:49:55,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 323 transitions, 2858 flow, removed 312 selfloop flow, removed 18 redundant places. [2024-10-13 16:49:55,757 INFO L231 Difference]: Finished difference. Result has 176 places, 256 transitions, 1701 flow [2024-10-13 16:49:55,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1701, PETRI_PLACES=176, PETRI_TRANSITIONS=256} [2024-10-13 16:49:55,757 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 131 predicate places. [2024-10-13 16:49:55,757 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 256 transitions, 1701 flow [2024-10-13 16:49:55,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:55,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:55,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:55,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 16:49:55,759 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:49:55,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:55,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1973371974, now seen corresponding path program 1 times [2024-10-13 16:49:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:55,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721690047] [2024-10-13 16:49:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:55,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:56,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:56,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721690047] [2024-10-13 16:49:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721690047] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:56,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045492530] [2024-10-13 16:49:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:56,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:56,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:56,384 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:56,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 16:49:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:56,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-13 16:49:56,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:56,835 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 16:49:56,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-13 16:49:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:56,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:56,995 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 16:49:56,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-10-13 16:49:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:57,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045492530] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:57,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:57,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2024-10-13 16:49:57,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123318054] [2024-10-13 16:49:57,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:57,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-13 16:49:57,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:57,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-13 16:49:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1736, Unknown=0, NotChecked=0, Total=1892 [2024-10-13 16:49:58,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-10-13 16:49:58,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 256 transitions, 1701 flow. Second operand has 44 states, 44 states have (on average 12.772727272727273) internal successors, (562), 44 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:58,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:58,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-10-13 16:49:58,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:05,366 INFO L124 PetriNetUnfolderBase]: 7388/14712 cut-off events. [2024-10-13 16:50:05,366 INFO L125 PetriNetUnfolderBase]: For 179645/180065 co-relation queries the response was YES. [2024-10-13 16:50:05,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67232 conditions, 14712 events. 7388/14712 cut-off events. For 179645/180065 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 110382 event pairs, 461 based on Foata normal form. 744/14736 useless extension candidates. Maximal degree in co-relation 67173. Up to 2612 conditions per place. [2024-10-13 16:50:05,468 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 666 selfloop transitions, 588 changer transitions 15/1292 dead transitions. [2024-10-13 16:50:05,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1292 transitions, 11166 flow [2024-10-13 16:50:05,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-10-13 16:50:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2024-10-13 16:50:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 1870 transitions. [2024-10-13 16:50:05,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3718433088089083 [2024-10-13 16:50:05,473 INFO L175 Difference]: Start difference. First operand has 176 places, 256 transitions, 1701 flow. Second operand 107 states and 1870 transitions. [2024-10-13 16:50:05,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1292 transitions, 11166 flow [2024-10-13 16:50:06,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 1292 transitions, 11160 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 16:50:06,020 INFO L231 Difference]: Finished difference. Result has 331 places, 841 transitions, 9314 flow [2024-10-13 16:50:06,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=9314, PETRI_PLACES=331, PETRI_TRANSITIONS=841} [2024-10-13 16:50:06,021 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 286 predicate places. [2024-10-13 16:50:06,021 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 841 transitions, 9314 flow [2024-10-13 16:50:06,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 12.772727272727273) internal successors, (562), 44 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:06,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:06,022 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:06,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 16:50:06,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:06,223 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:50:06,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:06,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1642519022, now seen corresponding path program 2 times [2024-10-13 16:50:06,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:06,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657524219] [2024-10-13 16:50:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:06,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:06,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:06,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657524219] [2024-10-13 16:50:06,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657524219] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:06,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098938561] [2024-10-13 16:50:06,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:50:06,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:06,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:06,752 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:06,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 16:50:06,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:50:06,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:06,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 16:50:06,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:06,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-13 16:50:07,201 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 16:50:07,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-13 16:50:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:07,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:07,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-10-13 16:50:07,897 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-13 16:50:07,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-10-13 16:50:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098938561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:08,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 40 [2024-10-13 16:50:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536457989] [2024-10-13 16:50:08,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:08,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-13 16:50:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-13 16:50:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2024-10-13 16:50:08,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-10-13 16:50:08,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 841 transitions, 9314 flow. Second operand has 42 states, 42 states have (on average 12.857142857142858) internal successors, (540), 42 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:08,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:08,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-10-13 16:50:08,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:18,926 INFO L124 PetriNetUnfolderBase]: 10326/20608 cut-off events. [2024-10-13 16:50:18,926 INFO L125 PetriNetUnfolderBase]: For 836590/837234 co-relation queries the response was YES. [2024-10-13 16:50:19,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136975 conditions, 20608 events. 10326/20608 cut-off events. For 836590/837234 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 165072 event pairs, 1308 based on Foata normal form. 338/19940 useless extension candidates. Maximal degree in co-relation 136865. Up to 10192 conditions per place. [2024-10-13 16:50:19,243 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 1041 selfloop transitions, 560 changer transitions 44/1668 dead transitions. [2024-10-13 16:50:19,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1668 transitions, 22106 flow [2024-10-13 16:50:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-10-13 16:50:19,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2024-10-13 16:50:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 1275 transitions. [2024-10-13 16:50:19,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3716117749927135 [2024-10-13 16:50:19,246 INFO L175 Difference]: Start difference. First operand has 331 places, 841 transitions, 9314 flow. Second operand 73 states and 1275 transitions. [2024-10-13 16:50:19,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1668 transitions, 22106 flow [2024-10-13 16:50:25,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 1668 transitions, 18482 flow, removed 1778 selfloop flow, removed 19 redundant places. [2024-10-13 16:50:25,184 INFO L231 Difference]: Finished difference. Result has 425 places, 1212 transitions, 13708 flow [2024-10-13 16:50:25,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7437, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=13708, PETRI_PLACES=425, PETRI_TRANSITIONS=1212} [2024-10-13 16:50:25,185 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 380 predicate places. [2024-10-13 16:50:25,185 INFO L471 AbstractCegarLoop]: Abstraction has has 425 places, 1212 transitions, 13708 flow [2024-10-13 16:50:25,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 12.857142857142858) internal successors, (540), 42 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:25,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:25,186 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:25,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:25,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-10-13 16:50:25,386 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:50:25,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2009883110, now seen corresponding path program 3 times [2024-10-13 16:50:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:25,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599916967] [2024-10-13 16:50:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:25,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:25,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:25,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599916967] [2024-10-13 16:50:25,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599916967] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:25,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919380975] [2024-10-13 16:50:25,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:50:25,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:25,953 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:25,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 16:50:26,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 16:50:26,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:26,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 16:50:26,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:50:26,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:26,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:26,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-10-13 16:50:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:50:26,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919380975] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:26,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:26,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 22 [2024-10-13 16:50:26,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364862903] [2024-10-13 16:50:26,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:26,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 16:50:26,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 16:50:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2024-10-13 16:50:26,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-13 16:50:26,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1212 transitions, 13708 flow. Second operand has 24 states, 24 states have (on average 15.375) internal successors, (369), 24 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:26,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:26,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-13 16:50:26,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:35,245 INFO L124 PetriNetUnfolderBase]: 12825/25455 cut-off events. [2024-10-13 16:50:35,245 INFO L125 PetriNetUnfolderBase]: For 1183224/1183898 co-relation queries the response was YES. [2024-10-13 16:50:35,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164409 conditions, 25455 events. 12825/25455 cut-off events. For 1183224/1183898 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 209722 event pairs, 1865 based on Foata normal form. 310/24465 useless extension candidates. Maximal degree in co-relation 164264. Up to 13207 conditions per place. [2024-10-13 16:50:36,034 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 1323 selfloop transitions, 440 changer transitions 31/1817 dead transitions. [2024-10-13 16:50:36,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1817 transitions, 24296 flow [2024-10-13 16:50:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-13 16:50:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-13 16:50:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 697 transitions. [2024-10-13 16:50:36,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44938749194068345 [2024-10-13 16:50:36,037 INFO L175 Difference]: Start difference. First operand has 425 places, 1212 transitions, 13708 flow. Second operand 33 states and 697 transitions. [2024-10-13 16:50:36,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1817 transitions, 24296 flow [2024-10-13 16:50:42,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 1817 transitions, 22621 flow, removed 815 selfloop flow, removed 19 redundant places. [2024-10-13 16:50:42,671 INFO L231 Difference]: Finished difference. Result has 447 places, 1450 transitions, 17838 flow [2024-10-13 16:50:42,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12815, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=856, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=17838, PETRI_PLACES=447, PETRI_TRANSITIONS=1450} [2024-10-13 16:50:42,673 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 402 predicate places. [2024-10-13 16:50:42,673 INFO L471 AbstractCegarLoop]: Abstraction has has 447 places, 1450 transitions, 17838 flow [2024-10-13 16:50:42,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.375) internal successors, (369), 24 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:42,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:42,673 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:42,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-13 16:50:42,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:42,874 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:50:42,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash -936414798, now seen corresponding path program 4 times [2024-10-13 16:50:42,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:42,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450764347] [2024-10-13 16:50:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:42,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:43,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:43,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450764347] [2024-10-13 16:50:43,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450764347] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:43,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629661118] [2024-10-13 16:50:43,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 16:50:43,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:43,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:43,373 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:43,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 16:50:43,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 16:50:43,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:43,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-13 16:50:43,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:43,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:50:44,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 16:50:44,122 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-13 16:50:44,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:50:44,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 15 [2024-10-13 16:50:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:44,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:44,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-10-13 16:50:44,844 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-10-13 16:50:44,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 135 [2024-10-13 16:50:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:45,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629661118] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:45,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:45,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-10-13 16:50:45,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883765895] [2024-10-13 16:50:45,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:45,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-13 16:50:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-13 16:50:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1863, Unknown=0, NotChecked=0, Total=2070 [2024-10-13 16:50:46,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-10-13 16:50:46,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1450 transitions, 17838 flow. Second operand has 46 states, 46 states have (on average 12.695652173913043) internal successors, (584), 46 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:50:46,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:46,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-10-13 16:50:46,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand