./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-horseshoe.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 ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:06:47,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:06:47,237 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:06:47,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:06:47,246 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:06:47,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:06:47,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:06:47,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:06:47,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:06:47,283 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:06:47,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:06:47,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:06:47,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:06:47,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:06:47,285 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:06:47,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:06:47,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:06:47,286 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:06:47,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:06:47,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:06:47,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:06:47,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:06:47,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:06:47,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:06:47,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:06:47,290 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:06:47,290 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:06:47,290 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:06:47,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:06:47,291 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:06:47,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:06:47,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:06:47,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:06:47,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:06:47,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:47,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:06:47,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:06:47,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:06:47,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:06:47,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:06:47,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:06:47,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:06:47,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:06:47,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:06:47,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d [2024-11-19 14:06:47,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:06:47,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:06:47,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:06:47,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:06:47,574 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:06:47,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-11-19 14:06:49,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:06:49,232 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:06:49,232 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-11-19 14:06:49,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/537a2d4f7/b23cd119e52f43b7bb396fb7347aac8b/FLAG89f5d08b6 [2024-11-19 14:06:49,597 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/537a2d4f7/b23cd119e52f43b7bb396fb7347aac8b [2024-11-19 14:06:49,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:06:49,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:06:49,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:49,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:06:49,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:06:49,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:49,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8dfd03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49, skipping insertion in model container [2024-11-19 14:06:49,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:49,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:06:49,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:49,914 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:06:49,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:49,978 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:06:49,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49 WrapperNode [2024-11-19 14:06:49,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:49,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:49,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:06:49,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:06:49,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:49,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,039 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 267 [2024-11-19 14:06:50,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:50,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:06:50,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:06:50,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:06:50,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,079 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 14:06:50,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,095 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:06:50,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:06:50,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:06:50,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:06:50,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (1/1) ... [2024-11-19 14:06:50,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:50,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:50,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:06:50,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:06:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:06:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:06:50,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:06:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:06:50,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:06:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:06:50,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:06:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:06:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:06:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:06:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:06:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:06:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:06:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:06:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:06:50,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:06:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:06:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:06:50,195 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:06:50,300 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:06:50,302 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:06:50,782 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:06:50,783 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:06:51,157 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:06:51,158 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-19 14:06:51,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:51 BoogieIcfgContainer [2024-11-19 14:06:51,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:06:51,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:06:51,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:06:51,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:06:51,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:06:49" (1/3) ... [2024-11-19 14:06:51,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7991e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:51, skipping insertion in model container [2024-11-19 14:06:51,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:49" (2/3) ... [2024-11-19 14:06:51,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7991e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:51, skipping insertion in model container [2024-11-19 14:06:51,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:51" (3/3) ... [2024-11-19 14:06:51,172 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2024-11-19 14:06:51,191 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:06:51,191 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-19 14:06:51,191 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:06:51,270 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:06:51,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 79 transitions, 179 flow [2024-11-19 14:06:51,362 INFO L124 PetriNetUnfolderBase]: 7/76 cut-off events. [2024-11-19 14:06:51,362 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:06:51,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 7/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 220 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-19 14:06:51,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 79 transitions, 179 flow [2024-11-19 14:06:51,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 75 transitions, 168 flow [2024-11-19 14:06:51,388 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:06:51,398 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;@38fcd3fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:06:51,399 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-11-19 14:06:51,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:06:51,403 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:06:51,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:06:51,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:51,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:06:51,405 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:51,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:51,410 INFO L85 PathProgramCache]: Analyzing trace with hash 812992, now seen corresponding path program 1 times [2024-11-19 14:06:51,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:51,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048546471] [2024-11-19 14:06:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:51,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:51,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:51,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048546471] [2024-11-19 14:06:51,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048546471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:51,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:51,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:51,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568666770] [2024-11-19 14:06:51,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:51,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:51,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:51,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-19 14:06:51,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:51,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:51,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-19 14:06:51,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:52,400 INFO L124 PetriNetUnfolderBase]: 2722/4569 cut-off events. [2024-11-19 14:06:52,401 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-19 14:06:52,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8613 conditions, 4569 events. 2722/4569 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29882 event pairs, 2432 based on Foata normal form. 291/3432 useless extension candidates. Maximal degree in co-relation 8140. Up to 3790 conditions per place. [2024-11-19 14:06:52,454 INFO L140 encePairwiseOnDemand]: 61/79 looper letters, 41 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-11-19 14:06:52,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 262 flow [2024-11-19 14:06:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2024-11-19 14:06:52,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5537974683544303 [2024-11-19 14:06:52,470 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 168 flow. Second operand 4 states and 175 transitions. [2024-11-19 14:06:52,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 262 flow [2024-11-19 14:06:52,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 14:06:52,487 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 202 flow [2024-11-19 14:06:52,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-11-19 14:06:52,495 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-11-19 14:06:52,495 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 202 flow [2024-11-19 14:06:52,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:52,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:52,496 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:06:52,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:06:52,496 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:52,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1549173020, now seen corresponding path program 1 times [2024-11-19 14:06:52,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:52,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101625346] [2024-11-19 14:06:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:52,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:52,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:52,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101625346] [2024-11-19 14:06:52,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101625346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:52,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044207349] [2024-11-19 14:06:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:52,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:52,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:52,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:52,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:06:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:52,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:52,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:52,906 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:52,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044207349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:52,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:52,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:06:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066868457] [2024-11-19 14:06:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:52,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:06:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:52,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:06:52,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:06:52,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-19 14:06:52,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:52,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:52,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-19 14:06:52,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:53,476 INFO L124 PetriNetUnfolderBase]: 2722/4567 cut-off events. [2024-11-19 14:06:53,477 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-19 14:06:53,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 4567 events. 2722/4567 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29890 event pairs, 2432 based on Foata normal form. 2/3144 useless extension candidates. Maximal degree in co-relation 8425. Up to 3780 conditions per place. [2024-11-19 14:06:53,511 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 34 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-11-19 14:06:53,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 286 flow [2024-11-19 14:06:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:06:53,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:06:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-11-19 14:06:53,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46835443037974683 [2024-11-19 14:06:53,514 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 202 flow. Second operand 6 states and 222 transitions. [2024-11-19 14:06:53,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 286 flow [2024-11-19 14:06:53,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:06:53,516 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 218 flow [2024-11-19 14:06:53,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2024-11-19 14:06:53,517 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-11-19 14:06:53,517 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 218 flow [2024-11-19 14:06:53,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:53,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:53,518 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:06:53,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:06:53,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:53,722 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:53,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:53,723 INFO L85 PathProgramCache]: Analyzing trace with hash -779722574, now seen corresponding path program 1 times [2024-11-19 14:06:53,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:53,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34575248] [2024-11-19 14:06:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:53,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:53,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:53,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34575248] [2024-11-19 14:06:53,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34575248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:53,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667354297] [2024-11-19 14:06:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:53,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:53,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:53,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:53,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:06:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:53,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:06:53,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:53,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:54,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667354297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:54,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:54,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:06:54,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769223737] [2024-11-19 14:06:54,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:54,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:06:54,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:54,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:06:54,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:06:54,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-19 14:06:54,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:54,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:54,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-19 14:06:54,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:54,618 INFO L124 PetriNetUnfolderBase]: 2728/4591 cut-off events. [2024-11-19 14:06:54,618 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-19 14:06:54,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8569 conditions, 4591 events. 2728/4591 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 30116 event pairs, 2432 based on Foata normal form. 6/3171 useless extension candidates. Maximal degree in co-relation 8427. Up to 3791 conditions per place. [2024-11-19 14:06:54,655 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 39 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-11-19 14:06:54,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 90 transitions, 460 flow [2024-11-19 14:06:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:06:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:06:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 360 transitions. [2024-11-19 14:06:54,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45569620253164556 [2024-11-19 14:06:54,659 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 218 flow. Second operand 10 states and 360 transitions. [2024-11-19 14:06:54,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 90 transitions, 460 flow [2024-11-19 14:06:54,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 402 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:54,662 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 358 flow [2024-11-19 14:06:54,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-11-19 14:06:54,663 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-11-19 14:06:54,663 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 358 flow [2024-11-19 14:06:54,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:54,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:54,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:54,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:06:54,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 14:06:54,865 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:54,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash -698766873, now seen corresponding path program 1 times [2024-11-19 14:06:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:54,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742901374] [2024-11-19 14:06:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:54,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:55,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:55,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742901374] [2024-11-19 14:06:55,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742901374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:55,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:55,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:55,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734160381] [2024-11-19 14:06:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:55,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:55,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:55,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-19 14:06:55,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:55,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:55,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-19 14:06:55,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:55,551 INFO L124 PetriNetUnfolderBase]: 2865/4869 cut-off events. [2024-11-19 14:06:55,551 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-19 14:06:55,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 4869 events. 2865/4869 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 31926 event pairs, 2559 based on Foata normal form. 98/3605 useless extension candidates. Maximal degree in co-relation 9041. Up to 3806 conditions per place. [2024-11-19 14:06:55,591 INFO L140 encePairwiseOnDemand]: 68/79 looper letters, 85 selfloop transitions, 5 changer transitions 1/119 dead transitions. [2024-11-19 14:06:55,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 674 flow [2024-11-19 14:06:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-11-19 14:06:55,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5873417721518988 [2024-11-19 14:06:55,594 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 358 flow. Second operand 5 states and 232 transitions. [2024-11-19 14:06:55,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 674 flow [2024-11-19 14:06:55,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 119 transitions, 640 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:55,601 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 377 flow [2024-11-19 14:06:55,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2024-11-19 14:06:55,602 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-11-19 14:06:55,603 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 377 flow [2024-11-19 14:06:55,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:55,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:55,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:55,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:06:55,605 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:55,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:55,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1450275061, now seen corresponding path program 1 times [2024-11-19 14:06:55,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:55,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954435513] [2024-11-19 14:06:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:55,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:55,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:55,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954435513] [2024-11-19 14:06:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954435513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440457112] [2024-11-19 14:06:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:55,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:55,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:55,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:55,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:06:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:55,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:06:55,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:55,886 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:55,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440457112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:55,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:55,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-19 14:06:55,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868902563] [2024-11-19 14:06:55,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:55,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:55,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:55,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:55,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:06:55,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-19 14:06:55,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:55,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:55,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-19 14:06:55,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:56,187 INFO L124 PetriNetUnfolderBase]: 1998/3413 cut-off events. [2024-11-19 14:06:56,187 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2024-11-19 14:06:56,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6801 conditions, 3413 events. 1998/3413 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 20788 event pairs, 1754 based on Foata normal form. 0/2716 useless extension candidates. Maximal degree in co-relation 6706. Up to 2847 conditions per place. [2024-11-19 14:06:56,208 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 60 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2024-11-19 14:06:56,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 487 flow [2024-11-19 14:06:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-19 14:06:56,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5780590717299579 [2024-11-19 14:06:56,209 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 377 flow. Second operand 3 states and 137 transitions. [2024-11-19 14:06:56,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 487 flow [2024-11-19 14:06:56,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 483 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:56,214 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 363 flow [2024-11-19 14:06:56,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2024-11-19 14:06:56,217 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2024-11-19 14:06:56,218 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 363 flow [2024-11-19 14:06:56,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:56,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:56,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:56,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:06:56,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:56,419 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:56,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash 971362461, now seen corresponding path program 1 times [2024-11-19 14:06:56,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:56,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978593323] [2024-11-19 14:06:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:56,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:56,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:56,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978593323] [2024-11-19 14:06:56,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978593323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:56,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:56,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:06:56,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661277602] [2024-11-19 14:06:56,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:56,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:56,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:56,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:56,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:56,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-19 14:06:56,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:56,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:56,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-19 14:06:56,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:56,805 INFO L124 PetriNetUnfolderBase]: 2002/3445 cut-off events. [2024-11-19 14:06:56,805 INFO L125 PetriNetUnfolderBase]: For 519/519 co-relation queries the response was YES. [2024-11-19 14:06:56,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 3445 events. 2002/3445 cut-off events. For 519/519 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19989 event pairs, 750 based on Foata normal form. 72/2808 useless extension candidates. Maximal degree in co-relation 6948. Up to 2102 conditions per place. [2024-11-19 14:06:56,822 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 74 selfloop transitions, 2 changer transitions 1/105 dead transitions. [2024-11-19 14:06:56,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 557 flow [2024-11-19 14:06:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-11-19 14:06:56,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6413502109704642 [2024-11-19 14:06:56,824 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 363 flow. Second operand 3 states and 152 transitions. [2024-11-19 14:06:56,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 557 flow [2024-11-19 14:06:56,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 546 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:56,827 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 358 flow [2024-11-19 14:06:56,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-11-19 14:06:56,828 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-11-19 14:06:56,828 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 358 flow [2024-11-19 14:06:56,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:56,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:56,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:56,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:06:56,829 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:56,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:56,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2144902098, now seen corresponding path program 1 times [2024-11-19 14:06:56,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:56,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158469192] [2024-11-19 14:06:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:56,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:56,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:56,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158469192] [2024-11-19 14:06:56,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158469192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:56,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:56,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:56,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250840170] [2024-11-19 14:06:56,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:56,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:56,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:56,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-11-19 14:06:56,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:56,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:56,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-11-19 14:06:56,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:57,521 INFO L124 PetriNetUnfolderBase]: 4006/6941 cut-off events. [2024-11-19 14:06:57,521 INFO L125 PetriNetUnfolderBase]: For 1082/1085 co-relation queries the response was YES. [2024-11-19 14:06:57,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14207 conditions, 6941 events. 4006/6941 cut-off events. For 1082/1085 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 45693 event pairs, 2542 based on Foata normal form. 136/5905 useless extension candidates. Maximal degree in co-relation 14190. Up to 4305 conditions per place. [2024-11-19 14:06:57,570 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 102 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-11-19 14:06:57,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 131 transitions, 682 flow [2024-11-19 14:06:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-19 14:06:57,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329113924050633 [2024-11-19 14:06:57,572 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 358 flow. Second operand 4 states and 200 transitions. [2024-11-19 14:06:57,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 131 transitions, 682 flow [2024-11-19 14:06:57,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:57,576 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 385 flow [2024-11-19 14:06:57,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2024-11-19 14:06:57,577 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2024-11-19 14:06:57,577 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 385 flow [2024-11-19 14:06:57,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:57,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:57,581 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:57,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:06:57,581 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:57,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash 269952940, now seen corresponding path program 1 times [2024-11-19 14:06:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:57,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884491991] [2024-11-19 14:06:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:57,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:57,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:57,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884491991] [2024-11-19 14:06:57,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884491991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:57,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:57,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:57,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197425288] [2024-11-19 14:06:57,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:57,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:57,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:57,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-19 14:06:57,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:57,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:57,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-19 14:06:57,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:58,076 INFO L124 PetriNetUnfolderBase]: 2114/3830 cut-off events. [2024-11-19 14:06:58,076 INFO L125 PetriNetUnfolderBase]: For 1149/1476 co-relation queries the response was YES. [2024-11-19 14:06:58,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8507 conditions, 3830 events. 2114/3830 cut-off events. For 1149/1476 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23744 event pairs, 948 based on Foata normal form. 131/3336 useless extension candidates. Maximal degree in co-relation 8488. Up to 2794 conditions per place. [2024-11-19 14:06:58,110 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 69 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-11-19 14:06:58,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 101 transitions, 553 flow [2024-11-19 14:06:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-19 14:06:58,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6118143459915611 [2024-11-19 14:06:58,112 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 385 flow. Second operand 3 states and 145 transitions. [2024-11-19 14:06:58,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 101 transitions, 553 flow [2024-11-19 14:06:58,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:58,116 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 405 flow [2024-11-19 14:06:58,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2024-11-19 14:06:58,117 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 14 predicate places. [2024-11-19 14:06:58,117 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 405 flow [2024-11-19 14:06:58,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:58,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:58,118 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:06:58,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:06:58,118 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:58,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -54126506, now seen corresponding path program 2 times [2024-11-19 14:06:58,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:58,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958866964] [2024-11-19 14:06:58,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:58,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:58,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:58,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:58,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:58,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958866964] [2024-11-19 14:06:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958866964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121839810] [2024-11-19 14:06:58,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:06:58,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:58,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:58,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:58,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:06:58,225 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:06:58,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:06:58,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:06:58,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:58,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:06:58,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121839810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:58,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:58,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-19 14:06:58,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139934354] [2024-11-19 14:06:58,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:58,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:58,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-19 14:06:58,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:58,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:58,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-19 14:06:58,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:58,646 INFO L124 PetriNetUnfolderBase]: 2114/3761 cut-off events. [2024-11-19 14:06:58,646 INFO L125 PetriNetUnfolderBase]: For 1927/2321 co-relation queries the response was YES. [2024-11-19 14:06:58,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8660 conditions, 3761 events. 2114/3761 cut-off events. For 1927/2321 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 22942 event pairs, 1648 based on Foata normal form. 134/3272 useless extension candidates. Maximal degree in co-relation 8639. Up to 2981 conditions per place. [2024-11-19 14:06:58,669 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 37 selfloop transitions, 26 changer transitions 2/92 dead transitions. [2024-11-19 14:06:58,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 515 flow [2024-11-19 14:06:58,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2024-11-19 14:06:58,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48417721518987344 [2024-11-19 14:06:58,671 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 405 flow. Second operand 4 states and 153 transitions. [2024-11-19 14:06:58,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 515 flow [2024-11-19 14:06:58,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 485 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:58,675 INFO L231 Difference]: Finished difference. Result has 88 places, 90 transitions, 393 flow [2024-11-19 14:06:58,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=88, PETRI_TRANSITIONS=90} [2024-11-19 14:06:58,676 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2024-11-19 14:06:58,676 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 90 transitions, 393 flow [2024-11-19 14:06:58,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:58,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:58,677 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:58,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:06:58,880 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 [2024-11-19 14:06:58,881 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:58,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash 485629164, now seen corresponding path program 1 times [2024-11-19 14:06:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:58,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16915344] [2024-11-19 14:06:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:06:58,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:58,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16915344] [2024-11-19 14:06:58,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16915344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:58,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:58,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:58,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065452647] [2024-11-19 14:06:58,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:58,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:58,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:58,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:58,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:58,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-19 14:06:58,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 90 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:58,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:58,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-19 14:06:58,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:59,329 INFO L124 PetriNetUnfolderBase]: 2336/4124 cut-off events. [2024-11-19 14:06:59,330 INFO L125 PetriNetUnfolderBase]: For 1366/1804 co-relation queries the response was YES. [2024-11-19 14:06:59,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9142 conditions, 4124 events. 2336/4124 cut-off events. For 1366/1804 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 25264 event pairs, 1835 based on Foata normal form. 224/3720 useless extension candidates. Maximal degree in co-relation 9124. Up to 2896 conditions per place. [2024-11-19 14:06:59,360 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 69 selfloop transitions, 8 changer transitions 6/110 dead transitions. [2024-11-19 14:06:59,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 627 flow [2024-11-19 14:06:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:06:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:06:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-11-19 14:06:59,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.569620253164557 [2024-11-19 14:06:59,362 INFO L175 Difference]: Start difference. First operand has 88 places, 90 transitions, 393 flow. Second operand 5 states and 225 transitions. [2024-11-19 14:06:59,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 627 flow [2024-11-19 14:06:59,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 563 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-19 14:06:59,366 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 363 flow [2024-11-19 14:06:59,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2024-11-19 14:06:59,367 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-11-19 14:06:59,367 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 363 flow [2024-11-19 14:06:59,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:59,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:59,368 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:59,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 14:06:59,368 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:06:59,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:59,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1532008515, now seen corresponding path program 1 times [2024-11-19 14:06:59,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:59,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829184730] [2024-11-19 14:06:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:59,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:59,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829184730] [2024-11-19 14:06:59,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829184730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419068199] [2024-11-19 14:06:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:59,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:59,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:59,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:06:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:59,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 14:06:59,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:59,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:06:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:59,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419068199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:06:59,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:06:59,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-19 14:06:59,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197220382] [2024-11-19 14:06:59,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:06:59,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 14:06:59,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:59,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 14:06:59,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-19 14:06:59,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-19 14:06:59,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 363 flow. Second operand has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:59,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:59,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-19 14:06:59,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:00,560 INFO L124 PetriNetUnfolderBase]: 4011/7372 cut-off events. [2024-11-19 14:07:00,560 INFO L125 PetriNetUnfolderBase]: For 2383/2941 co-relation queries the response was YES. [2024-11-19 14:07:00,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16656 conditions, 7372 events. 4011/7372 cut-off events. For 2383/2941 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 52282 event pairs, 2633 based on Foata normal form. 580/6798 useless extension candidates. Maximal degree in co-relation 16639. Up to 3342 conditions per place. [2024-11-19 14:07:00,595 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 82 selfloop transitions, 32 changer transitions 1/142 dead transitions. [2024-11-19 14:07:00,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 142 transitions, 791 flow [2024-11-19 14:07:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 14:07:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 14:07:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 344 transitions. [2024-11-19 14:07:00,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4838255977496484 [2024-11-19 14:07:00,597 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 363 flow. Second operand 9 states and 344 transitions. [2024-11-19 14:07:00,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 142 transitions, 791 flow [2024-11-19 14:07:00,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:00,601 INFO L231 Difference]: Finished difference. Result has 96 places, 102 transitions, 542 flow [2024-11-19 14:07:00,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=542, PETRI_PLACES=96, PETRI_TRANSITIONS=102} [2024-11-19 14:07:00,602 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2024-11-19 14:07:00,602 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 102 transitions, 542 flow [2024-11-19 14:07:00,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.6) internal successors, (459), 15 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:00,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:00,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:00,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:00,806 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,SelfDestructingSolverStorable10 [2024-11-19 14:07:00,807 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:00,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:00,807 INFO L85 PathProgramCache]: Analyzing trace with hash 973320855, now seen corresponding path program 1 times [2024-11-19 14:07:00,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:00,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953891557] [2024-11-19 14:07:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:00,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:01,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:01,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953891557] [2024-11-19 14:07:01,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953891557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:01,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015430493] [2024-11-19 14:07:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:01,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:01,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:01,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:01,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:07:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:01,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:07:01,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:01,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:07:01,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:07:01,525 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:07:01,526 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 11 treesize of output 11 [2024-11-19 14:07:01,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 14:07:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:01,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:02,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:02,132 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-11-19 14:07:02,144 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:07:02,145 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 66 treesize of output 53 [2024-11-19 14:07:02,155 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 14:07:02,155 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 40 treesize of output 28 [2024-11-19 14:07:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:02,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015430493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:02,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:02,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-11-19 14:07:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337200504] [2024-11-19 14:07:02,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:02,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 14:07:02,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 14:07:02,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=372, Unknown=2, NotChecked=0, Total=462 [2024-11-19 14:07:02,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-11-19 14:07:02,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 102 transitions, 542 flow. Second operand has 22 states, 22 states have (on average 24.454545454545453) internal successors, (538), 22 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:02,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:02,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-11-19 14:07:02,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:06,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 14:07:08,605 INFO L124 PetriNetUnfolderBase]: 5426/9207 cut-off events. [2024-11-19 14:07:08,605 INFO L125 PetriNetUnfolderBase]: For 3830/4622 co-relation queries the response was YES. [2024-11-19 14:07:08,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21857 conditions, 9207 events. 5426/9207 cut-off events. For 3830/4622 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 62812 event pairs, 1452 based on Foata normal form. 386/8087 useless extension candidates. Maximal degree in co-relation 21836. Up to 2605 conditions per place. [2024-11-19 14:07:08,661 INFO L140 encePairwiseOnDemand]: 64/79 looper letters, 207 selfloop transitions, 57 changer transitions 2/286 dead transitions. [2024-11-19 14:07:08,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 286 transitions, 1676 flow [2024-11-19 14:07:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 14:07:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 14:07:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 748 transitions. [2024-11-19 14:07:08,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4116675839295542 [2024-11-19 14:07:08,665 INFO L175 Difference]: Start difference. First operand has 96 places, 102 transitions, 542 flow. Second operand 23 states and 748 transitions. [2024-11-19 14:07:08,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 286 transitions, 1676 flow [2024-11-19 14:07:08,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 286 transitions, 1674 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:08,674 INFO L231 Difference]: Finished difference. Result has 126 places, 131 transitions, 911 flow [2024-11-19 14:07:08,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=911, PETRI_PLACES=126, PETRI_TRANSITIONS=131} [2024-11-19 14:07:08,675 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 48 predicate places. [2024-11-19 14:07:08,675 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 131 transitions, 911 flow [2024-11-19 14:07:08,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.454545454545453) internal successors, (538), 22 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:08,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:08,675 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:08,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:07:08,876 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 [2024-11-19 14:07:08,876 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:08,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:08,877 INFO L85 PathProgramCache]: Analyzing trace with hash 973090218, now seen corresponding path program 1 times [2024-11-19 14:07:08,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:08,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829726574] [2024-11-19 14:07:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:08,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:09,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:09,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829726574] [2024-11-19 14:07:09,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829726574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:09,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171920788] [2024-11-19 14:07:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:09,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:09,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:09,062 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:09,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:07:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:09,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:07:09,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:07:09,196 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:07:09,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171920788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:09,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:07:09,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-19 14:07:09,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598949096] [2024-11-19 14:07:09,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:09,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:07:09,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:09,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:07:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:07:09,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-19 14:07:09,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 131 transitions, 911 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:09,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:09,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-19 14:07:09,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:09,748 INFO L124 PetriNetUnfolderBase]: 2923/5469 cut-off events. [2024-11-19 14:07:09,748 INFO L125 PetriNetUnfolderBase]: For 7096/7529 co-relation queries the response was YES. [2024-11-19 14:07:09,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14437 conditions, 5469 events. 2923/5469 cut-off events. For 7096/7529 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 37617 event pairs, 2370 based on Foata normal form. 404/5513 useless extension candidates. Maximal degree in co-relation 14406. Up to 4326 conditions per place. [2024-11-19 14:07:09,779 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 98 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2024-11-19 14:07:09,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 127 transitions, 1081 flow [2024-11-19 14:07:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:07:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:07:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-19 14:07:09,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5654008438818565 [2024-11-19 14:07:09,781 INFO L175 Difference]: Start difference. First operand has 126 places, 131 transitions, 911 flow. Second operand 3 states and 134 transitions. [2024-11-19 14:07:09,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 127 transitions, 1081 flow [2024-11-19 14:07:09,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 127 transitions, 1041 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:09,803 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 845 flow [2024-11-19 14:07:09,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=845, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2024-11-19 14:07:09,804 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 43 predicate places. [2024-11-19 14:07:09,804 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 845 flow [2024-11-19 14:07:09,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:09,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:09,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:09,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:07:10,004 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 [2024-11-19 14:07:10,005 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:10,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:10,006 INFO L85 PathProgramCache]: Analyzing trace with hash -333078128, now seen corresponding path program 1 times [2024-11-19 14:07:10,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:10,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499336871] [2024-11-19 14:07:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:10,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:10,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:10,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499336871] [2024-11-19 14:07:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499336871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:10,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796670065] [2024-11-19 14:07:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:10,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:10,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:10,349 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:10,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:07:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:10,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:07:10,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:10,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:07:10,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:07:10,575 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:07:10,576 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 11 treesize of output 11 [2024-11-19 14:07:10,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 14:07:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:10,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:11,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:11,364 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-19 14:07:11,393 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:07:11,393 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 62 treesize of output 49 [2024-11-19 14:07:11,405 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 14:07:11,405 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 38 treesize of output 26 [2024-11-19 14:07:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:11,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796670065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:11,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:11,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-11-19 14:07:11,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116480875] [2024-11-19 14:07:11,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:11,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 14:07:11,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:11,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 14:07:11,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=370, Unknown=1, NotChecked=0, Total=462 [2024-11-19 14:07:11,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-11-19 14:07:11,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 845 flow. Second operand has 22 states, 22 states have (on average 24.318181818181817) internal successors, (535), 22 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:11,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:11,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-11-19 14:07:11,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:16,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 14:07:17,733 INFO L124 PetriNetUnfolderBase]: 5144/8776 cut-off events. [2024-11-19 14:07:17,734 INFO L125 PetriNetUnfolderBase]: For 7527/8293 co-relation queries the response was YES. [2024-11-19 14:07:17,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22683 conditions, 8776 events. 5144/8776 cut-off events. For 7527/8293 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 59979 event pairs, 1328 based on Foata normal form. 517/8601 useless extension candidates. Maximal degree in co-relation 22653. Up to 1804 conditions per place. [2024-11-19 14:07:17,780 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 199 selfloop transitions, 54 changer transitions 1/274 dead transitions. [2024-11-19 14:07:17,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 274 transitions, 1798 flow [2024-11-19 14:07:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 14:07:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 14:07:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 708 transitions. [2024-11-19 14:07:17,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40736478711162255 [2024-11-19 14:07:17,783 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 845 flow. Second operand 22 states and 708 transitions. [2024-11-19 14:07:17,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 274 transitions, 1798 flow [2024-11-19 14:07:17,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 274 transitions, 1797 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:17,812 INFO L231 Difference]: Finished difference. Result has 145 places, 132 transitions, 1032 flow [2024-11-19 14:07:17,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1032, PETRI_PLACES=145, PETRI_TRANSITIONS=132} [2024-11-19 14:07:17,814 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 67 predicate places. [2024-11-19 14:07:17,814 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 132 transitions, 1032 flow [2024-11-19 14:07:17,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.318181818181817) internal successors, (535), 22 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:17,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:17,815 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:17,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:07:18,019 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 [2024-11-19 14:07:18,020 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:18,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:18,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1963773983, now seen corresponding path program 2 times [2024-11-19 14:07:18,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:18,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974100330] [2024-11-19 14:07:18,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:18,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:18,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:07:18,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:07:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974100330] [2024-11-19 14:07:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974100330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982213795] [2024-11-19 14:07:18,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:07:18,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:18,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:18,105 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:18,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:07:18,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:07:18,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:07:18,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:07:18,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:07:18,222 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:07:18,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982213795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:18,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:07:18,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 14:07:18,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16600758] [2024-11-19 14:07:18,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:18,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:18,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:18,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:18,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:07:18,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-19 14:07:18,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 132 transitions, 1032 flow. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:18,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:18,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-19 14:07:18,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:18,992 INFO L124 PetriNetUnfolderBase]: 5555/9772 cut-off events. [2024-11-19 14:07:18,992 INFO L125 PetriNetUnfolderBase]: For 16858/16860 co-relation queries the response was YES. [2024-11-19 14:07:19,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28785 conditions, 9772 events. 5555/9772 cut-off events. For 16858/16860 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 68304 event pairs, 1889 based on Foata normal form. 164/9390 useless extension candidates. Maximal degree in co-relation 28750. Up to 3142 conditions per place. [2024-11-19 14:07:19,059 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 154 selfloop transitions, 7 changer transitions 0/185 dead transitions. [2024-11-19 14:07:19,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 185 transitions, 1710 flow [2024-11-19 14:07:19,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2024-11-19 14:07:19,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5854430379746836 [2024-11-19 14:07:19,061 INFO L175 Difference]: Start difference. First operand has 145 places, 132 transitions, 1032 flow. Second operand 4 states and 185 transitions. [2024-11-19 14:07:19,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 185 transitions, 1710 flow [2024-11-19 14:07:19,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 185 transitions, 1606 flow, removed 18 selfloop flow, removed 14 redundant places. [2024-11-19 14:07:19,131 INFO L231 Difference]: Finished difference. Result has 133 places, 131 transitions, 964 flow [2024-11-19 14:07:19,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=964, PETRI_PLACES=133, PETRI_TRANSITIONS=131} [2024-11-19 14:07:19,132 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 55 predicate places. [2024-11-19 14:07:19,132 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 131 transitions, 964 flow [2024-11-19 14:07:19,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:19,133 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] [2024-11-19 14:07:19,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 14:07:19,333 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 [2024-11-19 14:07:19,334 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:19,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:19,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1140673482, now seen corresponding path program 1 times [2024-11-19 14:07:19,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:19,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168166061] [2024-11-19 14:07:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:19,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:07:19,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:19,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168166061] [2024-11-19 14:07:19,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168166061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:19,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:19,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:07:19,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100043905] [2024-11-19 14:07:19,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:19,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:19,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:19,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-11-19 14:07:19,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 131 transitions, 964 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:19,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:19,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-11-19 14:07:19,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:20,030 INFO L124 PetriNetUnfolderBase]: 4612/7836 cut-off events. [2024-11-19 14:07:20,030 INFO L125 PetriNetUnfolderBase]: For 11265/11844 co-relation queries the response was YES. [2024-11-19 14:07:20,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23126 conditions, 7836 events. 4612/7836 cut-off events. For 11265/11844 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 53000 event pairs, 1350 based on Foata normal form. 515/7953 useless extension candidates. Maximal degree in co-relation 23091. Up to 3576 conditions per place. [2024-11-19 14:07:20,085 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 128 selfloop transitions, 8 changer transitions 0/160 dead transitions. [2024-11-19 14:07:20,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 160 transitions, 1354 flow [2024-11-19 14:07:20,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:20,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-19 14:07:20,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5886075949367089 [2024-11-19 14:07:20,086 INFO L175 Difference]: Start difference. First operand has 133 places, 131 transitions, 964 flow. Second operand 4 states and 186 transitions. [2024-11-19 14:07:20,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 160 transitions, 1354 flow [2024-11-19 14:07:20,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 160 transitions, 1328 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:07:20,106 INFO L231 Difference]: Finished difference. Result has 135 places, 133 transitions, 997 flow [2024-11-19 14:07:20,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=997, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2024-11-19 14:07:20,107 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 57 predicate places. [2024-11-19 14:07:20,107 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 997 flow [2024-11-19 14:07:20,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:20,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:20,108 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:20,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 14:07:20,108 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:20,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash -747450461, now seen corresponding path program 1 times [2024-11-19 14:07:20,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:20,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034486238] [2024-11-19 14:07:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:20,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:07:20,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:20,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034486238] [2024-11-19 14:07:20,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034486238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:20,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755356424] [2024-11-19 14:07:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:20,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:20,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:20,188 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:20,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:07:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:20,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:20,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:07:20,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 14:07:20,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755356424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:20,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:20,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:07:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098851218] [2024-11-19 14:07:20,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:20,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:07:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:07:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:07:20,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-11-19 14:07:20,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 133 transitions, 997 flow. Second operand has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:20,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:20,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-11-19 14:07:20,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:22,229 INFO L124 PetriNetUnfolderBase]: 8621/15442 cut-off events. [2024-11-19 14:07:22,229 INFO L125 PetriNetUnfolderBase]: For 28793/28939 co-relation queries the response was YES. [2024-11-19 14:07:22,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45749 conditions, 15442 events. 8621/15442 cut-off events. For 28793/28939 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 113999 event pairs, 2647 based on Foata normal form. 0/15066 useless extension candidates. Maximal degree in co-relation 45711. Up to 5799 conditions per place. [2024-11-19 14:07:22,323 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 309 selfloop transitions, 13 changer transitions 0/347 dead transitions. [2024-11-19 14:07:22,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 347 transitions, 3048 flow [2024-11-19 14:07:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:07:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:07:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 482 transitions. [2024-11-19 14:07:22,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.610126582278481 [2024-11-19 14:07:22,325 INFO L175 Difference]: Start difference. First operand has 135 places, 133 transitions, 997 flow. Second operand 10 states and 482 transitions. [2024-11-19 14:07:22,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 347 transitions, 3048 flow [2024-11-19 14:07:22,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 347 transitions, 3014 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:22,394 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 1070 flow [2024-11-19 14:07:22,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1070, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-11-19 14:07:22,395 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 67 predicate places. [2024-11-19 14:07:22,395 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 1070 flow [2024-11-19 14:07:22,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.0) internal successors, (384), 12 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:22,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:22,396 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] [2024-11-19 14:07:22,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 14:07:22,600 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,SelfDestructingSolverStorable16 [2024-11-19 14:07:22,601 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:22,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:22,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1001140458, now seen corresponding path program 1 times [2024-11-19 14:07:22,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:22,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273699906] [2024-11-19 14:07:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:22,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:23,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273699906] [2024-11-19 14:07:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273699906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425546724] [2024-11-19 14:07:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:23,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:23,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:23,220 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:23,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:07:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:23,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 14:07:23,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:23,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-19 14:07:23,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:07:23,465 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:07:23,465 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 11 treesize of output 11 [2024-11-19 14:07:23,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 14:07:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:23,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:24,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:24,062 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-11-19 14:07:24,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:24,076 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 66 treesize of output 58 [2024-11-19 14:07:24,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:24,089 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 40 treesize of output 36 [2024-11-19 14:07:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:24,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425546724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:24,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:24,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-11-19 14:07:24,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091062009] [2024-11-19 14:07:24,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:24,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 14:07:24,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:24,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 14:07:24,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=372, Unknown=2, NotChecked=0, Total=462 [2024-11-19 14:07:24,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-11-19 14:07:24,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 1070 flow. Second operand has 22 states, 22 states have (on average 24.727272727272727) internal successors, (544), 22 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:24,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:24,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-11-19 14:07:24,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:28,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 14:07:31,653 INFO L124 PetriNetUnfolderBase]: 9662/15564 cut-off events. [2024-11-19 14:07:31,653 INFO L125 PetriNetUnfolderBase]: For 27406/28089 co-relation queries the response was YES. [2024-11-19 14:07:31,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48461 conditions, 15564 events. 9662/15564 cut-off events. For 27406/28089 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 106535 event pairs, 5717 based on Foata normal form. 95/15117 useless extension candidates. Maximal degree in co-relation 48421. Up to 10538 conditions per place. [2024-11-19 14:07:31,751 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 217 selfloop transitions, 49 changer transitions 1/289 dead transitions. [2024-11-19 14:07:31,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 289 transitions, 2081 flow [2024-11-19 14:07:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 14:07:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 14:07:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 708 transitions. [2024-11-19 14:07:31,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40736478711162255 [2024-11-19 14:07:31,754 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 1070 flow. Second operand 22 states and 708 transitions. [2024-11-19 14:07:31,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 289 transitions, 2081 flow [2024-11-19 14:07:31,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 289 transitions, 2009 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-11-19 14:07:31,794 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1166 flow [2024-11-19 14:07:31,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1166, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-11-19 14:07:31,795 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 88 predicate places. [2024-11-19 14:07:31,795 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1166 flow [2024-11-19 14:07:31,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.727272727272727) internal successors, (544), 22 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:31,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:31,795 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:31,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:31,996 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,SelfDestructingSolverStorable17 [2024-11-19 14:07:31,996 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:31,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:31,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1764954553, now seen corresponding path program 1 times [2024-11-19 14:07:31,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:31,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861491758] [2024-11-19 14:07:31,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:31,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:32,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:32,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861491758] [2024-11-19 14:07:32,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861491758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:32,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173398984] [2024-11-19 14:07:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:32,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:32,570 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:32,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:07:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:32,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 14:07:32,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:07:32,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:32,916 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:07:32,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2024-11-19 14:07:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:07:32,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173398984] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:32,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 14:07:32,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 15 [2024-11-19 14:07:32,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567156019] [2024-11-19 14:07:32,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:32,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:32,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:32,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:32,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-19 14:07:32,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-11-19 14:07:32,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1166 flow. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:32,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:32,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-11-19 14:07:32,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:34,363 INFO L124 PetriNetUnfolderBase]: 6629/12245 cut-off events. [2024-11-19 14:07:34,363 INFO L125 PetriNetUnfolderBase]: For 18849/19301 co-relation queries the response was YES. [2024-11-19 14:07:34,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37434 conditions, 12245 events. 6629/12245 cut-off events. For 18849/19301 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 91731 event pairs, 754 based on Foata normal form. 149/12059 useless extension candidates. Maximal degree in co-relation 37390. Up to 5660 conditions per place. [2024-11-19 14:07:34,437 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 139 selfloop transitions, 19 changer transitions 0/188 dead transitions. [2024-11-19 14:07:34,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 188 transitions, 1633 flow [2024-11-19 14:07:34,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:34,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 231 transitions. [2024-11-19 14:07:34,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5848101265822785 [2024-11-19 14:07:34,439 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1166 flow. Second operand 5 states and 231 transitions. [2024-11-19 14:07:34,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 188 transitions, 1633 flow [2024-11-19 14:07:34,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 188 transitions, 1569 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-11-19 14:07:34,511 INFO L231 Difference]: Finished difference. Result has 157 places, 144 transitions, 1144 flow [2024-11-19 14:07:34,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1144, PETRI_PLACES=157, PETRI_TRANSITIONS=144} [2024-11-19 14:07:34,512 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 79 predicate places. [2024-11-19 14:07:34,512 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 144 transitions, 1144 flow [2024-11-19 14:07:34,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:34,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:34,512 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:34,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:34,712 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 [2024-11-19 14:07:34,713 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:34,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:34,713 INFO L85 PathProgramCache]: Analyzing trace with hash -182275818, now seen corresponding path program 1 times [2024-11-19 14:07:34,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:34,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775809282] [2024-11-19 14:07:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:35,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:35,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775809282] [2024-11-19 14:07:35,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775809282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:35,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58338500] [2024-11-19 14:07:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:35,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:35,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:35,252 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:35,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 14:07:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:35,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 14:07:35,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:07:35,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:35,500 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:07:35,501 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 24 treesize of output 11 [2024-11-19 14:07:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:07:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58338500] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:35,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 14:07:35,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 15 [2024-11-19 14:07:35,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682578392] [2024-11-19 14:07:35,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:35,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:35,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:35,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-19 14:07:35,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-11-19 14:07:35,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 144 transitions, 1144 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:35,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:35,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-11-19 14:07:35,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:36,910 INFO L124 PetriNetUnfolderBase]: 6444/11745 cut-off events. [2024-11-19 14:07:36,910 INFO L125 PetriNetUnfolderBase]: For 21622/22143 co-relation queries the response was YES. [2024-11-19 14:07:36,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36838 conditions, 11745 events. 6444/11745 cut-off events. For 21622/22143 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 85921 event pairs, 769 based on Foata normal form. 89/11439 useless extension candidates. Maximal degree in co-relation 36792. Up to 5466 conditions per place. [2024-11-19 14:07:36,975 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 136 selfloop transitions, 20 changer transitions 0/186 dead transitions. [2024-11-19 14:07:36,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 186 transitions, 1592 flow [2024-11-19 14:07:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:36,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-11-19 14:07:36,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822784810126582 [2024-11-19 14:07:36,976 INFO L175 Difference]: Start difference. First operand has 157 places, 144 transitions, 1144 flow. Second operand 5 states and 230 transitions. [2024-11-19 14:07:36,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 186 transitions, 1592 flow [2024-11-19 14:07:37,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 186 transitions, 1562 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-19 14:07:37,036 INFO L231 Difference]: Finished difference. Result has 158 places, 142 transitions, 1130 flow [2024-11-19 14:07:37,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1130, PETRI_PLACES=158, PETRI_TRANSITIONS=142} [2024-11-19 14:07:37,036 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 80 predicate places. [2024-11-19 14:07:37,036 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 142 transitions, 1130 flow [2024-11-19 14:07:37,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:37,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:37,037 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] [2024-11-19 14:07:37,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 14:07:37,237 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 [2024-11-19 14:07:37,238 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:37,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:37,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1060886222, now seen corresponding path program 1 times [2024-11-19 14:07:37,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:37,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237279702] [2024-11-19 14:07:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:37,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:38,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:38,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237279702] [2024-11-19 14:07:38,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237279702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:38,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547787987] [2024-11-19 14:07:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:38,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:38,019 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:38,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 14:07:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:38,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 14:07:38,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:38,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:07:38,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:38,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:07:38,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-19 14:07:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:07:38,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547787987] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:38,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 14:07:38,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 5] total 18 [2024-11-19 14:07:38,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474050557] [2024-11-19 14:07:38,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:38,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:07:38,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:38,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:07:38,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-19 14:07:38,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 79 [2024-11-19 14:07:38,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 142 transitions, 1130 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:38,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:38,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 79 [2024-11-19 14:07:38,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:39,733 INFO L124 PetriNetUnfolderBase]: 7236/12628 cut-off events. [2024-11-19 14:07:39,733 INFO L125 PetriNetUnfolderBase]: For 24633/24983 co-relation queries the response was YES. [2024-11-19 14:07:39,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39914 conditions, 12628 events. 7236/12628 cut-off events. For 24633/24983 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 89676 event pairs, 328 based on Foata normal form. 150/12623 useless extension candidates. Maximal degree in co-relation 39868. Up to 5459 conditions per place. [2024-11-19 14:07:39,834 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 141 selfloop transitions, 18 changer transitions 0/186 dead transitions. [2024-11-19 14:07:39,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 186 transitions, 1608 flow [2024-11-19 14:07:39,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-11-19 14:07:39,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5645569620253165 [2024-11-19 14:07:39,836 INFO L175 Difference]: Start difference. First operand has 158 places, 142 transitions, 1130 flow. Second operand 5 states and 223 transitions. [2024-11-19 14:07:39,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 186 transitions, 1608 flow [2024-11-19 14:07:39,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 186 transitions, 1557 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-19 14:07:39,922 INFO L231 Difference]: Finished difference. Result has 156 places, 142 transitions, 1127 flow [2024-11-19 14:07:39,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1127, PETRI_PLACES=156, PETRI_TRANSITIONS=142} [2024-11-19 14:07:39,923 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 78 predicate places. [2024-11-19 14:07:39,923 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 142 transitions, 1127 flow [2024-11-19 14:07:39,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:39,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:39,923 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, 1, 1, 1] [2024-11-19 14:07:39,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:40,124 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 [2024-11-19 14:07:40,124 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:40,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:40,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1830325998, now seen corresponding path program 1 times [2024-11-19 14:07:40,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:40,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811122974] [2024-11-19 14:07:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:40,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:40,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:40,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811122974] [2024-11-19 14:07:40,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811122974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:40,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953257358] [2024-11-19 14:07:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:40,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:40,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:40,583 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:40,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 14:07:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:40,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 14:07:40,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:40,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:07:41,287 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:07:41,287 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 [2024-11-19 14:07:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:41,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:41,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-19 14:07:41,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-19 14:07:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:41,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953257358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:41,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:41,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-19 14:07:41,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146261040] [2024-11-19 14:07:41,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:41,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 14:07:41,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 14:07:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-19 14:07:42,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-19 14:07:42,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 142 transitions, 1127 flow. Second operand has 23 states, 23 states have (on average 23.73913043478261) internal successors, (546), 23 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:42,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:42,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-19 14:07:42,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:47,684 INFO L124 PetriNetUnfolderBase]: 18853/30802 cut-off events. [2024-11-19 14:07:47,685 INFO L125 PetriNetUnfolderBase]: For 77816/79437 co-relation queries the response was YES. [2024-11-19 14:07:47,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102024 conditions, 30802 events. 18853/30802 cut-off events. For 77816/79437 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 237491 event pairs, 3406 based on Foata normal form. 56/29651 useless extension candidates. Maximal degree in co-relation 101980. Up to 3790 conditions per place. [2024-11-19 14:07:48,024 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 412 selfloop transitions, 75 changer transitions 9/520 dead transitions. [2024-11-19 14:07:48,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 520 transitions, 4252 flow [2024-11-19 14:07:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 14:07:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 14:07:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 827 transitions. [2024-11-19 14:07:48,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4026290165530672 [2024-11-19 14:07:48,026 INFO L175 Difference]: Start difference. First operand has 156 places, 142 transitions, 1127 flow. Second operand 26 states and 827 transitions. [2024-11-19 14:07:48,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 520 transitions, 4252 flow [2024-11-19 14:07:48,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 520 transitions, 4166 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 14:07:48,362 INFO L231 Difference]: Finished difference. Result has 185 places, 167 transitions, 1515 flow [2024-11-19 14:07:48,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1515, PETRI_PLACES=185, PETRI_TRANSITIONS=167} [2024-11-19 14:07:48,363 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 107 predicate places. [2024-11-19 14:07:48,363 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 167 transitions, 1515 flow [2024-11-19 14:07:48,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 23.73913043478261) internal successors, (546), 23 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:48,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:48,363 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:48,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 14:07:48,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:48,564 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:48,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1932498907, now seen corresponding path program 1 times [2024-11-19 14:07:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:48,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117619990] [2024-11-19 14:07:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:48,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:48,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:48,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117619990] [2024-11-19 14:07:48,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117619990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:48,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643635339] [2024-11-19 14:07:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:48,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:48,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:48,703 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:48,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 14:07:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:48,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:07:48,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:07:48,856 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:07:48,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643635339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:48,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:07:48,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:07:48,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364832508] [2024-11-19 14:07:48,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:48,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:07:48,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-19 14:07:48,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 167 transitions, 1515 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:48,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:48,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-19 14:07:48,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:53,721 INFO L124 PetriNetUnfolderBase]: 20605/39122 cut-off events. [2024-11-19 14:07:53,722 INFO L125 PetriNetUnfolderBase]: For 124600/125834 co-relation queries the response was YES. [2024-11-19 14:07:53,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132137 conditions, 39122 events. 20605/39122 cut-off events. For 124600/125834 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 344498 event pairs, 4641 based on Foata normal form. 429/39059 useless extension candidates. Maximal degree in co-relation 132085. Up to 12864 conditions per place. [2024-11-19 14:07:54,129 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 208 selfloop transitions, 18 changer transitions 0/258 dead transitions. [2024-11-19 14:07:54,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 258 transitions, 2632 flow [2024-11-19 14:07:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:54,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2024-11-19 14:07:54,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6740506329113924 [2024-11-19 14:07:54,131 INFO L175 Difference]: Start difference. First operand has 185 places, 167 transitions, 1515 flow. Second operand 4 states and 213 transitions. [2024-11-19 14:07:54,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 258 transitions, 2632 flow [2024-11-19 14:07:54,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 258 transitions, 2474 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-11-19 14:07:54,539 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 1442 flow [2024-11-19 14:07:54,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1442, PETRI_PLACES=177, PETRI_TRANSITIONS=164} [2024-11-19 14:07:54,539 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 99 predicate places. [2024-11-19 14:07:54,539 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 1442 flow [2024-11-19 14:07:54,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:54,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:54,540 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, 1, 1, 1, 1] [2024-11-19 14:07:54,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 14:07:54,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 14:07:54,741 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:07:54,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:54,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2092361729, now seen corresponding path program 1 times [2024-11-19 14:07:54,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:54,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633542] [2024-11-19 14:07:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:54,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:55,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:55,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633542] [2024-11-19 14:07:55,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:55,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269094211] [2024-11-19 14:07:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:55,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:55,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:55,187 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:55,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 14:07:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:55,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:07:55,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:55,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 14:07:55,858 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:07:55,859 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 [2024-11-19 14:07:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:55,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:56,122 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 [2024-11-19 14:07:56,125 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 [2024-11-19 14:07:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:07:56,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269094211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:56,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:56,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-19 14:07:56,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714201045] [2024-11-19 14:07:56,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:56,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 14:07:56,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:56,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 14:07:56,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-19 14:07:56,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-11-19 14:07:56,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 164 transitions, 1442 flow. Second operand has 23 states, 23 states have (on average 24.73913043478261) internal successors, (569), 23 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:56,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:56,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-11-19 14:07:56,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:08:03,292 INFO L124 PetriNetUnfolderBase]: 24266/42468 cut-off events. [2024-11-19 14:08:03,292 INFO L125 PetriNetUnfolderBase]: For 159927/162216 co-relation queries the response was YES. [2024-11-19 14:08:03,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154977 conditions, 42468 events. 24266/42468 cut-off events. For 159927/162216 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 352423 event pairs, 5066 based on Foata normal form. 1157/43203 useless extension candidates. Maximal degree in co-relation 154925. Up to 6883 conditions per place. [2024-11-19 14:08:03,838 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 340 selfloop transitions, 65 changer transitions 11/441 dead transitions. [2024-11-19 14:08:03,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 441 transitions, 4167 flow [2024-11-19 14:08:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 14:08:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 14:08:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 664 transitions. [2024-11-19 14:08:03,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4002411091018686 [2024-11-19 14:08:03,840 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 1442 flow. Second operand 21 states and 664 transitions. [2024-11-19 14:08:03,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 441 transitions, 4167 flow [2024-11-19 14:08:04,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 441 transitions, 4063 flow, removed 52 selfloop flow, removed 0 redundant places. [2024-11-19 14:08:04,442 INFO L231 Difference]: Finished difference. Result has 198 places, 164 transitions, 1567 flow [2024-11-19 14:08:04,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1567, PETRI_PLACES=198, PETRI_TRANSITIONS=164} [2024-11-19 14:08:04,443 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 120 predicate places. [2024-11-19 14:08:04,443 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 164 transitions, 1567 flow [2024-11-19 14:08:04,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 24.73913043478261) internal successors, (569), 23 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:04,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:08:04,443 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:08:04,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 14:08:04,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:04,644 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2024-11-19 14:08:04,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:08:04,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1180022291, now seen corresponding path program 1 times [2024-11-19 14:08:04,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:08:04,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875317730] [2024-11-19 14:08:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:04,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:08:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:08:04,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:08:04,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875317730] [2024-11-19 14:08:04,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875317730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:08:04,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135117250] [2024-11-19 14:08:04,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:08:04,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:08:04,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:08:04,770 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:08:04,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 14:08:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:08:04,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:08:04,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:08:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:08:04,930 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:08:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135117250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:08:04,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:08:04,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-19 14:08:04,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896141939] [2024-11-19 14:08:04,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:08:04,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:08:04,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:08:04,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:08:04,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:08:04,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-19 14:08:04,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 164 transitions, 1567 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:08:04,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:08:04,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-19 14:08:04,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand