./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4a4a131c0d4df2db1bf018027395318bc112945cbb20d5c862562c48934e5a1 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:12:52,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:12:52,094 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:12:52,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:12:52,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:12:52,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:12:52,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:12:52,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:12:52,127 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:12:52,128 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:12:52,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:12:52,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:12:52,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:12:52,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:12:52,129 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:12:52,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:12:52,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:12:52,130 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:12:52,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:12:52,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:12:52,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:12:52,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:12:52,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:12:52,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:12:52,132 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:12:52,132 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:12:52,132 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:12:52,132 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:12:52,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:12:52,133 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:12:52,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:12:52,133 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:12:52,133 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:12:52,134 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:12:52,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:12:52,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:12:52,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:12:52,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:12:52,135 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:12:52,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:12:52,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:12:52,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:12:52,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:12:52,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:12:52,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4a4a131c0d4df2db1bf018027395318bc112945cbb20d5c862562c48934e5a1 [2024-11-09 15:12:52,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:12:52,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:12:52,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:12:52,388 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:12:52,388 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:12:52,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-11-09 15:12:53,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:12:53,893 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:12:53,894 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-11-09 15:12:53,900 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdac05b91/ba8221589ddb4949b94053402f86fdc1/FLAG99bc3dfc6 [2024-11-09 15:12:53,912 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdac05b91/ba8221589ddb4949b94053402f86fdc1 [2024-11-09 15:12:53,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:12:53,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:12:53,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:12:53,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:12:53,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:12:53,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:12:53" (1/1) ... [2024-11-09 15:12:53,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ffea3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:53, skipping insertion in model container [2024-11-09 15:12:53,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:12:53" (1/1) ... [2024-11-09 15:12:53,946 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:12:54,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:12:54,139 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:12:54,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:12:54,173 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:12:54,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54 WrapperNode [2024-11-09 15:12:54,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:12:54,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:12:54,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:12:54,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:12:54,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,228 INFO L138 Inliner]: procedures = 22, calls = 32, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 360 [2024-11-09 15:12:54,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:12:54,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:12:54,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:12:54,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:12:54,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,267 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-09 15:12:54,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:12:54,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:12:54,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:12:54,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:12:54,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (1/1) ... [2024-11-09 15:12:54,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:12:54,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:54,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:12:54,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:12:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:12:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:12:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:12:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:12:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:12:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:12:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:12:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:12:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:12:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:12:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:12:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:12:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:12:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:12:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:12:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:12:54,383 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:12:54,478 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:12:54,481 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:12:55,012 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:12:55,012 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:12:55,292 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:12:55,293 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-09 15:12:55,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:12:55 BoogieIcfgContainer [2024-11-09 15:12:55,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:12:55,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:12:55,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:12:55,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:12:55,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:12:53" (1/3) ... [2024-11-09 15:12:55,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f1012c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:12:55, skipping insertion in model container [2024-11-09 15:12:55,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:54" (2/3) ... [2024-11-09 15:12:55,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f1012c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:12:55, skipping insertion in model container [2024-11-09 15:12:55,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:12:55" (3/3) ... [2024-11-09 15:12:55,302 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2024-11-09 15:12:55,318 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:12:55,319 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-11-09 15:12:55,319 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:12:55,400 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:12:55,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 339 flow [2024-11-09 15:12:55,485 INFO L124 PetriNetUnfolderBase]: 17/156 cut-off events. [2024-11-09 15:12:55,485 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:12:55,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 17/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 620 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2024-11-09 15:12:55,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 159 transitions, 339 flow [2024-11-09 15:12:55,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 154 transitions, 323 flow [2024-11-09 15:12:55,504 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:12:55,509 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;@77ac6377, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:12:55,509 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-11-09 15:12:55,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:12:55,511 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:12:55,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:12:55,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:55,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:12:55,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-09 15:12:55,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:55,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1112629, now seen corresponding path program 1 times [2024-11-09 15:12:55,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:55,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80425640] [2024-11-09 15:12:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:55,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:55,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80425640] [2024-11-09 15:12:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80425640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:55,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:12:55,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:12:55,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902593346] [2024-11-09 15:12:55,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:55,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:12:55,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:55,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:12:56,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:12:56,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 159 [2024-11-09 15:12:56,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 154 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:56,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:56,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 159 [2024-11-09 15:12:56,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:12:58,914 INFO L124 PetriNetUnfolderBase]: 17152/35880 cut-off events. [2024-11-09 15:12:58,914 INFO L125 PetriNetUnfolderBase]: For 627/627 co-relation queries the response was YES. [2024-11-09 15:12:58,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58744 conditions, 35880 events. 17152/35880 cut-off events. For 627/627 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 370253 event pairs, 11443 based on Foata normal form. 2/29288 useless extension candidates. Maximal degree in co-relation 56979. Up to 22345 conditions per place. [2024-11-09 15:12:59,117 INFO L140 encePairwiseOnDemand]: 148/159 looper letters, 62 selfloop transitions, 7 changer transitions 0/160 dead transitions. [2024-11-09 15:12:59,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 160 transitions, 473 flow [2024-11-09 15:12:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:12:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:12:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2024-11-09 15:12:59,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7059748427672956 [2024-11-09 15:12:59,133 INFO L175 Difference]: Start difference. First operand has 147 places, 154 transitions, 323 flow. Second operand 4 states and 449 transitions. [2024-11-09 15:12:59,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 160 transitions, 473 flow [2024-11-09 15:12:59,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 160 transitions, 464 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 15:12:59,159 INFO L231 Difference]: Finished difference. Result has 148 places, 160 transitions, 374 flow [2024-11-09 15:12:59,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=148, PETRI_TRANSITIONS=160} [2024-11-09 15:12:59,165 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 1 predicate places. [2024-11-09 15:12:59,167 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 160 transitions, 374 flow [2024-11-09 15:12:59,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:12:59,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:12:59,168 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:12:59,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:12:59,168 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-09 15:12:59,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:12:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1212189490, now seen corresponding path program 1 times [2024-11-09 15:12:59,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:12:59,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273308229] [2024-11-09 15:12:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:59,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:12:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:59,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:12:59,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273308229] [2024-11-09 15:12:59,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273308229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:12:59,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600114903] [2024-11-09 15:12:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:12:59,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:12:59,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:59,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:12:59,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:12:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:12:59,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:12:59,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:12:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:12:59,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:12:59,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600114903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:12:59,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:12:59,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:12:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177980738] [2024-11-09 15:12:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:12:59,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:12:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:12:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:12:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:12:59,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 159 [2024-11-09 15:12:59,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 160 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 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) [2024-11-09 15:12:59,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:12:59,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 159 [2024-11-09 15:12:59,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:01,878 INFO L124 PetriNetUnfolderBase]: 17152/35878 cut-off events. [2024-11-09 15:13:01,879 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-09 15:13:01,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58571 conditions, 35878 events. 17152/35878 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 370114 event pairs, 11443 based on Foata normal form. 2/29289 useless extension candidates. Maximal degree in co-relation 58521. Up to 22335 conditions per place. [2024-11-09 15:13:02,099 INFO L140 encePairwiseOnDemand]: 150/159 looper letters, 55 selfloop transitions, 12 changer transitions 0/158 dead transitions. [2024-11-09 15:13:02,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 158 transitions, 500 flow [2024-11-09 15:13:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:13:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:13:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 633 transitions. [2024-11-09 15:13:02,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6635220125786163 [2024-11-09 15:13:02,104 INFO L175 Difference]: Start difference. First operand has 148 places, 160 transitions, 374 flow. Second operand 6 states and 633 transitions. [2024-11-09 15:13:02,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 158 transitions, 500 flow [2024-11-09 15:13:02,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 158 transitions, 500 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:13:02,107 INFO L231 Difference]: Finished difference. Result has 151 places, 158 transitions, 390 flow [2024-11-09 15:13:02,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=390, PETRI_PLACES=151, PETRI_TRANSITIONS=158} [2024-11-09 15:13:02,108 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 4 predicate places. [2024-11-09 15:13:02,108 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 158 transitions, 390 flow [2024-11-09 15:13:02,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 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) [2024-11-09 15:13:02,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:02,109 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:13:02,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:13:02,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:02,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-09 15:13:02,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:02,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1076832701, now seen corresponding path program 1 times [2024-11-09 15:13:02,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:02,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673053547] [2024-11-09 15:13:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:02,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:02,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:02,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673053547] [2024-11-09 15:13:02,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673053547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:02,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579576232] [2024-11-09 15:13:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:02,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:02,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:02,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:02,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:13:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:02,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:02,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:02,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:02,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579576232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:02,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:02,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:13:02,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232154736] [2024-11-09 15:13:02,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:02,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:13:02,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:02,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:13:02,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:13:02,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 159 [2024-11-09 15:13:02,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 158 transitions, 390 flow. Second operand has 12 states, 12 states have (on average 95.08333333333333) internal successors, (1141), 12 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:02,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:02,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 159 [2024-11-09 15:13:02,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:04,786 INFO L124 PetriNetUnfolderBase]: 17158/35902 cut-off events. [2024-11-09 15:13:04,787 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-11-09 15:13:04,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58665 conditions, 35902 events. 17158/35902 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 370144 event pairs, 11443 based on Foata normal form. 6/29316 useless extension candidates. Maximal degree in co-relation 58523. Up to 22346 conditions per place. [2024-11-09 15:13:05,001 INFO L140 encePairwiseOnDemand]: 150/159 looper letters, 60 selfloop transitions, 25 changer transitions 0/176 dead transitions. [2024-11-09 15:13:05,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 176 transitions, 674 flow [2024-11-09 15:13:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1031 transitions. [2024-11-09 15:13:05,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484276729559748 [2024-11-09 15:13:05,004 INFO L175 Difference]: Start difference. First operand has 151 places, 158 transitions, 390 flow. Second operand 10 states and 1031 transitions. [2024-11-09 15:13:05,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 176 transitions, 674 flow [2024-11-09 15:13:05,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 176 transitions, 616 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 15:13:05,010 INFO L231 Difference]: Finished difference. Result has 158 places, 176 transitions, 530 flow [2024-11-09 15:13:05,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=530, PETRI_PLACES=158, PETRI_TRANSITIONS=176} [2024-11-09 15:13:05,012 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2024-11-09 15:13:05,012 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 176 transitions, 530 flow [2024-11-09 15:13:05,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 95.08333333333333) internal successors, (1141), 12 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:05,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:05,013 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:05,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:05,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 15:13:05,214 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-09 15:13:05,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1196577068, now seen corresponding path program 1 times [2024-11-09 15:13:05,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:05,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648560356] [2024-11-09 15:13:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:05,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:05,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:05,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648560356] [2024-11-09 15:13:05,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648560356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:05,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:05,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:05,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030291203] [2024-11-09 15:13:05,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:05,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:05,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:05,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 159 [2024-11-09 15:13:05,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 176 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:05,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:05,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 159 [2024-11-09 15:13:05,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:09,583 INFO L124 PetriNetUnfolderBase]: 38916/68048 cut-off events. [2024-11-09 15:13:09,583 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2024-11-09 15:13:09,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120042 conditions, 68048 events. 38916/68048 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 2163. Compared 642582 event pairs, 11097 based on Foata normal form. 1928/58964 useless extension candidates. Maximal degree in co-relation 119975. Up to 23712 conditions per place. [2024-11-09 15:13:10,171 INFO L140 encePairwiseOnDemand]: 144/159 looper letters, 161 selfloop transitions, 10 changer transitions 0/252 dead transitions. [2024-11-09 15:13:10,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 252 transitions, 1030 flow [2024-11-09 15:13:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 497 transitions. [2024-11-09 15:13:10,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7814465408805031 [2024-11-09 15:13:10,174 INFO L175 Difference]: Start difference. First operand has 158 places, 176 transitions, 530 flow. Second operand 4 states and 497 transitions. [2024-11-09 15:13:10,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 252 transitions, 1030 flow [2024-11-09 15:13:10,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 252 transitions, 1006 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-09 15:13:10,178 INFO L231 Difference]: Finished difference. Result has 160 places, 180 transitions, 572 flow [2024-11-09 15:13:10,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=572, PETRI_PLACES=160, PETRI_TRANSITIONS=180} [2024-11-09 15:13:10,179 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 13 predicate places. [2024-11-09 15:13:10,179 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 180 transitions, 572 flow [2024-11-09 15:13:10,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:10,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:10,180 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:10,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:13:10,180 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-09 15:13:10,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1560815303, now seen corresponding path program 1 times [2024-11-09 15:13:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:10,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645682886] [2024-11-09 15:13:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:10,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:10,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:10,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645682886] [2024-11-09 15:13:10,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645682886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:10,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:10,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:13:10,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358628231] [2024-11-09 15:13:10,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:10,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:10,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:10,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:10,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:10,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 159 [2024-11-09 15:13:10,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 180 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:10,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 159 [2024-11-09 15:13:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:13,618 INFO L124 PetriNetUnfolderBase]: 22911/48741 cut-off events. [2024-11-09 15:13:13,618 INFO L125 PetriNetUnfolderBase]: For 9133/10521 co-relation queries the response was YES. [2024-11-09 15:13:13,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86617 conditions, 48741 events. 22911/48741 cut-off events. For 9133/10521 co-relation queries the response was YES. Maximal size of possible extension queue 1657. Compared 533989 event pairs, 15695 based on Foata normal form. 703/40822 useless extension candidates. Maximal degree in co-relation 86525. Up to 30037 conditions per place. [2024-11-09 15:13:13,907 INFO L140 encePairwiseOnDemand]: 154/159 looper letters, 87 selfloop transitions, 9 changer transitions 0/189 dead transitions. [2024-11-09 15:13:13,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 189 transitions, 827 flow [2024-11-09 15:13:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:13:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:13:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 561 transitions. [2024-11-09 15:13:13,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7056603773584905 [2024-11-09 15:13:13,910 INFO L175 Difference]: Start difference. First operand has 160 places, 180 transitions, 572 flow. Second operand 5 states and 561 transitions. [2024-11-09 15:13:13,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 189 transitions, 827 flow [2024-11-09 15:13:13,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 189 transitions, 827 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:13:13,980 INFO L231 Difference]: Finished difference. Result has 165 places, 180 transitions, 601 flow [2024-11-09 15:13:13,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=601, PETRI_PLACES=165, PETRI_TRANSITIONS=180} [2024-11-09 15:13:13,983 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 18 predicate places. [2024-11-09 15:13:13,983 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 180 transitions, 601 flow [2024-11-09 15:13:13,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:13,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:13,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:13,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:13:13,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-09 15:13:13,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash 798857170, now seen corresponding path program 1 times [2024-11-09 15:13:13,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:13,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192749339] [2024-11-09 15:13:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:13,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:14,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:14,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192749339] [2024-11-09 15:13:14,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192749339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:14,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826049665] [2024-11-09 15:13:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:14,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:14,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:14,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:14,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:13:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:14,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 15:13:14,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:14,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:13:14,345 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 17 treesize of output 9 [2024-11-09 15:13:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:14,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:14,402 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 16 treesize of output 14 [2024-11-09 15:13:14,405 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 22 treesize of output 20 [2024-11-09 15:13:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:13:14,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826049665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:14,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:14,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-09 15:13:14,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486294971] [2024-11-09 15:13:14,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:14,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 15:13:14,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:14,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 15:13:14,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-09 15:13:14,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 159 [2024-11-09 15:13:14,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 180 transitions, 601 flow. Second operand has 15 states, 15 states have (on average 93.66666666666667) internal successors, (1405), 15 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:14,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:14,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 159 [2024-11-09 15:13:14,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:23,462 INFO L124 PetriNetUnfolderBase]: 58374/114277 cut-off events. [2024-11-09 15:13:23,463 INFO L125 PetriNetUnfolderBase]: For 24690/24818 co-relation queries the response was YES. [2024-11-09 15:13:23,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218582 conditions, 114277 events. 58374/114277 cut-off events. For 24690/24818 co-relation queries the response was YES. Maximal size of possible extension queue 2710. Compared 1253691 event pairs, 8097 based on Foata normal form. 128/100982 useless extension candidates. Maximal degree in co-relation 218486. Up to 28284 conditions per place. [2024-11-09 15:13:24,562 INFO L140 encePairwiseOnDemand]: 141/159 looper letters, 225 selfloop transitions, 27 changer transitions 0/341 dead transitions. [2024-11-09 15:13:24,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 341 transitions, 1481 flow [2024-11-09 15:13:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1150 transitions. [2024-11-09 15:13:24,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7232704402515723 [2024-11-09 15:13:24,565 INFO L175 Difference]: Start difference. First operand has 165 places, 180 transitions, 601 flow. Second operand 10 states and 1150 transitions. [2024-11-09 15:13:24,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 341 transitions, 1481 flow [2024-11-09 15:13:25,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 341 transitions, 1471 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:25,821 INFO L231 Difference]: Finished difference. Result has 176 places, 189 transitions, 727 flow [2024-11-09 15:13:25,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=727, PETRI_PLACES=176, PETRI_TRANSITIONS=189} [2024-11-09 15:13:25,822 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 29 predicate places. [2024-11-09 15:13:25,822 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 189 transitions, 727 flow [2024-11-09 15:13:25,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 93.66666666666667) internal successors, (1405), 15 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:25,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:25,823 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:13:25,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:13:26,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:26,024 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-11-09 15:13:26,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash -300837258, now seen corresponding path program 2 times [2024-11-09 15:13:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:26,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222127195] [2024-11-09 15:13:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:26,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222127195] [2024-11-09 15:13:26,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222127195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928956080] [2024-11-09 15:13:26,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:13:26,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:26,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:26,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:26,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:13:26,259 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:13:26,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:13:26,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:13:26,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:13:26,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:13:26,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928956080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:26,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:26,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:13:26,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955716611] [2024-11-09 15:13:26,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:26,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:13:26,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:26,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:13:26,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:13:26,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 159 [2024-11-09 15:13:26,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 189 transitions, 727 flow. Second operand has 14 states, 14 states have (on average 95.14285714285714) internal successors, (1332), 14 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:26,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:26,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 159 [2024-11-09 15:13:26,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand