./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:40:06,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:40:06,535 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:40:06,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:40:06,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:40:06,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:40:06,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:40:06,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:40:06,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:40:06,579 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:40:06,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:40:06,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:40:06,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:40:06,591 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:40:06,592 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:40:06,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:40:06,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:40:06,592 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:40:06,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:40:06,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:40:06,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:40:06,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:40:06,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:40:06,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:40:06,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:40:06,602 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:40:06,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:40:06,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:40:06,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:40:06,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:40:06,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:40:06,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:40:06,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:40:06,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:40:06,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:40:06,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:40:06,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:40:06,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:40:06,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:40:06,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:40:06,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:40:06,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:40:06,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 [2024-11-20 09:40:06,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:40:06,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:40:06,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:40:06,914 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:40:06,914 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:40:06,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-11-20 09:40:08,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:40:08,629 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:40:08,630 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-11-20 09:40:08,644 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cb218b4/cc765b199f8d4c918769d7b391a1dfd3/FLAGd5495811b [2024-11-20 09:40:08,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5cb218b4/cc765b199f8d4c918769d7b391a1dfd3 [2024-11-20 09:40:08,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:40:08,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:40:08,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:40:08,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:40:08,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:40:08,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:40:08" (1/1) ... [2024-11-20 09:40:08,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74647593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:08, skipping insertion in model container [2024-11-20 09:40:08,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:40:08" (1/1) ... [2024-11-20 09:40:08,714 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:40:08,975 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2451,2464] [2024-11-20 09:40:08,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:40:09,006 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:40:09,027 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2451,2464] [2024-11-20 09:40:09,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:40:09,070 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:40:09,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09 WrapperNode [2024-11-20 09:40:09,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:40:09,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:40:09,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:40:09,077 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:40:09,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,130 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 265 [2024-11-20 09:40:09,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:40:09,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:40:09,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:40:09,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:40:09,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,156 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,192 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-20 09:40:09,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,211 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:40:09,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:40:09,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:40:09,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:40:09,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (1/1) ... [2024-11-20 09:40:09,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:40:09,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:40:09,282 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) [2024-11-20 09:40:09,285 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 [2024-11-20 09:40:09,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:40:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:40:09,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:40:09,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:40:09,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:40:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:40:09,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:40:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:40:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:40:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:40:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:40:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:40:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:40:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:40:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:40:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:40:09,365 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:40:09,496 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:40:09,498 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:40:09,973 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:40:09,974 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:40:10,207 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:40:10,208 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-20 09:40:10,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:40:10 BoogieIcfgContainer [2024-11-20 09:40:10,208 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:40:10,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:40:10,209 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:40:10,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:40:10,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:40:08" (1/3) ... [2024-11-20 09:40:10,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a193946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:40:10, skipping insertion in model container [2024-11-20 09:40:10,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:09" (2/3) ... [2024-11-20 09:40:10,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a193946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:40:10, skipping insertion in model container [2024-11-20 09:40:10,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:40:10" (3/3) ... [2024-11-20 09:40:10,218 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2024-11-20 09:40:10,233 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:40:10,233 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:40:10,233 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:40:10,288 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:40:10,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2024-11-20 09:40:10,340 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-20 09:40:10,341 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:40:10,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-11-20 09:40:10,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2024-11-20 09:40:10,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2024-11-20 09:40:10,358 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:40:10,367 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;@6ca6ea96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:40:10,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:40:10,380 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:40:10,381 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-20 09:40:10,381 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:40:10,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:10,382 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:40:10,382 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:40:10,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:10,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1078802292, now seen corresponding path program 1 times [2024-11-20 09:40:10,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:10,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448974544] [2024-11-20 09:40:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:10,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:10,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448974544] [2024-11-20 09:40:10,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448974544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:40:10,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:40:10,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:40:10,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055602744] [2024-11-20 09:40:10,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:10,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:40:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:10,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:40:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:40:10,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-20 09:40:10,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-11-20 09:40:10,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:10,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-20 09:40:10,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:11,069 INFO L124 PetriNetUnfolderBase]: 389/571 cut-off events. [2024-11-20 09:40:11,069 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-20 09:40:11,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 571 events. 389/571 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1809 event pairs, 124 based on Foata normal form. 1/419 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-11-20 09:40:11,074 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 38 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2024-11-20 09:40:11,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 207 flow [2024-11-20 09:40:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:40:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:40:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-11-20 09:40:11,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-11-20 09:40:11,084 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 56 transitions. [2024-11-20 09:40:11,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 207 flow [2024-11-20 09:40:11,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 44 transitions, 185 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 09:40:11,090 INFO L231 Difference]: Finished difference. Result has 28 places, 30 transitions, 86 flow [2024-11-20 09:40:11,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=30} [2024-11-20 09:40:11,093 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-11-20 09:40:11,094 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 30 transitions, 86 flow [2024-11-20 09:40:11,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-11-20 09:40:11,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:11,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:40:11,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:40:11,095 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:40:11,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:11,095 INFO L85 PathProgramCache]: Analyzing trace with hash -440324353, now seen corresponding path program 1 times [2024-11-20 09:40:11,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:11,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335125649] [2024-11-20 09:40:11,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:11,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:11,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:11,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335125649] [2024-11-20 09:40:11,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335125649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:40:11,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:40:11,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:40:11,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538581563] [2024-11-20 09:40:11,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:11,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:40:11,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:40:11,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:40:11,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-20 09:40:11,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 30 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-20 09:40:11,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:11,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-20 09:40:11,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:11,702 INFO L124 PetriNetUnfolderBase]: 711/1066 cut-off events. [2024-11-20 09:40:11,702 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-11-20 09:40:11,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2551 conditions, 1066 events. 711/1066 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3820 event pairs, 401 based on Foata normal form. 46/1102 useless extension candidates. Maximal degree in co-relation 926. Up to 571 conditions per place. [2024-11-20 09:40:11,713 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 61 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-11-20 09:40:11,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 77 transitions, 362 flow [2024-11-20 09:40:11,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:40:11,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:40:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-11-20 09:40:11,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5053763440860215 [2024-11-20 09:40:11,718 INFO L175 Difference]: Start difference. First operand has 28 places, 30 transitions, 86 flow. Second operand 6 states and 94 transitions. [2024-11-20 09:40:11,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 77 transitions, 362 flow [2024-11-20 09:40:11,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 77 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:40:11,720 INFO L231 Difference]: Finished difference. Result has 36 places, 43 transitions, 186 flow [2024-11-20 09:40:11,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=36, PETRI_TRANSITIONS=43} [2024-11-20 09:40:11,721 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-11-20 09:40:11,721 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 43 transitions, 186 flow [2024-11-20 09:40:11,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-20 09:40:11,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:11,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:40:11,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:40:11,727 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:40:11,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:11,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1098836768, now seen corresponding path program 1 times [2024-11-20 09:40:11,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:11,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966554694] [2024-11-20 09:40:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:11,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:11,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:11,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966554694] [2024-11-20 09:40:11,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966554694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:40:11,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:40:11,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:40:11,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449698149] [2024-11-20 09:40:11,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:11,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:40:11,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:40:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:40:11,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-20 09:40:11,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-20 09:40:11,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:11,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-20 09:40:11,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:12,284 INFO L124 PetriNetUnfolderBase]: 619/947 cut-off events. [2024-11-20 09:40:12,285 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-11-20 09:40:12,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 947 events. 619/947 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3342 event pairs, 372 based on Foata normal form. 41/985 useless extension candidates. Maximal degree in co-relation 1459. Up to 571 conditions per place. [2024-11-20 09:40:12,296 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 56 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2024-11-20 09:40:12,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 72 transitions, 424 flow [2024-11-20 09:40:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:40:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:40:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-11-20 09:40:12,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.489247311827957 [2024-11-20 09:40:12,302 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 186 flow. Second operand 6 states and 91 transitions. [2024-11-20 09:40:12,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 72 transitions, 424 flow [2024-11-20 09:40:12,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:40:12,307 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 237 flow [2024-11-20 09:40:12,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2024-11-20 09:40:12,312 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-11-20 09:40:12,312 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 237 flow [2024-11-20 09:40:12,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-20 09:40:12,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:12,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:40:12,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:40:12,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:40:12,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash -688183846, now seen corresponding path program 1 times [2024-11-20 09:40:12,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:12,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187726466] [2024-11-20 09:40:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:12,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:12,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:12,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187726466] [2024-11-20 09:40:12,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187726466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:40:12,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:40:12,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:40:12,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761905159] [2024-11-20 09:40:12,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:12,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:40:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:12,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:40:12,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:40:12,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-20 09:40:12,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-20 09:40:12,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:12,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-20 09:40:12,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:12,620 INFO L124 PetriNetUnfolderBase]: 519/800 cut-off events. [2024-11-20 09:40:12,620 INFO L125 PetriNetUnfolderBase]: For 805/805 co-relation queries the response was YES. [2024-11-20 09:40:12,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 800 events. 519/800 cut-off events. For 805/805 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2661 event pairs, 333 based on Foata normal form. 22/819 useless extension candidates. Maximal degree in co-relation 1617. Up to 571 conditions per place. [2024-11-20 09:40:12,624 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 6 changer transitions 33/66 dead transitions. [2024-11-20 09:40:12,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 445 flow [2024-11-20 09:40:12,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:40:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:40:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-20 09:40:12,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-11-20 09:40:12,626 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 237 flow. Second operand 6 states and 87 transitions. [2024-11-20 09:40:12,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 445 flow [2024-11-20 09:40:12,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 424 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 09:40:12,629 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 154 flow [2024-11-20 09:40:12,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2024-11-20 09:40:12,630 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-11-20 09:40:12,630 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 154 flow [2024-11-20 09:40:12,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-20 09:40:12,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:12,631 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] [2024-11-20 09:40:12,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:40:12,631 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:40:12,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:12,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1253641488, now seen corresponding path program 1 times [2024-11-20 09:40:12,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:12,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489734586] [2024-11-20 09:40:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:12,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:40:12,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:12,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489734586] [2024-11-20 09:40:12,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489734586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:40:12,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019722396] [2024-11-20 09:40:12,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:12,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:12,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:40:12,730 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) [2024-11-20 09:40:12,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:40:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:12,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:40:12,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:40:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:40:13,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:40:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:40:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019722396] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:40:13,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:40:13,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-20 09:40:13,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904517792] [2024-11-20 09:40:13,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:13,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:40:13,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:13,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:40:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-20 09:40:13,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-20 09:40:13,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-11-20 09:40:13,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:13,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-20 09:40:13,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:13,177 INFO L124 PetriNetUnfolderBase]: 377/554 cut-off events. [2024-11-20 09:40:13,178 INFO L125 PetriNetUnfolderBase]: For 549/549 co-relation queries the response was YES. [2024-11-20 09:40:13,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 554 events. 377/554 cut-off events. For 549/549 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1684 event pairs, 150 based on Foata normal form. 50/603 useless extension candidates. Maximal degree in co-relation 1686. Up to 385 conditions per place. [2024-11-20 09:40:13,181 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 40 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-11-20 09:40:13,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 298 flow [2024-11-20 09:40:13,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:40:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:40:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-20 09:40:13,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-11-20 09:40:13,182 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 154 flow. Second operand 5 states and 59 transitions. [2024-11-20 09:40:13,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 298 flow [2024-11-20 09:40:13,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 234 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-11-20 09:40:13,185 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 127 flow [2024-11-20 09:40:13,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2024-11-20 09:40:13,188 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-11-20 09:40:13,190 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 127 flow [2024-11-20 09:40:13,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-11-20 09:40:13,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:13,191 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] [2024-11-20 09:40:13,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:40:13,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:13,395 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:40:13,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1836217093, now seen corresponding path program 1 times [2024-11-20 09:40:13,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:13,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202080086] [2024-11-20 09:40:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:13,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:40:13,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:13,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202080086] [2024-11-20 09:40:13,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202080086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:40:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630491256] [2024-11-20 09:40:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:13,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:13,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:40:13,543 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) [2024-11-20 09:40:13,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:40:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:13,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:40:13,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:40:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:40:13,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:40:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:40:13,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630491256] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:40:13,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:40:13,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-20 09:40:13,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018363530] [2024-11-20 09:40:13,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:13,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:40:13,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:13,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:40:13,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-20 09:40:13,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-20 09:40:13,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-11-20 09:40:13,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:13,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-20 09:40:13,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:13,800 INFO L124 PetriNetUnfolderBase]: 383/560 cut-off events. [2024-11-20 09:40:13,801 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-11-20 09:40:13,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 560 events. 383/560 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1675 event pairs, 164 based on Foata normal form. 42/599 useless extension candidates. Maximal degree in co-relation 1518. Up to 418 conditions per place. [2024-11-20 09:40:13,804 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 43 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-11-20 09:40:13,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 280 flow [2024-11-20 09:40:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:40:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:40:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-20 09:40:13,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-11-20 09:40:13,806 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 127 flow. Second operand 5 states and 60 transitions. [2024-11-20 09:40:13,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 280 flow [2024-11-20 09:40:13,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 262 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-20 09:40:13,808 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 137 flow [2024-11-20 09:40:13,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-11-20 09:40:13,809 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-11-20 09:40:13,809 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 137 flow [2024-11-20 09:40:13,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-11-20 09:40:13,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:13,810 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] [2024-11-20 09:40:13,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 09:40:14,013 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,SelfDestructingSolverStorable5 [2024-11-20 09:40:14,014 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:40:14,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:14,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2094722590, now seen corresponding path program 1 times [2024-11-20 09:40:14,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:14,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372502946] [2024-11-20 09:40:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:14,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 09:40:14,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:14,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372502946] [2024-11-20 09:40:14,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372502946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:40:14,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368664817] [2024-11-20 09:40:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:14,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:14,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:40:14,163 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) [2024-11-20 09:40:14,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:40:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:14,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:40:14,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:40:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 09:40:14,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:40:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 09:40:14,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368664817] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:40:14,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:40:14,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-20 09:40:14,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110209456] [2024-11-20 09:40:14,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:14,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:40:14,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:14,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:40:14,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-20 09:40:14,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-20 09:40:14,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-11-20 09:40:14,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:14,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-20 09:40:14,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:14,474 INFO L124 PetriNetUnfolderBase]: 432/630 cut-off events. [2024-11-20 09:40:14,476 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-11-20 09:40:14,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 630 events. 432/630 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1876 event pairs, 202 based on Foata normal form. 37/664 useless extension candidates. Maximal degree in co-relation 1848. Up to 502 conditions per place. [2024-11-20 09:40:14,479 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 43 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-11-20 09:40:14,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 296 flow [2024-11-20 09:40:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:40:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:40:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-20 09:40:14,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-11-20 09:40:14,481 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 137 flow. Second operand 5 states and 58 transitions. [2024-11-20 09:40:14,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 296 flow [2024-11-20 09:40:14,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 278 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-20 09:40:14,483 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 147 flow [2024-11-20 09:40:14,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2024-11-20 09:40:14,483 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2024-11-20 09:40:14,484 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 147 flow [2024-11-20 09:40:14,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-11-20 09:40:14,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:14,484 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, 1] [2024-11-20 09:40:14,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 09:40:14,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:14,685 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:40:14,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1507050994, now seen corresponding path program 1 times [2024-11-20 09:40:14,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:14,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578767462] [2024-11-20 09:40:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:14,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:40:15,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:15,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578767462] [2024-11-20 09:40:15,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578767462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:40:15,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953616509] [2024-11-20 09:40:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:15,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:15,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:40:15,826 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) [2024-11-20 09:40:15,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:40:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:15,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-20 09:40:15,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:40:15,979 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 [2024-11-20 09:40:16,026 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 09:40:16,028 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 [2024-11-20 09:40:16,307 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2024-11-20 09:40:16,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2024-11-20 09:40:16,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-11-20 09:40:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:40:16,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:40:21,245 WARN L851 $PredicateComparison]: unable to prove that (forall ((~C~0.offset Int) (~B~0.offset Int)) (let ((.cse2 (* 4 |c_thread3Thread1of1ForFork0_~i~2#1|))) (let ((.cse0 (select (select |c_#memory_int#1| c_~B~0.base) (+ .cse2 ~B~0.offset))) (.cse1 (select (select |c_#memory_int#1| c_~A~0.base) (+ .cse2 c_~A~0.offset)))) (= (+ .cse0 c_~csum~0 .cse1) (+ c_~asum~0 c_~bsum~0 (select (select (store |c_#memory_int#1| c_~C~0.base (store (select |c_#memory_int#1| c_~C~0.base) (+ .cse2 ~C~0.offset) (+ .cse0 .cse1))) c_~B~0.base) (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) ~B~0.offset))))))) is different from false [2024-11-20 09:40:25,494 WARN L851 $PredicateComparison]: unable to prove that (forall ((~C~0.offset Int) (~B~0.offset Int)) (let ((.cse0 (select (select |c_#memory_int#1| c_~A~0.base) c_~A~0.offset)) (.cse1 (select (select |c_#memory_int#1| c_~B~0.base) ~B~0.offset))) (= (+ c_~csum~0 .cse0 .cse1) (+ c_~asum~0 c_~bsum~0 (select (select (store |c_#memory_int#1| c_~C~0.base (store (select |c_#memory_int#1| c_~C~0.base) ~C~0.offset (+ .cse0 .cse1))) c_~B~0.base) (+ (* |c_thread2Thread1of1ForFork2_~i~1#1| 4) ~B~0.offset)))))) is different from false [2024-11-20 09:40:26,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:40:26,194 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 52 treesize of output 40 [2024-11-20 09:40:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2024-11-20 09:40:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953616509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:40:28,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:40:28,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 29 [2024-11-20 09:40:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250179228] [2024-11-20 09:40:28,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:40:28,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-20 09:40:28,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-20 09:40:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=658, Unknown=2, NotChecked=106, Total=870 [2024-11-20 09:40:28,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-20 09:40:28,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 147 flow. Second operand has 30 states, 30 states have (on average 6.2) internal successors, (186), 30 states have internal predecessors, (186), 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) [2024-11-20 09:40:28,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:28,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-20 09:40:28,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:38,358 INFO L124 PetriNetUnfolderBase]: 618/900 cut-off events. [2024-11-20 09:40:38,358 INFO L125 PetriNetUnfolderBase]: For 693/693 co-relation queries the response was YES. [2024-11-20 09:40:38,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 900 events. 618/900 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3036 event pairs, 27 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 2809. Up to 659 conditions per place. [2024-11-20 09:40:38,363 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 65 selfloop transitions, 30 changer transitions 1/97 dead transitions. [2024-11-20 09:40:38,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 97 transitions, 573 flow [2024-11-20 09:40:38,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 09:40:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 09:40:38,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-11-20 09:40:38,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36228287841191065 [2024-11-20 09:40:38,366 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 147 flow. Second operand 13 states and 146 transitions. [2024-11-20 09:40:38,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 97 transitions, 573 flow [2024-11-20 09:40:38,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 97 transitions, 546 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-20 09:40:38,368 INFO L231 Difference]: Finished difference. Result has 52 places, 56 transitions, 328 flow [2024-11-20 09:40:38,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=328, PETRI_PLACES=52, PETRI_TRANSITIONS=56} [2024-11-20 09:40:38,369 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-11-20 09:40:38,369 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 56 transitions, 328 flow [2024-11-20 09:40:38,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.2) internal successors, (186), 30 states have internal predecessors, (186), 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) [2024-11-20 09:40:38,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:38,370 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, 1] [2024-11-20 09:40:38,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 09:40:38,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:38,574 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:40:38,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash 219702430, now seen corresponding path program 2 times [2024-11-20 09:40:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:38,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130225655] [2024-11-20 09:40:38,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:38,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:40:41,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:41,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130225655] [2024-11-20 09:40:41,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130225655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:40:41,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389946326] [2024-11-20 09:40:41,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:40:41,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:41,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:40:41,406 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) [2024-11-20 09:40:41,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 09:40:41,497 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:40:41,498 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:40:41,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-20 09:40:41,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:40:45,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:40:45,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-20 09:40:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:40:46,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:40:47,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:40:47,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 95 [2024-11-20 09:40:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:40:49,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389946326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:40:49,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:40:49,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 7] total 25 [2024-11-20 09:40:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155860095] [2024-11-20 09:40:49,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:40:49,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 09:40:49,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:49,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 09:40:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2024-11-20 09:40:49,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-20 09:40:49,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 328 flow. Second operand has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 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) [2024-11-20 09:40:49,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:49,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-20 09:40:49,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:58,195 INFO L124 PetriNetUnfolderBase]: 720/1047 cut-off events. [2024-11-20 09:40:58,195 INFO L125 PetriNetUnfolderBase]: For 1418/1418 co-relation queries the response was YES. [2024-11-20 09:40:58,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3924 conditions, 1047 events. 720/1047 cut-off events. For 1418/1418 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3589 event pairs, 117 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 3874. Up to 894 conditions per place. [2024-11-20 09:40:58,201 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 69 selfloop transitions, 35 changer transitions 1/106 dead transitions. [2024-11-20 09:40:58,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 106 transitions, 782 flow [2024-11-20 09:40:58,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 09:40:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 09:40:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 133 transitions. [2024-11-20 09:40:58,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33002481389578164 [2024-11-20 09:40:58,203 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 328 flow. Second operand 13 states and 133 transitions. [2024-11-20 09:40:58,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 106 transitions, 782 flow [2024-11-20 09:40:58,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 106 transitions, 721 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-11-20 09:40:58,208 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 550 flow [2024-11-20 09:40:58,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=550, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2024-11-20 09:40:58,210 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-11-20 09:40:58,211 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 550 flow [2024-11-20 09:40:58,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 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) [2024-11-20 09:40:58,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:58,211 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, 1] [2024-11-20 09:40:58,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 09:40:58,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:58,413 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:40:58,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash 385013276, now seen corresponding path program 3 times [2024-11-20 09:40:58,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:58,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469969650] [2024-11-20 09:40:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:58,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:41:00,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:00,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469969650] [2024-11-20 09:41:00,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469969650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:00,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346239410] [2024-11-20 09:41:00,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:41:00,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:00,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:00,996 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) [2024-11-20 09:41:00,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 09:41:01,092 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 09:41:01,092 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:41:01,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-20 09:41:01,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:05,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:41:05,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-20 09:41:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:41:05,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:06,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:41:06,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 87 [2024-11-20 09:41:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:41:08,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346239410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:41:08,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:41:08,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 23 [2024-11-20 09:41:08,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376168244] [2024-11-20 09:41:08,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:41:08,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 09:41:08,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:08,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 09:41:08,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-20 09:41:08,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-20 09:41:08,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 550 flow. Second operand has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 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) [2024-11-20 09:41:08,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:08,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-20 09:41:08,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:15,179 INFO L124 PetriNetUnfolderBase]: 841/1221 cut-off events. [2024-11-20 09:41:15,180 INFO L125 PetriNetUnfolderBase]: For 2545/2545 co-relation queries the response was YES. [2024-11-20 09:41:15,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5057 conditions, 1221 events. 841/1221 cut-off events. For 2545/2545 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4330 event pairs, 144 based on Foata normal form. 1/1222 useless extension candidates. Maximal degree in co-relation 4998. Up to 1045 conditions per place. [2024-11-20 09:41:15,194 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 89 selfloop transitions, 40 changer transitions 1/131 dead transitions. [2024-11-20 09:41:15,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 131 transitions, 1087 flow [2024-11-20 09:41:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:41:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:41:15,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-11-20 09:41:15,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-11-20 09:41:15,196 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 550 flow. Second operand 10 states and 123 transitions. [2024-11-20 09:41:15,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 131 transitions, 1087 flow [2024-11-20 09:41:15,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 131 transitions, 1041 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-20 09:41:15,206 INFO L231 Difference]: Finished difference. Result has 78 places, 99 transitions, 813 flow [2024-11-20 09:41:15,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=813, PETRI_PLACES=78, PETRI_TRANSITIONS=99} [2024-11-20 09:41:15,208 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-11-20 09:41:15,208 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 99 transitions, 813 flow [2024-11-20 09:41:15,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 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) [2024-11-20 09:41:15,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:15,209 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, 1] [2024-11-20 09:41:15,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 09:41:15,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:15,411 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:41:15,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:15,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1448156428, now seen corresponding path program 4 times [2024-11-20 09:41:15,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:15,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500107393] [2024-11-20 09:41:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:15,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:18,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:18,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500107393] [2024-11-20 09:41:18,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500107393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:18,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252030377] [2024-11-20 09:41:18,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:41:18,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:18,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:18,550 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) [2024-11-20 09:41:18,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 09:41:18,634 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:41:18,634 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:41:18,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-20 09:41:18,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:21,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:41:21,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2024-11-20 09:41:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:41:21,161 INFO L311 TraceCheckSpWp]: Computing backward predicates...