./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:58:53,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:58:54,047 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:58:54,053 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:58:54,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:58:54,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:58:54,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:58:54,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:58:54,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:58:54,091 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:58:54,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:58:54,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:58:54,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:58:54,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:58:54,093 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:58:54,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:58:54,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:58:54,094 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:58:54,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:58:54,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:58:54,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:58:54,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:58:54,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:58:54,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:58:54,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:58:54,097 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:58:54,097 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:58:54,098 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:58:54,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:58:54,098 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:58:54,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:58:54,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:58:54,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:58:54,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:58:54,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:58:54,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:58:54,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:58:54,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:58:54,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:58:54,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:58:54,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:58:54,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:58:54,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:58:54,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:58:54,103 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-10-11 23:58:54,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:58:54,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:58:54,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:58:54,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:58:54,397 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:58:54,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-10-11 23:58:55,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:58:56,183 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:58:56,184 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-10-11 23:58:56,209 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7d2ee209b/911a03f87adc4d14ae479950c2471a49/FLAG8834b98a6 [2024-10-11 23:58:56,226 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7d2ee209b/911a03f87adc4d14ae479950c2471a49 [2024-10-11 23:58:56,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:58:56,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:58:56,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:58:56,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:58:56,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:58:56,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:56,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b4789e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56, skipping insertion in model container [2024-10-11 23:58:56,240 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:56,294 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:58:56,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:58:56,837 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:58:56,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:58:56,955 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:58:56,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56 WrapperNode [2024-10-11 23:58:56,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:58:56,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:58:56,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:58:56,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:58:56,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:56,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,020 INFO L138 Inliner]: procedures = 272, calls = 48, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 307 [2024-10-11 23:58:57,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:58:57,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:58:57,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:58:57,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:58:57,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,057 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 2, 5, 16]. 64 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 8 writes are split as follows [0, 1, 0, 7]. [2024-10-11 23:58:57,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:58:57,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:58:57,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:58:57,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:58:57,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (1/1) ... [2024-10-11 23:58:57,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:58:57,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:58:57,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:58:57,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:58:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 23:58:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 23:58:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:58:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:58:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:58:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:58:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 23:58:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:58:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:58:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:58:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 23:58:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:58:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:58:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 23:58:57,196 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 23:58:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:58:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:58:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:58:57,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 23:58:57,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:58:57,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:58:57,198 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:58:57,376 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:58:57,378 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:58:57,888 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:58:57,889 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:58:58,084 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:58:58,085 INFO L314 CfgBuilder]: Removed 35 assume(true) statements. [2024-10-11 23:58:58,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:58:58 BoogieIcfgContainer [2024-10-11 23:58:58,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:58:58,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:58:58,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:58:58,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:58:58,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:58:56" (1/3) ... [2024-10-11 23:58:58,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0bb7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:58:58, skipping insertion in model container [2024-10-11 23:58:58,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:58:56" (2/3) ... [2024-10-11 23:58:58,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0bb7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:58:58, skipping insertion in model container [2024-10-11 23:58:58,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:58:58" (3/3) ... [2024-10-11 23:58:58,095 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-10-11 23:58:58,115 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:58:58,115 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-11 23:58:58,115 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:58:58,183 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 23:58:58,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 163 transitions, 333 flow [2024-10-11 23:58:58,297 INFO L124 PetriNetUnfolderBase]: 60/256 cut-off events. [2024-10-11 23:58:58,298 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:58:58,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 256 events. 60/256 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1281 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2024-10-11 23:58:58,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 163 transitions, 333 flow [2024-10-11 23:58:58,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 162 transitions, 331 flow [2024-10-11 23:58:58,322 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:58:58,327 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;@be8ce19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:58:58,328 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-11 23:58:58,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:58:58,330 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:58:58,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:58:58,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:58,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:58:58,332 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-11 23:58:58,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash 812701, now seen corresponding path program 1 times [2024-10-11 23:58:58,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:58,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664721526] [2024-10-11 23:58:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:58,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:58,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:58,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664721526] [2024-10-11 23:58:58,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664721526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:58,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:58:58,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:58:58,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286492498] [2024-10-11 23:58:58,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:58,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:58:58,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:58:58,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:58:58,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-10-11 23:58:58,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 162 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:58:58,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:58,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-10-11 23:58:58,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:59,369 INFO L124 PetriNetUnfolderBase]: 920/2872 cut-off events. [2024-10-11 23:58:59,369 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:58:59,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4611 conditions, 2872 events. 920/2872 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23437 event pairs, 760 based on Foata normal form. 512/2965 useless extension candidates. Maximal degree in co-relation 4474. Up to 1730 conditions per place. [2024-10-11 23:58:59,396 INFO L140 encePairwiseOnDemand]: 128/163 looper letters, 63 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-11 23:58:59,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 131 transitions, 403 flow [2024-10-11 23:58:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:58:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:58:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2024-10-11 23:58:59,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5429447852760736 [2024-10-11 23:58:59,417 INFO L175 Difference]: Start difference. First operand has 129 places, 162 transitions, 331 flow. Second operand 4 states and 354 transitions. [2024-10-11 23:58:59,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 131 transitions, 403 flow [2024-10-11 23:58:59,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 131 transitions, 403 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:58:59,427 INFO L231 Difference]: Finished difference. Result has 131 places, 131 transitions, 277 flow [2024-10-11 23:58:59,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=131, PETRI_TRANSITIONS=131} [2024-10-11 23:58:59,432 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 2 predicate places. [2024-10-11 23:58:59,434 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 131 transitions, 277 flow [2024-10-11 23:58:59,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:58:59,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:59,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 23:58:59,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:58:59,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-11 23:58:59,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash 25194617, now seen corresponding path program 1 times [2024-10-11 23:58:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:59,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317576] [2024-10-11 23:58:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:58:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:58:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:58:59,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:58:59,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317576] [2024-10-11 23:58:59,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:58:59,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:58:59,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:58:59,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440613919] [2024-10-11 23:58:59,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:58:59,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:58:59,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:58:59,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:58:59,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:58:59,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-10-11 23:58:59,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 131 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:58:59,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:58:59,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-10-11 23:58:59,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:58:59,951 INFO L124 PetriNetUnfolderBase]: 920/2875 cut-off events. [2024-10-11 23:58:59,951 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 23:58:59,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 2875 events. 920/2875 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23466 event pairs, 760 based on Foata normal form. 1/2458 useless extension candidates. Maximal degree in co-relation 4597. Up to 1734 conditions per place. [2024-10-11 23:58:59,970 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 66 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-10-11 23:58:59,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 133 transitions, 423 flow [2024-10-11 23:58:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:58:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:58:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2024-10-11 23:58:59,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5015337423312883 [2024-10-11 23:58:59,973 INFO L175 Difference]: Start difference. First operand has 131 places, 131 transitions, 277 flow. Second operand 4 states and 327 transitions. [2024-10-11 23:58:59,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 133 transitions, 423 flow [2024-10-11 23:58:59,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 411 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:58:59,982 INFO L231 Difference]: Finished difference. Result has 133 places, 133 transitions, 291 flow [2024-10-11 23:58:59,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=133, PETRI_TRANSITIONS=133} [2024-10-11 23:58:59,983 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 4 predicate places. [2024-10-11 23:58:59,983 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 133 transitions, 291 flow [2024-10-11 23:58:59,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:58:59,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:58:59,984 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:58:59,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:58:59,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-11 23:58:59,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:58:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1045616174, now seen corresponding path program 1 times [2024-10-11 23:58:59,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:58:59,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80761867] [2024-10-11 23:58:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:58:59,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:59:00,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80761867] [2024-10-11 23:59:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80761867] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:00,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:00,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:59:00,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809708065] [2024-10-11 23:59:00,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:00,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:59:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:00,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:59:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:59:00,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-10-11 23:59:00,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 133 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:00,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:00,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-10-11 23:59:00,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:00,432 INFO L124 PetriNetUnfolderBase]: 920/2874 cut-off events. [2024-10-11 23:59:00,432 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 23:59:00,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4625 conditions, 2874 events. 920/2874 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23401 event pairs, 760 based on Foata normal form. 0/2456 useless extension candidates. Maximal degree in co-relation 4607. Up to 1733 conditions per place. [2024-10-11 23:59:00,450 INFO L140 encePairwiseOnDemand]: 160/163 looper letters, 64 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-10-11 23:59:00,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 423 flow [2024-10-11 23:59:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:59:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:59:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-10-11 23:59:00,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296523517382413 [2024-10-11 23:59:00,452 INFO L175 Difference]: Start difference. First operand has 133 places, 133 transitions, 291 flow. Second operand 3 states and 259 transitions. [2024-10-11 23:59:00,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 423 flow [2024-10-11 23:59:00,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 132 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:59:00,456 INFO L231 Difference]: Finished difference. Result has 133 places, 132 transitions, 293 flow [2024-10-11 23:59:00,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=133, PETRI_TRANSITIONS=132} [2024-10-11 23:59:00,457 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 4 predicate places. [2024-10-11 23:59:00,458 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 132 transitions, 293 flow [2024-10-11 23:59:00,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:00,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:00,458 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:00,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:59:00,458 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-11 23:59:00,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:00,459 INFO L85 PathProgramCache]: Analyzing trace with hash 184438201, now seen corresponding path program 1 times [2024-10-11 23:59:00,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:00,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48966453] [2024-10-11 23:59:00,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:00,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:59:00,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:00,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48966453] [2024-10-11 23:59:00,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48966453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:00,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:00,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:59:00,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405997390] [2024-10-11 23:59:00,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:00,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:59:00,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:00,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:59:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:59:00,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 163 [2024-10-11 23:59:00,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 132 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:00,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:00,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 163 [2024-10-11 23:59:00,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:00,983 INFO L124 PetriNetUnfolderBase]: 886/2493 cut-off events. [2024-10-11 23:59:00,984 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 23:59:00,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 2493 events. 886/2493 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 19341 event pairs, 0 based on Foata normal form. 21/2215 useless extension candidates. Maximal degree in co-relation 4179. Up to 1624 conditions per place. [2024-10-11 23:59:00,997 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 109 selfloop transitions, 3 changer transitions 0/173 dead transitions. [2024-10-11 23:59:00,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 173 transitions, 599 flow [2024-10-11 23:59:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:59:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:59:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2024-10-11 23:59:01,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5598159509202454 [2024-10-11 23:59:01,001 INFO L175 Difference]: Start difference. First operand has 133 places, 132 transitions, 293 flow. Second operand 4 states and 365 transitions. [2024-10-11 23:59:01,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 173 transitions, 599 flow [2024-10-11 23:59:01,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 173 transitions, 591 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:59:01,009 INFO L231 Difference]: Finished difference. Result has 133 places, 130 transitions, 291 flow [2024-10-11 23:59:01,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=133, PETRI_TRANSITIONS=130} [2024-10-11 23:59:01,012 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 4 predicate places. [2024-10-11 23:59:01,012 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 130 transitions, 291 flow [2024-10-11 23:59:01,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:01,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:01,013 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:01,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 23:59:01,013 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-11 23:59:01,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1336198142, now seen corresponding path program 1 times [2024-10-11 23:59:01,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:01,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666100576] [2024-10-11 23:59:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:01,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:01,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666100576] [2024-10-11 23:59:01,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666100576] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363015116] [2024-10-11 23:59:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:01,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:01,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:01,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:01,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:59:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:01,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:59:01,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:01,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:59:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:01,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363015116] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:59:01,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:59:01,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 23:59:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121299520] [2024-10-11 23:59:01,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:59:01,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:59:01,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:01,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:59:01,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:59:01,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-10-11 23:59:01,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 130 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 65.375) internal successors, (523), 8 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:01,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:01,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-10-11 23:59:01,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:01,694 INFO L124 PetriNetUnfolderBase]: 908/2786 cut-off events. [2024-10-11 23:59:01,696 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-10-11 23:59:01,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 2786 events. 908/2786 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22390 event pairs, 760 based on Foata normal form. 2/2420 useless extension candidates. Maximal degree in co-relation 4511. Up to 1686 conditions per place. [2024-10-11 23:59:01,713 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2024-10-11 23:59:01,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 133 transitions, 445 flow [2024-10-11 23:59:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:59:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:59:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2024-10-11 23:59:01,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4566170026292726 [2024-10-11 23:59:01,716 INFO L175 Difference]: Start difference. First operand has 133 places, 130 transitions, 291 flow. Second operand 7 states and 521 transitions. [2024-10-11 23:59:01,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 133 transitions, 445 flow [2024-10-11 23:59:01,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 133 transitions, 439 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:59:01,719 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 322 flow [2024-10-11 23:59:01,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2024-10-11 23:59:01,720 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 9 predicate places. [2024-10-11 23:59:01,720 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 322 flow [2024-10-11 23:59:01,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.375) internal successors, (523), 8 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:01,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:01,721 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:01,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:59:01,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:01,926 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-11 23:59:01,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:01,927 INFO L85 PathProgramCache]: Analyzing trace with hash -580175522, now seen corresponding path program 2 times [2024-10-11 23:59:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:01,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308529388] [2024-10-11 23:59:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:01,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:02,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:02,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308529388] [2024-10-11 23:59:02,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308529388] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:02,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025525755] [2024-10-11 23:59:02,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:59:02,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:02,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:02,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:02,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:59:02,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:59:02,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:59:02,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:59:02,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:02,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:59:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:02,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025525755] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:59:02,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:59:02,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-11 23:59:02,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829974568] [2024-10-11 23:59:02,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:59:02,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 23:59:02,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 23:59:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-11 23:59:02,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-10-11 23:59:02,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 322 flow. Second operand has 16 states, 16 states have (on average 65.1875) internal successors, (1043), 16 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:02,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:02,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-10-11 23:59:02,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:02,816 INFO L124 PetriNetUnfolderBase]: 908/2798 cut-off events. [2024-10-11 23:59:02,816 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-10-11 23:59:02,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4574 conditions, 2798 events. 908/2798 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22439 event pairs, 760 based on Foata normal form. 4/2434 useless extension candidates. Maximal degree in co-relation 4491. Up to 1686 conditions per place. [2024-10-11 23:59:02,830 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2024-10-11 23:59:02,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 141 transitions, 536 flow [2024-10-11 23:59:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 23:59:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 23:59:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1043 transitions. [2024-10-11 23:59:02,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4265848670756646 [2024-10-11 23:59:02,834 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 322 flow. Second operand 15 states and 1043 transitions. [2024-10-11 23:59:02,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 141 transitions, 536 flow [2024-10-11 23:59:02,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 141 transitions, 514 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-11 23:59:02,838 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 405 flow [2024-10-11 23:59:02,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=405, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2024-10-11 23:59:02,838 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 24 predicate places. [2024-10-11 23:59:02,839 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 405 flow [2024-10-11 23:59:02,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 65.1875) internal successors, (1043), 16 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:02,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:02,839 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:02,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 23:59:03,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:03,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-11 23:59:03,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash -167932898, now seen corresponding path program 3 times [2024-10-11 23:59:03,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:03,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129621759] [2024-10-11 23:59:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:03,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:03,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129621759] [2024-10-11 23:59:03,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129621759] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976591405] [2024-10-11 23:59:03,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 23:59:03,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:03,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:03,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:03,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:59:03,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-10-11 23:59:03,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:59:03,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 23:59:03,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:03,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:59:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:59:03,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976591405] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:59:03,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:59:03,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-10-11 23:59:03,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212505255] [2024-10-11 23:59:03,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:59:03,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 23:59:03,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:03,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 23:59:03,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-10-11 23:59:03,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 163 [2024-10-11 23:59:03,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 405 flow. Second operand has 21 states, 21 states have (on average 65.19047619047619) internal successors, (1369), 21 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:03,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:03,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 163 [2024-10-11 23:59:03,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:04,359 INFO L124 PetriNetUnfolderBase]: 908/2807 cut-off events. [2024-10-11 23:59:04,359 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-10-11 23:59:04,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 2807 events. 908/2807 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22398 event pairs, 760 based on Foata normal form. 3/2442 useless extension candidates. Maximal degree in co-relation 4491. Up to 1686 conditions per place. [2024-10-11 23:59:04,373 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 64 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-10-11 23:59:04,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 147 transitions, 629 flow [2024-10-11 23:59:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 23:59:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 23:59:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1432 transitions. [2024-10-11 23:59:04,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41834647969617295 [2024-10-11 23:59:04,381 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 405 flow. Second operand 21 states and 1432 transitions. [2024-10-11 23:59:04,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 147 transitions, 629 flow [2024-10-11 23:59:04,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 611 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-11 23:59:04,388 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 498 flow [2024-10-11 23:59:04,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=498, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2024-10-11 23:59:04,389 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 43 predicate places. [2024-10-11 23:59:04,389 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 498 flow [2024-10-11 23:59:04,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 65.19047619047619) internal successors, (1369), 21 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:04,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:04,392 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:04,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 23:59:04,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:04,593 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-11 23:59:04,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:04,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1814135081, now seen corresponding path program 4 times [2024-10-11 23:59:04,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:04,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990638212] [2024-10-11 23:59:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:04,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:59:04,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:59:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:59:04,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:59:04,673 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:59:04,674 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-10-11 23:59:04,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2024-10-11 23:59:04,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2024-10-11 23:59:04,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2024-10-11 23:59:04,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2024-10-11 23:59:04,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2024-10-11 23:59:04,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2024-10-11 23:59:04,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2024-10-11 23:59:04,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2024-10-11 23:59:04,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2024-10-11 23:59:04,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2024-10-11 23:59:04,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2024-10-11 23:59:04,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2024-10-11 23:59:04,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2024-10-11 23:59:04,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2024-10-11 23:59:04,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2024-10-11 23:59:04,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2024-10-11 23:59:04,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2024-10-11 23:59:04,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2024-10-11 23:59:04,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2024-10-11 23:59:04,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2024-10-11 23:59:04,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2024-10-11 23:59:04,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2024-10-11 23:59:04,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2024-10-11 23:59:04,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2024-10-11 23:59:04,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2024-10-11 23:59:04,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2024-10-11 23:59:04,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2024-10-11 23:59:04,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2024-10-11 23:59:04,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 23:59:04,682 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2024-10-11 23:59:04,684 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:59:04,684 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 23:59:04,723 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 23:59:04,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 215 transitions, 446 flow [2024-10-11 23:59:04,760 INFO L124 PetriNetUnfolderBase]: 97/420 cut-off events. [2024-10-11 23:59:04,760 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 23:59:04,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 420 events. 97/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2402 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 258. Up to 12 conditions per place. [2024-10-11 23:59:04,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 215 transitions, 446 flow [2024-10-11 23:59:04,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 215 transitions, 446 flow [2024-10-11 23:59:04,770 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:59:04,770 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;@be8ce19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:59:04,771 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-10-11 23:59:04,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:59:04,772 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-11 23:59:04,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:59:04,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:04,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 23:59:04,773 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-11 23:59:04,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:04,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1026196, now seen corresponding path program 1 times [2024-10-11 23:59:04,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:04,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171249022] [2024-10-11 23:59:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:04,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:04,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:04,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171249022] [2024-10-11 23:59:04,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171249022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:04,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:04,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:59:04,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189483957] [2024-10-11 23:59:04,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:04,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:59:04,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:59:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:59:04,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-10-11 23:59:04,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 215 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:04,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:04,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-10-11 23:59:04,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:11,210 INFO L124 PetriNetUnfolderBase]: 38431/83197 cut-off events. [2024-10-11 23:59:11,211 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-10-11 23:59:11,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139040 conditions, 83197 events. 38431/83197 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 959923 event pairs, 33202 based on Foata normal form. 16614/88098 useless extension candidates. Maximal degree in co-relation 103580. Up to 55727 conditions per place. [2024-10-11 23:59:11,768 INFO L140 encePairwiseOnDemand]: 170/215 looper letters, 87 selfloop transitions, 4 changer transitions 0/174 dead transitions. [2024-10-11 23:59:11,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 174 transitions, 546 flow [2024-10-11 23:59:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:59:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:59:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 464 transitions. [2024-10-11 23:59:11,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395348837209303 [2024-10-11 23:59:11,771 INFO L175 Difference]: Start difference. First operand has 170 places, 215 transitions, 446 flow. Second operand 4 states and 464 transitions. [2024-10-11 23:59:11,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 174 transitions, 546 flow [2024-10-11 23:59:11,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 174 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:59:11,776 INFO L231 Difference]: Finished difference. Result has 172 places, 174 transitions, 372 flow [2024-10-11 23:59:11,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=172, PETRI_TRANSITIONS=174} [2024-10-11 23:59:11,777 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2024-10-11 23:59:11,778 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 174 transitions, 372 flow [2024-10-11 23:59:11,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:11,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:11,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 23:59:11,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 23:59:11,779 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-11 23:59:11,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash 31813177, now seen corresponding path program 1 times [2024-10-11 23:59:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022377878] [2024-10-11 23:59:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:59:11,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022377878] [2024-10-11 23:59:11,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022377878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:11,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:11,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:59:11,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113735054] [2024-10-11 23:59:11,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:11,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:59:11,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:11,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:59:11,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:59:11,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-10-11 23:59:11,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 174 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:11,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:11,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-10-11 23:59:11,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:17,187 INFO L124 PetriNetUnfolderBase]: 38431/83200 cut-off events. [2024-10-11 23:59:17,187 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-10-11 23:59:17,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139052 conditions, 83200 events. 38431/83200 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 2461. Compared 959614 event pairs, 33202 based on Foata normal form. 1/71489 useless extension candidates. Maximal degree in co-relation 139025. Up to 55731 conditions per place. [2024-10-11 23:59:17,984 INFO L140 encePairwiseOnDemand]: 210/215 looper letters, 90 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2024-10-11 23:59:17,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 176 transitions, 566 flow [2024-10-11 23:59:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:59:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:59:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2024-10-11 23:59:17,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4965116279069767 [2024-10-11 23:59:17,986 INFO L175 Difference]: Start difference. First operand has 172 places, 174 transitions, 372 flow. Second operand 4 states and 427 transitions. [2024-10-11 23:59:17,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 176 transitions, 566 flow [2024-10-11 23:59:17,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 176 transitions, 554 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:59:17,990 INFO L231 Difference]: Finished difference. Result has 174 places, 176 transitions, 386 flow [2024-10-11 23:59:17,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2024-10-11 23:59:17,991 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 4 predicate places. [2024-10-11 23:59:17,991 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 386 flow [2024-10-11 23:59:17,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:17,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:17,992 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-11 23:59:17,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:59:17,992 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-11 23:59:17,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:17,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1440377335, now seen corresponding path program 1 times [2024-10-11 23:59:17,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:17,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090567314] [2024-10-11 23:59:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:17,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:59:18,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:18,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090567314] [2024-10-11 23:59:18,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090567314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:18,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:18,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:59:18,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507050109] [2024-10-11 23:59:18,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:18,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:59:18,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:18,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:59:18,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:59:18,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-10-11 23:59:18,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:18,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:18,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-10-11 23:59:18,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:23,375 INFO L124 PetriNetUnfolderBase]: 38431/83199 cut-off events. [2024-10-11 23:59:23,376 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-10-11 23:59:23,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139054 conditions, 83199 events. 38431/83199 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 2461. Compared 959593 event pairs, 33202 based on Foata normal form. 0/71487 useless extension candidates. Maximal degree in co-relation 139035. Up to 55730 conditions per place. [2024-10-11 23:59:23,847 INFO L140 encePairwiseOnDemand]: 212/215 looper letters, 88 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2024-10-11 23:59:23,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 175 transitions, 566 flow [2024-10-11 23:59:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:59:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:59:23,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2024-10-11 23:59:23,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5271317829457365 [2024-10-11 23:59:23,849 INFO L175 Difference]: Start difference. First operand has 174 places, 176 transitions, 386 flow. Second operand 3 states and 340 transitions. [2024-10-11 23:59:23,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 175 transitions, 566 flow [2024-10-11 23:59:23,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 175 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:59:23,853 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 388 flow [2024-10-11 23:59:23,853 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2024-10-11 23:59:23,854 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 4 predicate places. [2024-10-11 23:59:23,854 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 388 flow [2024-10-11 23:59:23,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:23,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:23,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:23,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 23:59:23,854 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-11 23:59:23,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1223860542, now seen corresponding path program 1 times [2024-10-11 23:59:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:23,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678578356] [2024-10-11 23:59:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:23,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:59:23,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:23,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678578356] [2024-10-11 23:59:23,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678578356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:59:23,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:59:23,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:59:23,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144566091] [2024-10-11 23:59:23,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:59:23,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:59:23,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:23,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:59:23,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:59:23,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 215 [2024-10-11 23:59:23,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:23,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:23,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 215 [2024-10-11 23:59:23,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:29,619 INFO L124 PetriNetUnfolderBase]: 40161/83753 cut-off events. [2024-10-11 23:59:29,619 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-10-11 23:59:29,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142445 conditions, 83753 events. 40161/83753 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 2337. Compared 937092 event pairs, 17300 based on Foata normal form. 21/72431 useless extension candidates. Maximal degree in co-relation 142421. Up to 58500 conditions per place. [2024-10-11 23:59:30,026 INFO L140 encePairwiseOnDemand]: 209/215 looper letters, 137 selfloop transitions, 3 changer transitions 0/220 dead transitions. [2024-10-11 23:59:30,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 220 transitions, 758 flow [2024-10-11 23:59:30,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:59:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:59:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-10-11 23:59:30,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5453488372093023 [2024-10-11 23:59:30,028 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 388 flow. Second operand 4 states and 469 transitions. [2024-10-11 23:59:30,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 220 transitions, 758 flow [2024-10-11 23:59:30,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 220 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:59:30,032 INFO L231 Difference]: Finished difference. Result has 177 places, 177 transitions, 404 flow [2024-10-11 23:59:30,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=177, PETRI_TRANSITIONS=177} [2024-10-11 23:59:30,032 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 7 predicate places. [2024-10-11 23:59:30,033 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 177 transitions, 404 flow [2024-10-11 23:59:30,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:30,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:30,033 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:30,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 23:59:30,033 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-11 23:59:30,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:30,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1664166783, now seen corresponding path program 1 times [2024-10-11 23:59:30,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:30,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134868605] [2024-10-11 23:59:30,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:30,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:59:30,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:30,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134868605] [2024-10-11 23:59:30,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134868605] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:30,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542308901] [2024-10-11 23:59:30,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:30,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:30,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:30,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:30,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:59:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:30,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:59:30,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:59:30,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:59:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:59:30,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542308901] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:59:30,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:59:30,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 23:59:30,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006392230] [2024-10-11 23:59:30,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:59:30,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:59:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:30,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:59:30,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:59:30,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-10-11 23:59:30,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 177 transitions, 404 flow. Second operand has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:30,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:30,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-10-11 23:59:30,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:59:36,340 INFO L124 PetriNetUnfolderBase]: 38330/84251 cut-off events. [2024-10-11 23:59:36,340 INFO L125 PetriNetUnfolderBase]: For 1083/1925 co-relation queries the response was YES. [2024-10-11 23:59:36,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140918 conditions, 84251 events. 38330/84251 cut-off events. For 1083/1925 co-relation queries the response was YES. Maximal size of possible extension queue 2445. Compared 980890 event pairs, 33200 based on Foata normal form. 19/72869 useless extension candidates. Maximal degree in co-relation 140884. Up to 55567 conditions per place. [2024-10-11 23:59:36,790 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 89 selfloop transitions, 7 changer transitions 0/180 dead transitions. [2024-10-11 23:59:36,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 180 transitions, 608 flow [2024-10-11 23:59:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:59:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:59:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 678 transitions. [2024-10-11 23:59:36,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4504983388704319 [2024-10-11 23:59:36,793 INFO L175 Difference]: Start difference. First operand has 177 places, 177 transitions, 404 flow. Second operand 7 states and 678 transitions. [2024-10-11 23:59:36,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 180 transitions, 608 flow [2024-10-11 23:59:36,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 180 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:59:36,800 INFO L231 Difference]: Finished difference. Result has 184 places, 180 transitions, 439 flow [2024-10-11 23:59:36,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=184, PETRI_TRANSITIONS=180} [2024-10-11 23:59:36,801 INFO L277 CegarLoopForPetriNet]: 170 programPoint places, 14 predicate places. [2024-10-11 23:59:36,801 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 180 transitions, 439 flow [2024-10-11 23:59:36,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:36,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:59:36,802 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:59:36,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 23:59:37,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 23:59:37,003 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-11 23:59:37,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:59:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash -741965183, now seen corresponding path program 2 times [2024-10-11 23:59:37,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:59:37,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010178249] [2024-10-11 23:59:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:59:37,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:59:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:59:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:59:37,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:59:37,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010178249] [2024-10-11 23:59:37,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010178249] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:59:37,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615765865] [2024-10-11 23:59:37,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:59:37,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:59:37,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:59:37,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:59:37,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:59:37,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:59:37,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:59:37,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 23:59:37,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:59:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:59:37,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:59:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:59:37,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615765865] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:59:37,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:59:37,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-11 23:59:37,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115543911] [2024-10-11 23:59:37,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:59:37,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 23:59:37,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:59:37,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 23:59:37,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-10-11 23:59:37,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 215 [2024-10-11 23:59:37,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 180 transitions, 439 flow. Second operand has 16 states, 16 states have (on average 84.25) internal successors, (1348), 16 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:59:37,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:59:37,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 215 [2024-10-11 23:59:37,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand