/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/bigshot_s2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 23:14:43,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 23:14:43,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 23:14:43,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 23:14:43,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 23:14:43,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 23:14:43,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 23:14:43,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 23:14:43,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 23:14:43,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 23:14:43,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 23:14:43,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 23:14:43,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 23:14:43,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 23:14:43,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 23:14:43,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 23:14:43,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 23:14:43,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 23:14:43,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 23:14:43,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 23:14:43,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 23:14:43,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 23:14:43,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 23:14:43,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 23:14:43,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 23:14:43,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 23:14:43,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 23:14:43,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 23:14:43,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 23:14:43,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 23:14:43,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 23:14:43,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 23:14:43,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 23:14:43,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 23:14:43,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 23:14:43,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 23:14:43,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 23:14:43,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 23:14:43,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 23:14:43,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 23:14:43,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 23:14:43,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 23:14:43,328 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 23:14:43,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 23:14:43,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 23:14:43,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 23:14:43,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 23:14:43,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 23:14:43,330 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 23:14:43,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 23:14:43,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 23:14:43,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 23:14:43,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 23:14:43,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 23:14:43,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 23:14:43,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 23:14:43,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 23:14:43,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 23:14:43,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 23:14:43,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 23:14:43,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 23:14:43,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 23:14:43,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 23:14:43,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 23:14:43,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 23:14:43,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:14:43,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 23:14:43,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 23:14:43,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 23:14:43,333 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 23:14:43,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 23:14:43,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 23:14:43,333 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 23:14:43,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-11 23:14:43,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 23:14:43,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 23:14:43,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 23:14:43,624 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 23:14:43,624 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 23:14:43,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2022-12-11 23:14:44,572 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 23:14:44,847 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 23:14:44,847 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2022-12-11 23:14:44,889 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084900d6a/b03c4d2736f4424f9d178390d962a026/FLAG07dce17a7 [2022-12-11 23:14:44,900 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/084900d6a/b03c4d2736f4424f9d178390d962a026 [2022-12-11 23:14:44,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 23:14:44,903 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 23:14:44,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 23:14:44,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 23:14:44,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 23:14:44,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:14:44" (1/1) ... [2022-12-11 23:14:44,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20be0928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:44, skipping insertion in model container [2022-12-11 23:14:44,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:14:44" (1/1) ... [2022-12-11 23:14:44,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 23:14:44,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 23:14:45,427 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2022-12-11 23:14:45,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:14:45,451 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 23:14:45,473 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2022-12-11 23:14:45,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:14:45,521 INFO L208 MainTranslator]: Completed translation [2022-12-11 23:14:45,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45 WrapperNode [2022-12-11 23:14:45,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 23:14:45,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 23:14:45,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 23:14:45,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 23:14:45,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,597 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-11 23:14:45,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 23:14:45,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 23:14:45,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 23:14:45,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 23:14:45,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 23:14:45,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 23:14:45,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 23:14:45,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 23:14:45,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (1/1) ... [2022-12-11 23:14:45,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:14:45,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:14:45,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 23:14:45,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 23:14:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 23:14:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 23:14:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-11 23:14:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 23:14:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 23:14:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 23:14:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 23:14:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 23:14:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 23:14:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 23:14:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 23:14:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 23:14:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 23:14:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 23:14:45,752 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 23:14:45,836 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 23:14:45,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 23:14:45,954 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 23:14:45,958 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 23:14:45,958 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-11 23:14:45,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:14:45 BoogieIcfgContainer [2022-12-11 23:14:45,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 23:14:45,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 23:14:45,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 23:14:45,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 23:14:45,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 11:14:44" (1/3) ... [2022-12-11 23:14:45,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfd3a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:14:45, skipping insertion in model container [2022-12-11 23:14:45,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:14:45" (2/3) ... [2022-12-11 23:14:45,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfd3a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:14:45, skipping insertion in model container [2022-12-11 23:14:45,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:14:45" (3/3) ... [2022-12-11 23:14:45,965 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2022-12-11 23:14:45,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 23:14:45,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 23:14:45,977 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 23:14:46,040 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 23:14:46,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 82 transitions, 180 flow [2022-12-11 23:14:46,086 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2022-12-11 23:14:46,086 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 23:14:46,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 4/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2022-12-11 23:14:46,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 82 transitions, 180 flow [2022-12-11 23:14:46,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 69 transitions, 150 flow [2022-12-11 23:14:46,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:14:46,100 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3fd2841d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:14:46,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 23:14:46,112 INFO L130 PetriNetUnfolder]: 3/68 cut-off events. [2022-12-11 23:14:46,112 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 23:14:46,113 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:14:46,113 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:14:46,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:14:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:14:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash 803810916, now seen corresponding path program 1 times [2022-12-11 23:14:46,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:14:46,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839121752] [2022-12-11 23:14:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:14:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:14:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:14:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:14:46,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:14:46,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839121752] [2022-12-11 23:14:46,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839121752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:14:46,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:14:46,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 23:14:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102032695] [2022-12-11 23:14:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:14:46,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 23:14:46,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:14:46,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 23:14:46,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 23:14:46,524 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-12-11 23:14:46,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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) [2022-12-11 23:14:46,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:14:46,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-12-11 23:14:46,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:14:46,582 INFO L130 PetriNetUnfolder]: 1/67 cut-off events. [2022-12-11 23:14:46,582 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-11 23:14:46,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 67 events. 1/67 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 1/67 useless extension candidates. Maximal degree in co-relation 40. Up to 7 conditions per place. [2022-12-11 23:14:46,583 INFO L137 encePairwiseOnDemand]: 77/82 looper letters, 8 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2022-12-11 23:14:46,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 67 transitions, 168 flow [2022-12-11 23:14:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 23:14:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 23:14:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 348 transitions. [2022-12-11 23:14:46,594 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.848780487804878 [2022-12-11 23:14:46,596 INFO L295 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2022-12-11 23:14:46,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 67 transitions, 168 flow [2022-12-11 23:14:46,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 67 transitions, 168 flow [2022-12-11 23:14:46,597 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 168 flow [2022-12-11 23:14:46,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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) [2022-12-11 23:14:46,598 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:14:46,598 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:14:46,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 23:14:46,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:14:46,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:14:46,599 INFO L85 PathProgramCache]: Analyzing trace with hash 821493880, now seen corresponding path program 1 times [2022-12-11 23:14:46,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:14:46,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695122128] [2022-12-11 23:14:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:14:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:14:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:14:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:14:47,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:14:47,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695122128] [2022-12-11 23:14:47,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695122128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:14:47,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:14:47,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-11 23:14:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648120299] [2022-12-11 23:14:47,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:14:47,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-11 23:14:47,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:14:47,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-11 23:14:47,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-11 23:14:47,239 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 82 [2022-12-11 23:14:47,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 168 flow. Second operand has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 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) [2022-12-11 23:14:47,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:14:47,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 82 [2022-12-11 23:14:47,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:14:47,454 INFO L130 PetriNetUnfolder]: 16/112 cut-off events. [2022-12-11 23:14:47,454 INFO L131 PetriNetUnfolder]: For 18/19 co-relation queries the response was YES. [2022-12-11 23:14:47,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 112 events. 16/112 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 1 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 126. Up to 20 conditions per place. [2022-12-11 23:14:47,457 INFO L137 encePairwiseOnDemand]: 72/82 looper letters, 36 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2022-12-11 23:14:47,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 282 flow [2022-12-11 23:14:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 23:14:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 23:14:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 447 transitions. [2022-12-11 23:14:47,464 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5451219512195122 [2022-12-11 23:14:47,466 INFO L295 CegarLoopForPetriNet]: 73 programPoint places, 13 predicate places. [2022-12-11 23:14:47,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 78 transitions, 282 flow [2022-12-11 23:14:47,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 78 transitions, 282 flow [2022-12-11 23:14:47,473 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 282 flow [2022-12-11 23:14:47,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 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) [2022-12-11 23:14:47,474 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:14:47,474 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:14:47,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 23:14:47,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:14:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:14:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash -807825616, now seen corresponding path program 1 times [2022-12-11 23:14:47,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:14:47,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91172659] [2022-12-11 23:14:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:14:47,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:14:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:14:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:14:47,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:14:48,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91172659] [2022-12-11 23:14:48,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91172659] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:14:48,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687144193] [2022-12-11 23:14:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:14:48,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:14:48,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:14:48,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:14:48,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 23:14:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:14:48,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-11 23:14:48,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:14:48,251 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 23:14:48,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-11 23:14:48,297 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-11 23:14:48,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-11 23:14:48,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 23:14:48,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 23:14:48,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 23:14:48,615 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-11 23:14:48,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-12-11 23:14:48,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 23:14:48,711 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 23:14:48,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 23:14:48,767 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 23:14:48,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-11 23:14:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:14:48,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:14:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:14:49,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687144193] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:14:49,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:14:49,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 17] total 43 [2022-12-11 23:14:49,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635694962] [2022-12-11 23:14:49,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:14:49,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-11 23:14:49,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:14:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-11 23:14:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1653, Unknown=0, NotChecked=0, Total=1806 [2022-12-11 23:14:49,468 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 82 [2022-12-11 23:14:49,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 282 flow. Second operand has 43 states, 43 states have (on average 30.88372093023256) internal successors, (1328), 43 states have internal predecessors, (1328), 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) [2022-12-11 23:14:49,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:14:49,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 82 [2022-12-11 23:14:49,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:14:51,148 INFO L130 PetriNetUnfolder]: 36/193 cut-off events. [2022-12-11 23:14:51,148 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-11 23:14:51,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 193 events. 36/193 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 504 event pairs, 2 based on Foata normal form. 2/189 useless extension candidates. Maximal degree in co-relation 376. Up to 69 conditions per place. [2022-12-11 23:14:51,149 INFO L137 encePairwiseOnDemand]: 64/82 looper letters, 56 selfloop transitions, 19 changer transitions 14/112 dead transitions. [2022-12-11 23:14:51,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 112 transitions, 594 flow [2022-12-11 23:14:51,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-11 23:14:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-11 23:14:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 790 transitions. [2022-12-11 23:14:51,165 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3853658536585366 [2022-12-11 23:14:51,165 INFO L295 CegarLoopForPetriNet]: 73 programPoint places, 37 predicate places. [2022-12-11 23:14:51,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 112 transitions, 594 flow [2022-12-11 23:14:51,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 98 transitions, 512 flow [2022-12-11 23:14:51,167 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 98 transitions, 512 flow [2022-12-11 23:14:51,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 30.88372093023256) internal successors, (1328), 43 states have internal predecessors, (1328), 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) [2022-12-11 23:14:51,167 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:14:51,168 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:14:51,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 23:14:51,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:14:51,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:14:51,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:14:51,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1413012714, now seen corresponding path program 2 times [2022-12-11 23:14:51,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:14:51,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783271256] [2022-12-11 23:14:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:14:51,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:14:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:14:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:14:52,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:14:52,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783271256] [2022-12-11 23:14:52,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783271256] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:14:52,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994066726] [2022-12-11 23:14:52,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 23:14:52,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:14:52,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:14:52,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:14:52,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 23:14:52,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 23:14:52,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:14:52,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-11 23:14:52,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:14:52,205 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 23:14:52,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-11 23:14:52,260 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 23:14:52,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-11 23:14:52,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 23:14:52,393 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-11 23:14:52,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-11 23:14:52,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 23:14:52,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 23:14:52,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 23:14:52,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 23:14:52,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 23:14:52,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-11 23:14:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:14:52,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:14:53,221 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_105 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_105) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-12-11 23:14:53,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 230 [2022-12-11 23:14:53,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 105 [2022-12-11 23:14:53,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 202 [2022-12-11 23:14:53,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 198 [2022-12-11 23:15:01,793 WARN L233 SmtUtils]: Spent 7.68s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 23:15:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2022-12-11 23:15:02,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994066726] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:15:02,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:15:02,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 48 [2022-12-11 23:15:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656287888] [2022-12-11 23:15:02,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:15:02,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-11 23:15:02,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:15:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-11 23:15:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1945, Unknown=36, NotChecked=90, Total=2256 [2022-12-11 23:15:02,010 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 82 [2022-12-11 23:15:02,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 98 transitions, 512 flow. Second operand has 48 states, 48 states have (on average 35.958333333333336) internal successors, (1726), 48 states have internal predecessors, (1726), 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) [2022-12-11 23:15:02,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:15:02,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 82 [2022-12-11 23:15:02,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:15:04,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-11 23:15:07,484 INFO L130 PetriNetUnfolder]: 35/165 cut-off events. [2022-12-11 23:15:07,484 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-12-11 23:15:07,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 165 events. 35/165 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 316 event pairs, 2 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 432. Up to 66 conditions per place. [2022-12-11 23:15:07,486 INFO L137 encePairwiseOnDemand]: 67/82 looper letters, 60 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2022-12-11 23:15:07,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 108 transitions, 736 flow [2022-12-11 23:15:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-11 23:15:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-11 23:15:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 738 transitions. [2022-12-11 23:15:07,488 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45 [2022-12-11 23:15:07,489 INFO L295 CegarLoopForPetriNet]: 73 programPoint places, 50 predicate places. [2022-12-11 23:15:07,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 108 transitions, 736 flow [2022-12-11 23:15:07,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 108 transitions, 736 flow [2022-12-11 23:15:07,490 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 108 transitions, 736 flow [2022-12-11 23:15:07,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 35.958333333333336) internal successors, (1726), 48 states have internal predecessors, (1726), 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) [2022-12-11 23:15:07,491 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:15:07,491 INFO L214 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:15:07,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-11 23:15:07,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-11 23:15:07,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 23:15:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:15:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1548081298, now seen corresponding path program 3 times [2022-12-11 23:15:07,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:15:07,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136148898] [2022-12-11 23:15:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:15:07,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:15:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:15:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:15:08,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:15:08,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136148898] [2022-12-11 23:15:08,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136148898] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 23:15:08,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950679121] [2022-12-11 23:15:08,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 23:15:08,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:15:08,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:15:08,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:15:08,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 23:15:08,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-11 23:15:08,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:15:08,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-11 23:15:08,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:15:08,610 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-11 23:15:08,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-11 23:15:08,657 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-11 23:15:08,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-11 23:15:08,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 23:15:08,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-11 23:15:09,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 23:15:09,019 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-11 23:15:09,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-12-11 23:15:09,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 23:15:09,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 23:15:09,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 23:15:09,143 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 23:15:09,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 23:15:09,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 23:15:09,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 23:15:09,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 23:15:09,254 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 23:15:09,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 23:15:09,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 23:15:09,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 23:15:09,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 23:15:09,422 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 23:15:09,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 23:15:09,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 23:15:09,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 23:15:09,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 23:15:09,530 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 23:15:09,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 23:15:09,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-11 23:15:09,607 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 23:15:09,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-12-11 23:15:09,678 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-11 23:15:09,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-11 23:15:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:15:09,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:17:42,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:17:42,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 654 treesize of output 644 [2022-12-11 23:17:42,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3066 treesize of output 3042 [2022-12-11 23:17:42,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4048 treesize of output 4040 [2022-12-11 23:17:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 26 proven. 15 refuted. 10 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-11 23:17:44,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950679121] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:17:44,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 23:17:44,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 24] total 62 [2022-12-11 23:17:44,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24531812] [2022-12-11 23:17:44,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 23:17:44,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-12-11 23:17:44,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:17:44,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-12-11 23:17:44,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=3413, Unknown=71, NotChecked=0, Total=3782 [2022-12-11 23:17:44,620 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 82 [2022-12-11 23:17:44,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 108 transitions, 736 flow. Second operand has 62 states, 62 states have (on average 29.887096774193548) internal successors, (1853), 62 states have internal predecessors, (1853), 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) [2022-12-11 23:17:44,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:17:44,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 82 [2022-12-11 23:17:44,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:17:46,922 INFO L130 PetriNetUnfolder]: 39/175 cut-off events. [2022-12-11 23:17:46,922 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2022-12-11 23:17:46,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 175 events. 39/175 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 346 event pairs, 2 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 592. Up to 78 conditions per place. [2022-12-11 23:17:46,923 INFO L137 encePairwiseOnDemand]: 62/82 looper letters, 0 selfloop transitions, 0 changer transitions 112/112 dead transitions. [2022-12-11 23:17:46,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 112 transitions, 960 flow [2022-12-11 23:17:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-11 23:17:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-11 23:17:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 786 transitions. [2022-12-11 23:17:46,925 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36866791744840527 [2022-12-11 23:17:46,926 INFO L295 CegarLoopForPetriNet]: 73 programPoint places, 73 predicate places. [2022-12-11 23:17:46,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 112 transitions, 960 flow [2022-12-11 23:17:46,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-11 23:17:46,926 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-11 23:17:46,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 29.887096774193548) internal successors, (1853), 62 states have internal predecessors, (1853), 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) [2022-12-11 23:17:46,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 23:17:46,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 23:17:46,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 23:17:46,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 23:17:47,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:17:47,130 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-12-11 23:17:47,133 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 23:17:47,133 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 23:17:47,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 11:17:47 BasicIcfg [2022-12-11 23:17:47,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 23:17:47,136 INFO L158 Benchmark]: Toolchain (without parser) took 182232.94ms. Allocated memory was 199.2MB in the beginning and 393.2MB in the end (delta: 194.0MB). Free memory was 173.2MB in the beginning and 261.7MB in the end (delta: -88.5MB). Peak memory consumption was 106.9MB. Max. memory is 8.0GB. [2022-12-11 23:17:47,136 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory was 175.7MB in the beginning and 175.5MB in the end (delta: 149.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 23:17:47,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 616.93ms. Allocated memory is still 199.2MB. Free memory was 173.0MB in the beginning and 141.0MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-12-11 23:17:47,136 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.03ms. Allocated memory is still 199.2MB. Free memory was 140.5MB in the beginning and 138.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 23:17:47,137 INFO L158 Benchmark]: Boogie Preprocessor took 36.97ms. Allocated memory is still 199.2MB. Free memory was 138.4MB in the beginning and 136.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 23:17:47,137 INFO L158 Benchmark]: RCFGBuilder took 324.28ms. Allocated memory is still 199.2MB. Free memory was 136.8MB in the beginning and 122.7MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-11 23:17:47,137 INFO L158 Benchmark]: TraceAbstraction took 181174.29ms. Allocated memory was 199.2MB in the beginning and 393.2MB in the end (delta: 194.0MB). Free memory was 121.1MB in the beginning and 261.7MB in the end (delta: -140.6MB). Peak memory consumption was 54.4MB. Max. memory is 8.0GB. [2022-12-11 23:17:47,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory was 175.7MB in the beginning and 175.5MB in the end (delta: 149.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 616.93ms. Allocated memory is still 199.2MB. Free memory was 173.0MB in the beginning and 141.0MB in the end (delta: 32.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 75.03ms. Allocated memory is still 199.2MB. Free memory was 140.5MB in the beginning and 138.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.97ms. Allocated memory is still 199.2MB. Free memory was 138.4MB in the beginning and 136.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 324.28ms. Allocated memory is still 199.2MB. Free memory was 136.8MB in the beginning and 122.7MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 181174.29ms. Allocated memory was 199.2MB in the beginning and 393.2MB in the end (delta: 194.0MB). Free memory was 121.1MB in the beginning and 261.7MB in the end (delta: -140.6MB). Peak memory consumption was 54.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 181.1s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 mSolverCounterUnknown, 1731 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1731 mSDsluCounter, 969 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 62 IncrementalHoareTripleChecker+Unchecked, 897 mSDsCounter, 371 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3809 IncrementalHoareTripleChecker+Invalid, 4265 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 371 mSolverCounterUnsat, 72 mSDtfsCounter, 3809 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 612 GetRequests, 379 SyntacticMatches, 12 SemanticMatches, 221 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 3561 ImplicationChecksByTransitivity, 167.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=736occurred in iteration=4, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1042 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 169.9s InterpolantComputationTime, 590 NumberOfCodeBlocks, 590 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 814 ConstructedInterpolants, 139 QuantifiedInterpolants, 13174 SizeOfPredicates, 46 NumberOfNonLiveVariables, 690 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 48/282 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 23:17:47,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...