/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 23:00:10,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 23:00:10,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 23:00:10,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 23:00:10,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 23:00:10,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 23:00:10,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 23:00:10,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 23:00:10,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 23:00:10,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 23:00:10,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 23:00:10,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 23:00:10,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 23:00:10,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 23:00:10,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 23:00:10,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 23:00:10,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 23:00:10,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 23:00:10,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 23:00:10,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 23:00:10,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 23:00:10,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 23:00:10,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 23:00:10,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 23:00:10,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 23:00:10,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 23:00:10,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 23:00:10,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 23:00:10,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 23:00:10,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 23:00:10,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 23:00:10,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 23:00:10,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 23:00:10,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 23:00:10,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 23:00:10,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 23:00:10,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 23:00:10,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 23:00:10,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 23:00:10,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 23:00:10,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 23:00:10,294 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 23:00:10,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 23:00:10,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 23:00:10,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 23:00:10,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 23:00:10,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 23:00:10,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 23:00:10,326 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 23:00:10,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 23:00:10,326 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 23:00:10,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 23:00:10,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 23:00:10,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 23:00:10,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 23:00:10,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 23:00:10,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 23:00:10,328 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 23:00:10,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 23:00:10,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 23:00:10,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 23:00:10,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 23:00:10,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 23:00:10,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 23:00:10,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 23:00:10,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:00:10,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 23:00:10,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 23:00:10,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 23:00:10,329 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 23:00:10,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 23:00:10,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 23:00:10,329 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 23:00:10,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 23:00:10,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 23:00:10,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 23:00:10,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 23:00:10,620 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 23:00:10,620 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 23:00:10,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2022-12-11 23:00:11,574 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 23:00:11,796 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 23:00:11,797 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2022-12-11 23:00:11,815 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938f4314d/d00e5f7a996f4f80ba310a8c15f69202/FLAGac6d2a23c [2022-12-11 23:00:11,829 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938f4314d/d00e5f7a996f4f80ba310a8c15f69202 [2022-12-11 23:00:11,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 23:00:11,832 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 23:00:11,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 23:00:11,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 23:00:11,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 23:00:11,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:00:11" (1/1) ... [2022-12-11 23:00:11,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36713b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:11, skipping insertion in model container [2022-12-11 23:00:11,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 11:00:11" (1/1) ... [2022-12-11 23:00:11,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 23:00:11,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 23:00:12,070 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-deagle/circular_buffer_ok.i[30451,30464] [2022-12-11 23:00:12,078 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-deagle/circular_buffer_ok.i[30681,30694] [2022-12-11 23:00:12,084 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-deagle/circular_buffer_ok.i[30979,30992] [2022-12-11 23:00:12,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:00:12,105 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 23:00:12,143 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-deagle/circular_buffer_ok.i[30451,30464] [2022-12-11 23:00:12,154 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-deagle/circular_buffer_ok.i[30681,30694] [2022-12-11 23:00:12,158 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-deagle/circular_buffer_ok.i[30979,30992] [2022-12-11 23:00:12,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 23:00:12,189 INFO L208 MainTranslator]: Completed translation [2022-12-11 23:00:12,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12 WrapperNode [2022-12-11 23:00:12,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 23:00:12,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 23:00:12,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 23:00:12,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 23:00:12,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,251 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-12-11 23:00:12,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 23:00:12,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 23:00:12,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 23:00:12,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 23:00:12,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,282 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 23:00:12,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 23:00:12,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 23:00:12,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 23:00:12,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (1/1) ... [2022-12-11 23:00:12,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 23:00:12,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:12,320 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 23:00:12,337 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 23:00:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 23:00:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-11 23:00:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-11 23:00:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-11 23:00:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-11 23:00:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 23:00:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-11 23:00:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 23:00:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 23:00:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 23:00:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-11 23:00:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 23:00:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 23:00:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 23:00:12,353 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 23:00:12,475 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 23:00:12,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 23:00:12,700 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 23:00:12,706 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 23:00:12,706 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-11 23:00:12,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:00:12 BoogieIcfgContainer [2022-12-11 23:00:12,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 23:00:12,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 23:00:12,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 23:00:12,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 23:00:12,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 11:00:11" (1/3) ... [2022-12-11 23:00:12,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1600f8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:00:12, skipping insertion in model container [2022-12-11 23:00:12,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 11:00:12" (2/3) ... [2022-12-11 23:00:12,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1600f8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 11:00:12, skipping insertion in model container [2022-12-11 23:00:12,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 11:00:12" (3/3) ... [2022-12-11 23:00:12,714 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2022-12-11 23:00:12,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 23:00:12,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-11 23:00:12,747 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 23:00:12,849 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 23:00:12,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 148 transitions, 312 flow [2022-12-11 23:00:12,943 INFO L130 PetriNetUnfolder]: 11/146 cut-off events. [2022-12-11 23:00:12,943 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 23:00:12,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 11/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-12-11 23:00:12,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 148 transitions, 312 flow [2022-12-11 23:00:12,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 137 transitions, 283 flow [2022-12-11 23:00:12,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 23:00:12,965 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;@b2dacea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 23:00:12,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-11 23:00:12,981 INFO L130 PetriNetUnfolder]: 4/99 cut-off events. [2022-12-11 23:00:12,982 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-11 23:00:12,982 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:12,982 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] [2022-12-11 23:00:12,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:00:12,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash -408785584, now seen corresponding path program 1 times [2022-12-11 23:00:12,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:12,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505479391] [2022-12-11 23:00:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:12,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:13,111 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:13,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067565647] [2022-12-11 23:00:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:13,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:13,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:13,114 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 23:00:13,158 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 23:00:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:13,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 23:00:13,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:13,503 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 23:00:13,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:13,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505479391] [2022-12-11 23:00:13,505 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:13,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067565647] [2022-12-11 23:00:13,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067565647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:13,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:13,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 23:00:13,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515670003] [2022-12-11 23:00:13,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:13,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 23:00:13,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:13,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 23:00:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 23:00:13,544 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 148 [2022-12-11 23:00:13,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 137 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 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 23:00:13,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:13,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 148 [2022-12-11 23:00:13,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:13,709 INFO L130 PetriNetUnfolder]: 48/348 cut-off events. [2022-12-11 23:00:13,710 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-11 23:00:13,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 348 events. 48/348 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1558 event pairs, 5 based on Foata normal form. 38/345 useless extension candidates. Maximal degree in co-relation 363. Up to 44 conditions per place. [2022-12-11 23:00:13,718 INFO L137 encePairwiseOnDemand]: 141/148 looper letters, 24 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-12-11 23:00:13,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 138 transitions, 346 flow [2022-12-11 23:00:13,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 23:00:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 23:00:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 529 transitions. [2022-12-11 23:00:13,733 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.893581081081081 [2022-12-11 23:00:13,736 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, -2 predicate places. [2022-12-11 23:00:13,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 138 transitions, 346 flow [2022-12-11 23:00:13,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 138 transitions, 346 flow [2022-12-11 23:00:13,741 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 138 transitions, 346 flow [2022-12-11 23:00:13,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 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 23:00:13,742 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:13,742 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] [2022-12-11 23:00:13,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-11 23:00:13,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-11 23:00:13,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:00:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1083821067, now seen corresponding path program 1 times [2022-12-11 23:00:13,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:13,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89446825] [2022-12-11 23:00:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:14,322 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 23:00:14,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:14,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89446825] [2022-12-11 23:00:14,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89446825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:14,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:14,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:00:14,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49757188] [2022-12-11 23:00:14,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:14,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:00:14,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:14,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:00:14,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:00:14,331 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 148 [2022-12-11 23:00:14,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 138 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 121.66666666666667) internal successors, (730), 6 states have internal predecessors, (730), 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 23:00:14,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:14,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 148 [2022-12-11 23:00:14,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:14,441 INFO L130 PetriNetUnfolder]: 49/319 cut-off events. [2022-12-11 23:00:14,441 INFO L131 PetriNetUnfolder]: For 53/75 co-relation queries the response was YES. [2022-12-11 23:00:14,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 319 events. 49/319 cut-off events. For 53/75 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1207 event pairs, 6 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 391. Up to 56 conditions per place. [2022-12-11 23:00:14,444 INFO L137 encePairwiseOnDemand]: 141/148 looper letters, 21 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2022-12-11 23:00:14,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 135 transitions, 386 flow [2022-12-11 23:00:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 23:00:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 23:00:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 746 transitions. [2022-12-11 23:00:14,447 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8400900900900901 [2022-12-11 23:00:14,448 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 3 predicate places. [2022-12-11 23:00:14,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 135 transitions, 386 flow [2022-12-11 23:00:14,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 135 transitions, 386 flow [2022-12-11 23:00:14,451 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 135 transitions, 386 flow [2022-12-11 23:00:14,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.66666666666667) internal successors, (730), 6 states have internal predecessors, (730), 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 23:00:14,451 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:14,451 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 23:00:14,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 23:00:14,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:00:14,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash -187723191, now seen corresponding path program 1 times [2022-12-11 23:00:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:14,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527355957] [2022-12-11 23:00:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:14,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:14,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:14,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15247606] [2022-12-11 23:00:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:14,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:14,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:14,480 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 23:00:14,482 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 23:00:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:14,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-11 23:00:14,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:14,615 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 23:00:14,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:14,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:14,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527355957] [2022-12-11 23:00:14,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:14,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15247606] [2022-12-11 23:00:14,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15247606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:14,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:14,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 23:00:14,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397540753] [2022-12-11 23:00:14,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:14,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 23:00:14,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:14,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 23:00:14,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 23:00:14,623 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 148 [2022-12-11 23:00:14,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 135 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 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 23:00:14,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:14,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 148 [2022-12-11 23:00:14,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:14,782 INFO L130 PetriNetUnfolder]: 86/496 cut-off events. [2022-12-11 23:00:14,782 INFO L131 PetriNetUnfolder]: For 297/314 co-relation queries the response was YES. [2022-12-11 23:00:14,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 496 events. 86/496 cut-off events. For 297/314 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2262 event pairs, 12 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 824. Up to 80 conditions per place. [2022-12-11 23:00:14,787 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 34 selfloop transitions, 9 changer transitions 0/151 dead transitions. [2022-12-11 23:00:14,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 151 transitions, 553 flow [2022-12-11 23:00:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 23:00:14,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 23:00:14,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 850 transitions. [2022-12-11 23:00:14,789 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8204633204633205 [2022-12-11 23:00:14,790 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 9 predicate places. [2022-12-11 23:00:14,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 151 transitions, 553 flow [2022-12-11 23:00:14,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 151 transitions, 553 flow [2022-12-11 23:00:14,793 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 151 transitions, 553 flow [2022-12-11 23:00:14,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 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 23:00:14,793 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:14,793 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, 1] [2022-12-11 23:00:14,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 23:00:15,000 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,SelfDestructingSolverStorable2 [2022-12-11 23:00:15,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:00:15,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:15,001 INFO L85 PathProgramCache]: Analyzing trace with hash 354152347, now seen corresponding path program 1 times [2022-12-11 23:00:15,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:15,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512844097] [2022-12-11 23:00:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:15,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:15,107 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 23:00:15,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:15,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512844097] [2022-12-11 23:00:15,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512844097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:15,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:15,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 23:00:15,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121928302] [2022-12-11 23:00:15,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:15,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 23:00:15,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 23:00:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 23:00:15,109 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 148 [2022-12-11 23:00:15,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 151 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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 23:00:15,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:15,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 148 [2022-12-11 23:00:15,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:15,198 INFO L130 PetriNetUnfolder]: 109/648 cut-off events. [2022-12-11 23:00:15,198 INFO L131 PetriNetUnfolder]: For 666/687 co-relation queries the response was YES. [2022-12-11 23:00:15,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 648 events. 109/648 cut-off events. For 666/687 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3356 event pairs, 21 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 1147. Up to 97 conditions per place. [2022-12-11 23:00:15,202 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 21 selfloop transitions, 3 changer transitions 1/155 dead transitions. [2022-12-11 23:00:15,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 155 transitions, 639 flow [2022-12-11 23:00:15,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 23:00:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 23:00:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2022-12-11 23:00:15,203 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9099099099099099 [2022-12-11 23:00:15,205 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 11 predicate places. [2022-12-11 23:00:15,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 155 transitions, 639 flow [2022-12-11 23:00:15,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 154 transitions, 626 flow [2022-12-11 23:00:15,208 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 154 transitions, 626 flow [2022-12-11 23:00:15,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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 23:00:15,208 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:15,209 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2022-12-11 23:00:15,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 23:00:15,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:00:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:15,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1533213792, now seen corresponding path program 1 times [2022-12-11 23:00:15,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:15,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504550763] [2022-12-11 23:00:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:15,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:15,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:15,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330150923] [2022-12-11 23:00:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:15,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:15,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:15,244 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 23:00:15,246 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 23:00:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:15,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-11 23:00:15,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:15,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:15,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:15,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504550763] [2022-12-11 23:00:15,440 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:15,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330150923] [2022-12-11 23:00:15,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330150923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:15,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:15,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 23:00:15,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050107555] [2022-12-11 23:00:15,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:15,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 23:00:15,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:15,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 23:00:15,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 23:00:15,446 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 148 [2022-12-11 23:00:15,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 154 transitions, 626 flow. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 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 23:00:15,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:15,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 148 [2022-12-11 23:00:15,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:15,511 INFO L130 PetriNetUnfolder]: 82/508 cut-off events. [2022-12-11 23:00:15,511 INFO L131 PetriNetUnfolder]: For 784/808 co-relation queries the response was YES. [2022-12-11 23:00:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 508 events. 82/508 cut-off events. For 784/808 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2296 event pairs, 18 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 951. Up to 80 conditions per place. [2022-12-11 23:00:15,514 INFO L137 encePairwiseOnDemand]: 146/148 looper letters, 28 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2022-12-11 23:00:15,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 141 transitions, 623 flow [2022-12-11 23:00:15,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 23:00:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 23:00:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-12-11 23:00:15,516 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8716216216216216 [2022-12-11 23:00:15,517 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 8 predicate places. [2022-12-11 23:00:15,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 141 transitions, 623 flow [2022-12-11 23:00:15,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 141 transitions, 623 flow [2022-12-11 23:00:15,520 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 623 flow [2022-12-11 23:00:15,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 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 23:00:15,520 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:15,520 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, 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 23:00:15,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-11 23:00:15,723 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 23:00:15,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:00:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:15,723 INFO L85 PathProgramCache]: Analyzing trace with hash 278711348, now seen corresponding path program 1 times [2022-12-11 23:00:15,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:15,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299843257] [2022-12-11 23:00:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:15,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:15,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:15,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662586145] [2022-12-11 23:00:15,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:15,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:15,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:15,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:00:15,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 23:00:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:15,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-11 23:00:15,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:15,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-11 23:00:15,869 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 23:00:15,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:15,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:15,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299843257] [2022-12-11 23:00:15,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:15,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662586145] [2022-12-11 23:00:15,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662586145] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:15,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:15,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 23:00:15,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078455068] [2022-12-11 23:00:15,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:15,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 23:00:15,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:15,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 23:00:15,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 23:00:15,871 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 148 [2022-12-11 23:00:15,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 623 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 23:00:15,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:15,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 148 [2022-12-11 23:00:15,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:15,925 INFO L130 PetriNetUnfolder]: 77/449 cut-off events. [2022-12-11 23:00:15,925 INFO L131 PetriNetUnfolder]: For 1371/1391 co-relation queries the response was YES. [2022-12-11 23:00:15,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 449 events. 77/449 cut-off events. For 1371/1391 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2129 event pairs, 10 based on Foata normal form. 6/424 useless extension candidates. Maximal degree in co-relation 951. Up to 73 conditions per place. [2022-12-11 23:00:15,927 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 29 selfloop transitions, 4 changer transitions 1/146 dead transitions. [2022-12-11 23:00:15,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 146 transitions, 766 flow [2022-12-11 23:00:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 23:00:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 23:00:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-12-11 23:00:15,929 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8716216216216216 [2022-12-11 23:00:15,931 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 10 predicate places. [2022-12-11 23:00:15,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 146 transitions, 766 flow [2022-12-11 23:00:15,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 145 transitions, 749 flow [2022-12-11 23:00:15,933 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 145 transitions, 749 flow [2022-12-11 23:00:15,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 23:00:15,933 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:15,934 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, 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 23:00:15,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 23:00:16,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:16,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:00:16,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash -778348974, now seen corresponding path program 1 times [2022-12-11 23:00:16,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:16,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611747202] [2022-12-11 23:00:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:16,154 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:16,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399983199] [2022-12-11 23:00:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:16,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:16,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:16,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:00:16,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 23:00:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:16,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-11 23:00:16,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:16,601 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 23:00:16,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:16,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:16,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611747202] [2022-12-11 23:00:16,602 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:16,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399983199] [2022-12-11 23:00:16,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399983199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:16,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:16,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 23:00:16,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67957390] [2022-12-11 23:00:16,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:16,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 23:00:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:16,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 23:00:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-11 23:00:16,604 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 148 [2022-12-11 23:00:16,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 145 transitions, 749 flow. Second operand has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 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 23:00:16,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:16,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 148 [2022-12-11 23:00:16,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:16,738 INFO L130 PetriNetUnfolder]: 107/583 cut-off events. [2022-12-11 23:00:16,738 INFO L131 PetriNetUnfolder]: For 2606/2636 co-relation queries the response was YES. [2022-12-11 23:00:16,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1773 conditions, 583 events. 107/583 cut-off events. For 2606/2636 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3045 event pairs, 19 based on Foata normal form. 0/543 useless extension candidates. Maximal degree in co-relation 1388. Up to 111 conditions per place. [2022-12-11 23:00:16,741 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 47 selfloop transitions, 8 changer transitions 0/160 dead transitions. [2022-12-11 23:00:16,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 160 transitions, 1041 flow [2022-12-11 23:00:16,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 23:00:16,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 23:00:16,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 964 transitions. [2022-12-11 23:00:16,744 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8141891891891891 [2022-12-11 23:00:16,744 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 17 predicate places. [2022-12-11 23:00:16,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 160 transitions, 1041 flow [2022-12-11 23:00:16,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 160 transitions, 1041 flow [2022-12-11 23:00:16,747 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 160 transitions, 1041 flow [2022-12-11 23:00:16,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 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 23:00:16,748 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:16,748 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, 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 23:00:16,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 23:00:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:16,954 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:00:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash 381507489, now seen corresponding path program 1 times [2022-12-11 23:00:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:16,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392629827] [2022-12-11 23:00:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:16,966 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:16,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286762529] [2022-12-11 23:00:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:16,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:16,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:16,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:00:16,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 23:00:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:17,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-11 23:00:17,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:17,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-11 23:00:17,322 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-11 23:00:17,323 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 23:00:17,366 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-11 23:00:17,366 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 23:00:17,444 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 13 treesize of output 15 [2022-12-11 23:00:17,484 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 13 treesize of output 15 [2022-12-11 23:00:17,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 52 treesize of output 45 [2022-12-11 23:00:17,730 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 52 treesize of output 46 [2022-12-11 23:00:17,837 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 23:00:17,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:17,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:17,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392629827] [2022-12-11 23:00:17,837 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:17,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286762529] [2022-12-11 23:00:17,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286762529] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:17,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:17,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-11 23:00:17,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024899743] [2022-12-11 23:00:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:17,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-11 23:00:17,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:17,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-11 23:00:17,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-12-11 23:00:17,840 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 148 [2022-12-11 23:00:17,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 160 transitions, 1041 flow. Second operand has 16 states, 16 states have (on average 83.75) internal successors, (1340), 16 states have internal predecessors, (1340), 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 23:00:17,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:17,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 148 [2022-12-11 23:00:17,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:18,630 INFO L130 PetriNetUnfolder]: 869/2797 cut-off events. [2022-12-11 23:00:18,631 INFO L131 PetriNetUnfolder]: For 5977/6066 co-relation queries the response was YES. [2022-12-11 23:00:18,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 2797 events. 869/2797 cut-off events. For 5977/6066 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 21002 event pairs, 235 based on Foata normal form. 2/2575 useless extension candidates. Maximal degree in co-relation 6527. Up to 838 conditions per place. [2022-12-11 23:00:18,679 INFO L137 encePairwiseOnDemand]: 129/148 looper letters, 156 selfloop transitions, 29 changer transitions 9/273 dead transitions. [2022-12-11 23:00:18,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 273 transitions, 2159 flow [2022-12-11 23:00:18,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-11 23:00:18,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-11 23:00:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1776 transitions. [2022-12-11 23:00:18,683 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6 [2022-12-11 23:00:18,684 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 36 predicate places. [2022-12-11 23:00:18,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 273 transitions, 2159 flow [2022-12-11 23:00:18,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 264 transitions, 2038 flow [2022-12-11 23:00:18,694 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 264 transitions, 2038 flow [2022-12-11 23:00:18,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 83.75) internal successors, (1340), 16 states have internal predecessors, (1340), 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 23:00:18,694 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:18,695 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 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 23:00:18,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-11 23:00:18,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:18,900 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:00:18,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:18,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1435664665, now seen corresponding path program 1 times [2022-12-11 23:00:18,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:18,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435282893] [2022-12-11 23:00:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:18,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:18,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:18,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026944987] [2022-12-11 23:00:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:18,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:18,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:18,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:00:18,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 23:00:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:19,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-11 23:00:19,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:19,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 23:00:19,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:19,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435282893] [2022-12-11 23:00:19,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:19,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026944987] [2022-12-11 23:00:19,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026944987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 23:00:19,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 23:00:19,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 23:00:19,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816539312] [2022-12-11 23:00:19,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 23:00:19,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 23:00:19,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:19,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 23:00:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 23:00:19,037 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 148 [2022-12-11 23:00:19,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 264 transitions, 2038 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 23:00:19,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:19,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 148 [2022-12-11 23:00:19,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:19,201 INFO L130 PetriNetUnfolder]: 629/2048 cut-off events. [2022-12-11 23:00:19,202 INFO L131 PetriNetUnfolder]: For 4036/4100 co-relation queries the response was YES. [2022-12-11 23:00:19,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5067 conditions, 2048 events. 629/2048 cut-off events. For 4036/4100 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12413 event pairs, 163 based on Foata normal form. 2/1864 useless extension candidates. Maximal degree in co-relation 4352. Up to 485 conditions per place. [2022-12-11 23:00:19,246 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 26 selfloop transitions, 5 changer transitions 0/235 dead transitions. [2022-12-11 23:00:19,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 235 transitions, 1594 flow [2022-12-11 23:00:19,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 23:00:19,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 23:00:19,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2022-12-11 23:00:19,247 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9054054054054054 [2022-12-11 23:00:19,248 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 38 predicate places. [2022-12-11 23:00:19,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 235 transitions, 1594 flow [2022-12-11 23:00:19,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 235 transitions, 1594 flow [2022-12-11 23:00:19,253 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 235 transitions, 1594 flow [2022-12-11 23:00:19,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 23:00:19,253 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:00:19,253 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:00:19,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 23:00:19,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:19,459 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:00:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:00:19,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2022123627, now seen corresponding path program 1 times [2022-12-11 23:00:19,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:00:19,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530930411] [2022-12-11 23:00:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:19,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:00:19,476 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:00:19,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084137650] [2022-12-11 23:00:19,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:00:19,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:00:19,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:00:19,478 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:00:19,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-11 23:00:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:00:19,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-11 23:00:19,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:00:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:20,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:00:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:00:30,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:00:30,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530930411] [2022-12-11 23:00:30,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:00:30,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084137650] [2022-12-11 23:00:30,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084137650] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:00:30,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-11 23:00:30,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2022-12-11 23:00:30,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220851690] [2022-12-11 23:00:30,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-11 23:00:30,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-11 23:00:30,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:00:30,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-11 23:00:30,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-12-11 23:00:30,811 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 148 [2022-12-11 23:00:30,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 235 transitions, 1594 flow. Second operand has 22 states, 22 states have (on average 116.31818181818181) internal successors, (2559), 22 states have internal predecessors, (2559), 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 23:00:30,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:00:30,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 148 [2022-12-11 23:00:30,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:00:44,282 WARN L233 SmtUtils]: Spent 12.09s on a formula simplification. DAG size of input: 48 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 23:00:57,446 WARN L233 SmtUtils]: Spent 11.88s on a formula simplification. DAG size of input: 51 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 23:01:10,515 WARN L233 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 53 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 23:01:21,257 INFO L130 PetriNetUnfolder]: 985/3101 cut-off events. [2022-12-11 23:01:21,257 INFO L131 PetriNetUnfolder]: For 7491/7637 co-relation queries the response was YES. [2022-12-11 23:01:21,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8049 conditions, 3101 events. 985/3101 cut-off events. For 7491/7637 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 18311 event pairs, 310 based on Foata normal form. 10/2824 useless extension candidates. Maximal degree in co-relation 6983. Up to 1052 conditions per place. [2022-12-11 23:01:21,270 INFO L137 encePairwiseOnDemand]: 135/148 looper letters, 63 selfloop transitions, 19 changer transitions 1/262 dead transitions. [2022-12-11 23:01:21,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 262 transitions, 2095 flow [2022-12-11 23:01:21,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-11 23:01:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-11 23:01:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2229 transitions. [2022-12-11 23:01:21,274 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.792674253200569 [2022-12-11 23:01:21,275 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 56 predicate places. [2022-12-11 23:01:21,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 262 transitions, 2095 flow [2022-12-11 23:01:21,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 261 transitions, 2070 flow [2022-12-11 23:01:21,282 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 261 transitions, 2070 flow [2022-12-11 23:01:21,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 116.31818181818181) internal successors, (2559), 22 states have internal predecessors, (2559), 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 23:01:21,284 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:01:21,284 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-12-11 23:01:21,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-11 23:01:21,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-11 23:01:21,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:01:21,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:01:21,486 INFO L85 PathProgramCache]: Analyzing trace with hash -117658834, now seen corresponding path program 1 times [2022-12-11 23:01:21,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:01:21,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936875270] [2022-12-11 23:01:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:01:21,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:01:21,499 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:01:21,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41980588] [2022-12-11 23:01:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:01:21,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:01:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:01:21,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:01:21,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-11 23:01:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 23:01:22,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-11 23:01:22,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:01:22,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 62 treesize of output 57 [2022-12-11 23:01:22,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 107 [2022-12-11 23:01:22,556 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-11 23:01:22,567 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:01:22,569 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2022-12-11 23:01:22,847 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 19 treesize of output 7 [2022-12-11 23:01:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:01:22,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:01:23,335 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 41 treesize of output 37 [2022-12-11 23:01:23,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:01:23,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 76 [2022-12-11 23:01:23,415 INFO L321 Elim1Store]: treesize reduction 50, result has 51.0 percent of original size [2022-12-11 23:01:23,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 130 [2022-12-11 23:01:23,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:01:23,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 87 [2022-12-11 23:01:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:01:33,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:01:33,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936875270] [2022-12-11 23:01:33,092 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:01:33,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41980588] [2022-12-11 23:01:33,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41980588] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:01:33,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-11 23:01:33,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 46 [2022-12-11 23:01:33,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563345809] [2022-12-11 23:01:33,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-11 23:01:33,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-11 23:01:33,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:01:33,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-11 23:01:33,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1881, Unknown=0, NotChecked=0, Total=2070 [2022-12-11 23:01:33,095 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 148 [2022-12-11 23:01:33,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 261 transitions, 2070 flow. Second operand has 46 states, 46 states have (on average 70.34782608695652) internal successors, (3236), 46 states have internal predecessors, (3236), 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 23:01:33,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:01:33,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 148 [2022-12-11 23:01:33,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:02:52,899 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 99 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 23:03:39,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-11 23:04:07,078 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 81 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 23:04:29,267 WARN L233 SmtUtils]: Spent 11.28s on a formula simplification. DAG size of input: 84 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 23:04:38,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-11 23:04:41,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-11 23:04:44,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-11 23:07:26,344 INFO L130 PetriNetUnfolder]: 6435/16005 cut-off events. [2022-12-11 23:07:26,344 INFO L131 PetriNetUnfolder]: For 34734/36672 co-relation queries the response was YES. [2022-12-11 23:07:26,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48916 conditions, 16005 events. 6435/16005 cut-off events. For 34734/36672 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 135001 event pairs, 292 based on Foata normal form. 89/14857 useless extension candidates. Maximal degree in co-relation 42962. Up to 5476 conditions per place. [2022-12-11 23:07:26,402 INFO L137 encePairwiseOnDemand]: 113/148 looper letters, 1260 selfloop transitions, 592 changer transitions 316/2222 dead transitions. [2022-12-11 23:07:26,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 2222 transitions, 18774 flow [2022-12-11 23:07:26,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2022-12-11 23:07:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2022-12-11 23:07:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 19737 transitions. [2022-12-11 23:07:26,422 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.49209633988231777 [2022-12-11 23:07:26,423 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 326 predicate places. [2022-12-11 23:07:26,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 459 places, 2222 transitions, 18774 flow [2022-12-11 23:07:26,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 1906 transitions, 14992 flow [2022-12-11 23:07:26,465 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 1906 transitions, 14992 flow [2022-12-11 23:07:26,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 70.34782608695652) internal successors, (3236), 46 states have internal predecessors, (3236), 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 23:07:26,466 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:07:26,466 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-12-11 23:07:26,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-11 23:07:26,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:07:26,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:07:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:07:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2145131716, now seen corresponding path program 2 times [2022-12-11 23:07:26,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:07:26,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975096809] [2022-12-11 23:07:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:07:26,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:07:26,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:07:26,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275789298] [2022-12-11 23:07:26,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 23:07:26,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:07:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:07:26,698 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:07:26,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-11 23:07:27,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 23:07:27,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:07:27,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-11 23:07:27,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:07:27,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 62 treesize of output 57 [2022-12-11 23:07:27,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 107 [2022-12-11 23:07:27,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 72 treesize of output 13 [2022-12-11 23:07:28,178 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 19 treesize of output 7 [2022-12-11 23:07:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:07:28,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:07:28,652 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 41 treesize of output 37 [2022-12-11 23:07:28,663 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:07:28,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 76 [2022-12-11 23:07:28,694 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:07:28,695 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2022-12-11 23:07:28,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:07:28,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 135 [2022-12-11 23:07:48,499 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:07:48,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:07:48,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975096809] [2022-12-11 23:07:48,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:07:48,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275789298] [2022-12-11 23:07:48,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275789298] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:07:48,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-11 23:07:48,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 47 [2022-12-11 23:07:48,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507976603] [2022-12-11 23:07:48,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-11 23:07:48,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-11 23:07:48,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:07:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-11 23:07:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2022-12-11 23:07:48,502 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 148 [2022-12-11 23:07:48,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 1906 transitions, 14992 flow. Second operand has 47 states, 47 states have (on average 70.27659574468085) internal successors, (3303), 47 states have internal predecessors, (3303), 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 23:07:48,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:07:48,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 148 [2022-12-11 23:07:48,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:08:27,187 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 107 DAG size of output: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 23:08:47,448 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 84 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 23:09:25,421 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 86 DAG size of output: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-11 23:09:30,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-11 23:12:53,237 INFO L130 PetriNetUnfolder]: 9125/22732 cut-off events. [2022-12-11 23:12:53,238 INFO L131 PetriNetUnfolder]: For 42604/46529 co-relation queries the response was YES. [2022-12-11 23:12:53,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84696 conditions, 22732 events. 9125/22732 cut-off events. For 42604/46529 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 205874 event pairs, 307 based on Foata normal form. 334/21674 useless extension candidates. Maximal degree in co-relation 78483. Up to 7738 conditions per place. [2022-12-11 23:12:53,337 INFO L137 encePairwiseOnDemand]: 113/148 looper letters, 2490 selfloop transitions, 890 changer transitions 177/3611 dead transitions. [2022-12-11 23:12:53,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 3611 transitions, 35950 flow [2022-12-11 23:12:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2022-12-11 23:12:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2022-12-11 23:12:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 14567 transitions. [2022-12-11 23:12:53,347 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4946013853049029 [2022-12-11 23:12:53,347 INFO L295 CegarLoopForPetriNet]: 133 programPoint places, 510 predicate places. [2022-12-11 23:12:53,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 643 places, 3611 transitions, 35950 flow [2022-12-11 23:12:53,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 643 places, 3434 transitions, 33066 flow [2022-12-11 23:12:53,442 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 3434 transitions, 33066 flow [2022-12-11 23:12:53,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 70.27659574468085) internal successors, (3303), 47 states have internal predecessors, (3303), 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 23:12:53,443 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 23:12:53,444 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-12-11 23:12:53,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-11 23:12:53,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-11 23:12:53,644 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-11 23:12:53,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 23:12:53,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1016589994, now seen corresponding path program 3 times [2022-12-11 23:12:53,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 23:12:53,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118699906] [2022-12-11 23:12:53,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 23:12:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 23:12:53,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-11 23:12:53,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624772340] [2022-12-11 23:12:53,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 23:12:53,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 23:12:53,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 23:12:53,667 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 23:12:53,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-11 23:12:54,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-11 23:12:54,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 23:12:54,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-11 23:12:54,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 23:12:54,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 62 treesize of output 57 [2022-12-11 23:12:54,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 107 [2022-12-11 23:12:54,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 72 treesize of output 13 [2022-12-11 23:12:55,289 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 23:12:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:12:55,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 23:12:55,784 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 41 treesize of output 37 [2022-12-11 23:12:55,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:12:55,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 76 [2022-12-11 23:12:55,821 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:12:55,822 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2022-12-11 23:12:55,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 23:12:55,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 170 treesize of output 135 [2022-12-11 23:13:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 23:13:09,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 23:13:09,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118699906] [2022-12-11 23:13:09,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-11 23:13:09,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624772340] [2022-12-11 23:13:09,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624772340] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 23:13:09,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-11 23:13:09,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 48 [2022-12-11 23:13:09,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114837118] [2022-12-11 23:13:09,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-11 23:13:09,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-11 23:13:09,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 23:13:09,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-11 23:13:09,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2052, Unknown=0, NotChecked=0, Total=2256 [2022-12-11 23:13:09,854 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 148 [2022-12-11 23:13:09,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 3434 transitions, 33066 flow. Second operand has 48 states, 48 states have (on average 70.5) internal successors, (3384), 48 states have internal predecessors, (3384), 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 23:13:09,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 23:13:09,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 148 [2022-12-11 23:13:09,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 23:14:06,528 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 103 DAG size of output: 94 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-12-11 23:14:39,779 WARN L249 SmtUtils]: Removed 10 from assertion stack [2022-12-11 23:14:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-12-11 23:14:39,780 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-12-11 23:14:39,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-11 23:14:39,816 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 23:14:39,816 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 23:14:39,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-11 23:14:39,981 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 86 for 1378ms.. [2022-12-11 23:14:39,982 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 8 remaining) [2022-12-11 23:14:39,982 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2022-12-11 23:14:39,982 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-12-11 23:14:39,982 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-12-11 23:14:39,982 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-12-11 23:14:39,982 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2022-12-11 23:14:39,982 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2022-12-11 23:14:39,983 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 23:14:39,985 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 23:14:39,985 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 23:14:39,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 11:14:39 BasicIcfg [2022-12-11 23:14:39,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 23:14:39,988 INFO L158 Benchmark]: Toolchain (without parser) took 868156.03ms. Allocated memory was 180.4MB in the beginning and 394.3MB in the end (delta: 213.9MB). Free memory was 155.2MB in the beginning and 164.1MB in the end (delta: -9.0MB). Peak memory consumption was 205.7MB. Max. memory is 8.0GB. [2022-12-11 23:14:39,988 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 180.4MB. Free memory was 156.9MB in the beginning and 156.8MB in the end (delta: 63.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 23:14:39,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.77ms. Allocated memory is still 180.4MB. Free memory was 154.6MB in the beginning and 134.4MB in the end (delta: 20.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-11 23:14:39,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.30ms. Allocated memory is still 180.4MB. Free memory was 134.4MB in the beginning and 131.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-11 23:14:39,988 INFO L158 Benchmark]: Boogie Preprocessor took 32.67ms. Allocated memory is still 180.4MB. Free memory was 131.8MB in the beginning and 130.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 23:14:39,988 INFO L158 Benchmark]: RCFGBuilder took 422.79ms. Allocated memory is still 180.4MB. Free memory was 130.2MB in the beginning and 112.4MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-11 23:14:39,989 INFO L158 Benchmark]: TraceAbstraction took 867277.77ms. Allocated memory was 180.4MB in the beginning and 394.3MB in the end (delta: 213.9MB). Free memory was 111.4MB in the beginning and 164.1MB in the end (delta: -52.8MB). Peak memory consumption was 162.7MB. Max. memory is 8.0GB. [2022-12-11 23:14:39,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 180.4MB. Free memory was 156.9MB in the beginning and 156.8MB in the end (delta: 63.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 356.77ms. Allocated memory is still 180.4MB. Free memory was 154.6MB in the beginning and 134.4MB in the end (delta: 20.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.30ms. Allocated memory is still 180.4MB. Free memory was 134.4MB in the beginning and 131.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.67ms. Allocated memory is still 180.4MB. Free memory was 131.8MB in the beginning and 130.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 422.79ms. Allocated memory is still 180.4MB. Free memory was 130.2MB in the beginning and 112.4MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 867277.77ms. Allocated memory was 180.4MB in the beginning and 394.3MB in the end (delta: 213.9MB). Free memory was 111.4MB in the beginning and 164.1MB in the end (delta: -52.8MB). Peak memory consumption was 162.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 86 for 1378ms.. - TimeoutResultAtElement [Line: 764]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 86 for 1378ms.. - TimeoutResultAtElement [Line: 763]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 86 for 1378ms.. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 86 for 1378ms.. - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 86 for 1378ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 212 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.2s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 867.1s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 800.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 7283 SdHoareTripleChecker+Valid, 77.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7283 mSDsluCounter, 6417 SdHoareTripleChecker+Invalid, 75.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5987 mSDsCounter, 325 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14414 IncrementalHoareTripleChecker+Invalid, 14742 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 325 mSolverCounterUnsat, 430 mSDtfsCounter, 14414 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2314 GetRequests, 1519 SyntacticMatches, 1 SemanticMatches, 793 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64686 ImplicationChecksByTransitivity, 739.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33066occurred in iteration=12, InterpolantAutomatonStates: 546, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 6842 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 60.8s InterpolantComputationTime, 1279 NumberOfCodeBlocks, 1279 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1825 ConstructedInterpolants, 6 QuantifiedInterpolants, 31765 SizeOfPredicates, 109 NumberOfNonLiveVariables, 3142 ConjunctsInSsa, 245 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 23/301 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown