/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/weaver/popl20-simple-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 18:23:08,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 18:23:08,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 18:23:08,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 18:23:08,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 18:23:08,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 18:23:08,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 18:23:08,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 18:23:08,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 18:23:08,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 18:23:08,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 18:23:08,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 18:23:08,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 18:23:08,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 18:23:08,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 18:23:08,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 18:23:08,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 18:23:08,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 18:23:08,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 18:23:08,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 18:23:08,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 18:23:08,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 18:23:08,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 18:23:08,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 18:23:08,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 18:23:08,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 18:23:08,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 18:23:08,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 18:23:08,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 18:23:08,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 18:23:08,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 18:23:08,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 18:23:08,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 18:23:08,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 18:23:08,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 18:23:08,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 18:23:08,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 18:23:08,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 18:23:08,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 18:23:08,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 18:23:08,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 18:23:08,218 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 [2022-12-06 18:23:08,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 18:23:08,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 18:23:08,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 18:23:08,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 18:23:08,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 18:23:08,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 18:23:08,250 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 18:23:08,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 18:23:08,250 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 18:23:08,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 18:23:08,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 18:23:08,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 18:23:08,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 18:23:08,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 18:23:08,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 18:23:08,252 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 18:23:08,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 18:23:08,252 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 18:23:08,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 18:23:08,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 18:23:08,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 18:23:08,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 18:23:08,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 18:23:08,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:23:08,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 18:23:08,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 18:23:08,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 18:23:08,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 18:23:08,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 18:23:08,253 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 18:23:08,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 18:23:08,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 18:23:08,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 18:23:08,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 18:23:08,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 18:23:08,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 18:23:08,510 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 18:23:08,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-12-06 18:23:09,439 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 18:23:09,638 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 18:23:09,639 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-12-06 18:23:09,644 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3df0c0acc/33675826705f4ed29a719c4d6307ebc0/FLAG04479df49 [2022-12-06 18:23:09,657 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3df0c0acc/33675826705f4ed29a719c4d6307ebc0 [2022-12-06 18:23:09,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 18:23:09,659 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 18:23:09,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 18:23:09,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 18:23:09,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 18:23:09,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb2c801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09, skipping insertion in model container [2022-12-06 18:23:09,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 18:23:09,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 18:23:09,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:23:09,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:23:09,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:23:09,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:23:09,789 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-12-06 18:23:09,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:23:09,800 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 18:23:09,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:23:09,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:23:09,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:23:09,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:23:09,827 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-12-06 18:23:09,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:23:09,838 INFO L208 MainTranslator]: Completed translation [2022-12-06 18:23:09,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09 WrapperNode [2022-12-06 18:23:09,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 18:23:09,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 18:23:09,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 18:23:09,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 18:23:09,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,885 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 128 [2022-12-06 18:23:09,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 18:23:09,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 18:23:09,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 18:23:09,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 18:23:09,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,915 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 18:23:09,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 18:23:09,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 18:23:09,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 18:23:09,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (1/1) ... [2022-12-06 18:23:09,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:23:09,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:23:09,944 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) [2022-12-06 18:23:09,963 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 [2022-12-06 18:23:09,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 18:23:09,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 18:23:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 18:23:09,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 18:23:09,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 18:23:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 18:23:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 18:23:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 18:23:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 18:23:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 18:23:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 18:23:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 18:23:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 18:23:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 18:23:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 18:23:09,978 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 18:23:10,098 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 18:23:10,099 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 18:23:10,324 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 18:23:10,391 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 18:23:10,391 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-06 18:23:10,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:23:10 BoogieIcfgContainer [2022-12-06 18:23:10,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 18:23:10,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 18:23:10,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 18:23:10,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 18:23:10,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:23:09" (1/3) ... [2022-12-06 18:23:10,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef2723f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:23:10, skipping insertion in model container [2022-12-06 18:23:10,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:23:09" (2/3) ... [2022-12-06 18:23:10,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef2723f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:23:10, skipping insertion in model container [2022-12-06 18:23:10,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:23:10" (3/3) ... [2022-12-06 18:23:10,399 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-12-06 18:23:10,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 18:23:10,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 18:23:10,412 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 18:23:10,448 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 18:23:10,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 110 transitions, 236 flow [2022-12-06 18:23:10,502 INFO L130 PetriNetUnfolder]: 9/108 cut-off events. [2022-12-06 18:23:10,502 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 18:23:10,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 108 events. 9/108 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2022-12-06 18:23:10,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 110 transitions, 236 flow [2022-12-06 18:23:10,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 100 transitions, 212 flow [2022-12-06 18:23:10,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 18:23:10,521 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;@9a8e09d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 18:23:10,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 18:23:10,537 INFO L130 PetriNetUnfolder]: 9/99 cut-off events. [2022-12-06 18:23:10,538 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 18:23:10,538 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:23:10,538 INFO L213 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] [2022-12-06 18:23:10,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:23:10,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:23:10,542 INFO L85 PathProgramCache]: Analyzing trace with hash 926952719, now seen corresponding path program 1 times [2022-12-06 18:23:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:23:10,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968860210] [2022-12-06 18:23:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:23:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:10,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:23:10,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968860210] [2022-12-06 18:23:10,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968860210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:23:10,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:23:10,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 18:23:10,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623168023] [2022-12-06 18:23:10,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:23:10,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-06 18:23:10,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:23:10,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-06 18:23:10,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-06 18:23:10,828 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 110 [2022-12-06 18:23:10,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 212 flow. Second operand has 2 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 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) [2022-12-06 18:23:10,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:23:10,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 110 [2022-12-06 18:23:10,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:23:10,883 INFO L130 PetriNetUnfolder]: 5/96 cut-off events. [2022-12-06 18:23:10,884 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-06 18:23:10,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 96 events. 5/96 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 8/98 useless extension candidates. Maximal degree in co-relation 75. Up to 9 conditions per place. [2022-12-06 18:23:10,885 INFO L137 encePairwiseOnDemand]: 104/110 looper letters, 6 selfloop transitions, 0 changer transitions 3/94 dead transitions. [2022-12-06 18:23:10,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 94 transitions, 212 flow [2022-12-06 18:23:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-06 18:23:10,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-06 18:23:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 206 transitions. [2022-12-06 18:23:10,896 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9363636363636364 [2022-12-06 18:23:10,899 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 1 predicate places. [2022-12-06 18:23:10,900 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 212 flow [2022-12-06 18:23:10,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.0) internal successors, (200), 2 states have internal predecessors, (200), 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) [2022-12-06 18:23:10,900 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:23:10,900 INFO L213 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] [2022-12-06 18:23:10,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 18:23:10,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:23:10,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:23:10,902 INFO L85 PathProgramCache]: Analyzing trace with hash -511510911, now seen corresponding path program 1 times [2022-12-06 18:23:10,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:23:10,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230751457] [2022-12-06 18:23:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:10,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:23:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:11,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:23:11,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230751457] [2022-12-06 18:23:11,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230751457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:23:11,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:23:11,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:23:11,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555659662] [2022-12-06 18:23:11,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:23:11,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:23:11,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:23:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:23:11,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:23:11,188 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 110 [2022-12-06 18:23:11,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 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) [2022-12-06 18:23:11,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:23:11,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 110 [2022-12-06 18:23:11,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:23:11,342 INFO L130 PetriNetUnfolder]: 7/114 cut-off events. [2022-12-06 18:23:11,342 INFO L131 PetriNetUnfolder]: For 33/35 co-relation queries the response was YES. [2022-12-06 18:23:11,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 114 events. 7/114 cut-off events. For 33/35 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 89. Up to 15 conditions per place. [2022-12-06 18:23:11,343 INFO L137 encePairwiseOnDemand]: 102/110 looper letters, 21 selfloop transitions, 2 changer transitions 8/102 dead transitions. [2022-12-06 18:23:11,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 102 transitions, 304 flow [2022-12-06 18:23:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 18:23:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 18:23:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2022-12-06 18:23:11,357 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7688311688311689 [2022-12-06 18:23:11,358 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 7 predicate places. [2022-12-06 18:23:11,358 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 304 flow [2022-12-06 18:23:11,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 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) [2022-12-06 18:23:11,358 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:23:11,358 INFO L213 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] [2022-12-06 18:23:11,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 18:23:11,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:23:11,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:23:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1793206626, now seen corresponding path program 1 times [2022-12-06 18:23:11,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:23:11,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140933419] [2022-12-06 18:23:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:11,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:23:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:23:11,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140933419] [2022-12-06 18:23:11,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140933419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:23:11,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:23:11,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 18:23:11,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264756142] [2022-12-06 18:23:11,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:23:11,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 18:23:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:23:11,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 18:23:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 18:23:11,564 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 110 [2022-12-06 18:23:11,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-12-06 18:23:11,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:23:11,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 110 [2022-12-06 18:23:11,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:23:11,600 INFO L130 PetriNetUnfolder]: 8/141 cut-off events. [2022-12-06 18:23:11,600 INFO L131 PetriNetUnfolder]: For 93/101 co-relation queries the response was YES. [2022-12-06 18:23:11,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 141 events. 8/141 cut-off events. For 93/101 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 2/134 useless extension candidates. Maximal degree in co-relation 105. Up to 20 conditions per place. [2022-12-06 18:23:11,602 INFO L137 encePairwiseOnDemand]: 107/110 looper letters, 13 selfloop transitions, 2 changer transitions 10/106 dead transitions. [2022-12-06 18:23:11,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 106 transitions, 373 flow [2022-12-06 18:23:11,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 18:23:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 18:23:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2022-12-06 18:23:11,605 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8909090909090909 [2022-12-06 18:23:11,606 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 9 predicate places. [2022-12-06 18:23:11,606 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 106 transitions, 373 flow [2022-12-06 18:23:11,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-12-06 18:23:11,607 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:23:11,607 INFO L213 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] [2022-12-06 18:23:11,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 18:23:11,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:23:11,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:23:11,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1471828813, now seen corresponding path program 1 times [2022-12-06 18:23:11,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:23:11,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640409013] [2022-12-06 18:23:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:11,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:23:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:23:11,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:23:11,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640409013] [2022-12-06 18:23:11,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640409013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:23:11,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:23:11,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 18:23:11,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962169186] [2022-12-06 18:23:11,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:23:11,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:23:11,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:23:11,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:23:11,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:23:11,761 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2022-12-06 18:23:11,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 106 transitions, 373 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 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) [2022-12-06 18:23:11,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:23:11,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2022-12-06 18:23:11,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:23:11,856 INFO L130 PetriNetUnfolder]: 8/190 cut-off events. [2022-12-06 18:23:11,856 INFO L131 PetriNetUnfolder]: For 208/222 co-relation queries the response was YES. [2022-12-06 18:23:11,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 190 events. 8/190 cut-off events. For 208/222 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 420 event pairs, 0 based on Foata normal form. 2/179 useless extension candidates. Maximal degree in co-relation 159. Up to 28 conditions per place. [2022-12-06 18:23:11,858 INFO L137 encePairwiseOnDemand]: 102/110 looper letters, 23 selfloop transitions, 6 changer transitions 15/115 dead transitions. [2022-12-06 18:23:11,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 115 transitions, 501 flow [2022-12-06 18:23:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 18:23:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 18:23:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2022-12-06 18:23:11,861 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7935064935064935 [2022-12-06 18:23:11,862 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 15 predicate places. [2022-12-06 18:23:11,862 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 115 transitions, 501 flow [2022-12-06 18:23:11,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 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) [2022-12-06 18:23:11,862 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:23:11,862 INFO L213 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] [2022-12-06 18:23:11,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 18:23:11,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:23:11,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:23:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1649339748, now seen corresponding path program 1 times [2022-12-06 18:23:11,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:23:11,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233432457] [2022-12-06 18:23:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:11,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:23:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:12,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:23:12,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233432457] [2022-12-06 18:23:12,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233432457] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:23:12,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377937402] [2022-12-06 18:23:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:12,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:23:12,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:23:12,758 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) [2022-12-06 18:23:12,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 18:23:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:12,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-06 18:23:12,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:23:12,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:23:13,057 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-06 18:23:13,057 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 [2022-12-06 18:23:13,552 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 18 treesize of output 20 [2022-12-06 18:23:13,700 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-06 18:23:13,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-06 18:23:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:13,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:23:13,847 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:23:13,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2022-12-06 18:23:13,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-06 18:23:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:14,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377937402] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:23:14,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:23:14,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 48 [2022-12-06 18:23:14,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924840518] [2022-12-06 18:23:14,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:23:14,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-06 18:23:14,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:23:14,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-06 18:23:14,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2056, Unknown=12, NotChecked=0, Total=2256 [2022-12-06 18:23:14,733 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 110 [2022-12-06 18:23:14,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 501 flow. Second operand has 48 states, 48 states have (on average 42.708333333333336) internal successors, (2050), 48 states have internal predecessors, (2050), 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) [2022-12-06 18:23:14,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:23:14,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 110 [2022-12-06 18:23:14,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:23:20,687 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_~front~0 4)) (.cse0 (select |c_#valid| |c_ULTIMATE.start_main_~#t2~0#1.base|))) (and (= .cse0 1) (forall ((v_ArrVal_66 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_66) c_~queue~0.base) (+ c_~queue~0.offset .cse1)))) (or (and (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_#t~malloc16#1.base_6| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_#t~malloc16#1.base_6|) 0))) (= .cse1 (* c_~back~0 4))) (not (= .cse0 0))) (< 0 c_~back~0) (not (<= 0 c_~back~0))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= 5 c_~x~0) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0))) is different from false [2022-12-06 18:23:21,000 INFO L130 PetriNetUnfolder]: 89/706 cut-off events. [2022-12-06 18:23:21,000 INFO L131 PetriNetUnfolder]: For 1284/1308 co-relation queries the response was YES. [2022-12-06 18:23:21,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 706 events. 89/706 cut-off events. For 1284/1308 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4233 event pairs, 0 based on Foata normal form. 4/651 useless extension candidates. Maximal degree in co-relation 540. Up to 159 conditions per place. [2022-12-06 18:23:21,004 INFO L137 encePairwiseOnDemand]: 82/110 looper letters, 121 selfloop transitions, 46 changer transitions 87/288 dead transitions. [2022-12-06 18:23:21,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 288 transitions, 2054 flow [2022-12-06 18:23:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-12-06 18:23:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-12-06 18:23:21,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 3090 transitions. [2022-12-06 18:23:21,011 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.39564660691421255 [2022-12-06 18:23:21,013 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 85 predicate places. [2022-12-06 18:23:21,013 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 288 transitions, 2054 flow [2022-12-06 18:23:21,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 42.708333333333336) internal successors, (2050), 48 states have internal predecessors, (2050), 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) [2022-12-06 18:23:21,014 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:23:21,015 INFO L213 CegarLoopForPetriNet]: trace histogram [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] [2022-12-06 18:23:21,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 18:23:21,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:23:21,221 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:23:21,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:23:21,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1315238743, now seen corresponding path program 2 times [2022-12-06 18:23:21,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:23:21,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537776506] [2022-12-06 18:23:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:21,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:23:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:23:21,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:23:21,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537776506] [2022-12-06 18:23:21,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537776506] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:23:21,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603335771] [2022-12-06 18:23:21,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:23:21,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:23:21,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:23:21,344 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) [2022-12-06 18:23:21,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 18:23:21,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:23:21,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:23:21,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 18:23:21,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:23:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:21,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:23:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:21,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603335771] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:23:21,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:23:21,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 22 [2022-12-06 18:23:21,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694591687] [2022-12-06 18:23:21,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:23:21,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 18:23:21,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:23:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 18:23:21,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-12-06 18:23:21,978 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 110 [2022-12-06 18:23:21,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 288 transitions, 2054 flow. Second operand has 22 states, 22 states have (on average 80.95454545454545) internal successors, (1781), 22 states have internal predecessors, (1781), 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) [2022-12-06 18:23:21,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:23:21,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 110 [2022-12-06 18:23:21,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:23:22,361 INFO L130 PetriNetUnfolder]: 74/700 cut-off events. [2022-12-06 18:23:22,361 INFO L131 PetriNetUnfolder]: For 2023/2070 co-relation queries the response was YES. [2022-12-06 18:23:22,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 700 events. 74/700 cut-off events. For 2023/2070 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4109 event pairs, 0 based on Foata normal form. 30/672 useless extension candidates. Maximal degree in co-relation 559. Up to 147 conditions per place. [2022-12-06 18:23:22,364 INFO L137 encePairwiseOnDemand]: 95/110 looper letters, 38 selfloop transitions, 25 changer transitions 125/266 dead transitions. [2022-12-06 18:23:22,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 266 transitions, 2144 flow [2022-12-06 18:23:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-06 18:23:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-06 18:23:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1627 transitions. [2022-12-06 18:23:22,371 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7395454545454545 [2022-12-06 18:23:22,373 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 98 predicate places. [2022-12-06 18:23:22,373 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 266 transitions, 2144 flow [2022-12-06 18:23:22,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 80.95454545454545) internal successors, (1781), 22 states have internal predecessors, (1781), 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) [2022-12-06 18:23:22,374 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:23:22,374 INFO L213 CegarLoopForPetriNet]: trace histogram [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] [2022-12-06 18:23:22,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-06 18:23:22,579 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,SelfDestructingSolverStorable5 [2022-12-06 18:23:22,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:23:22,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:23:22,580 INFO L85 PathProgramCache]: Analyzing trace with hash -931086361, now seen corresponding path program 3 times [2022-12-06 18:23:22,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:23:22,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67137719] [2022-12-06 18:23:22,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:22,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:23:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:23,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:23:23,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67137719] [2022-12-06 18:23:23,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67137719] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:23:23,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390387993] [2022-12-06 18:23:23,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 18:23:23,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:23:23,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:23:23,460 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) [2022-12-06 18:23:23,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 18:23:23,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-06 18:23:23,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:23:23,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-06 18:23:23,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:23:24,287 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-06 18:23:24,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-06 18:23:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:24,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:23:24,457 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-06 18:23:24,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-12-06 18:23:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:25,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390387993] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:23:25,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:23:25,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 17] total 46 [2022-12-06 18:23:25,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872895174] [2022-12-06 18:23:25,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:23:25,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-06 18:23:25,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:23:25,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-06 18:23:25,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1788, Unknown=0, NotChecked=0, Total=2070 [2022-12-06 18:23:25,062 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 110 [2022-12-06 18:23:25,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 266 transitions, 2144 flow. Second operand has 46 states, 46 states have (on average 51.15217391304348) internal successors, (2353), 46 states have internal predecessors, (2353), 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) [2022-12-06 18:23:25,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:23:25,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 110 [2022-12-06 18:23:25,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:23:30,895 INFO L130 PetriNetUnfolder]: 236/2106 cut-off events. [2022-12-06 18:23:30,896 INFO L131 PetriNetUnfolder]: For 7234/7414 co-relation queries the response was YES. [2022-12-06 18:23:30,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6586 conditions, 2106 events. 236/2106 cut-off events. For 7234/7414 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 19425 event pairs, 0 based on Foata normal form. 48/1968 useless extension candidates. Maximal degree in co-relation 1310. Up to 457 conditions per place. [2022-12-06 18:23:30,902 INFO L137 encePairwiseOnDemand]: 80/110 looper letters, 121 selfloop transitions, 43 changer transitions 439/642 dead transitions. [2022-12-06 18:23:30,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 642 transitions, 7076 flow [2022-12-06 18:23:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-12-06 18:23:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2022-12-06 18:23:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 6027 transitions. [2022-12-06 18:23:30,908 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4682983682983683 [2022-12-06 18:23:30,908 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 214 predicate places. [2022-12-06 18:23:30,909 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 642 transitions, 7076 flow [2022-12-06 18:23:30,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 51.15217391304348) internal successors, (2353), 46 states have internal predecessors, (2353), 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) [2022-12-06 18:23:30,910 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:23:30,910 INFO L213 CegarLoopForPetriNet]: trace histogram [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] [2022-12-06 18:23:30,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-06 18:23:31,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:23:31,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:23:31,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:23:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash 820056531, now seen corresponding path program 4 times [2022-12-06 18:23:31,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:23:31,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492834122] [2022-12-06 18:23:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:31,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:23:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:31,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:23:31,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492834122] [2022-12-06 18:23:31,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492834122] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:23:31,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700522615] [2022-12-06 18:23:31,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 18:23:31,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:23:31,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:23:31,788 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) [2022-12-06 18:23:31,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 18:23:31,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 18:23:31,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:23:31,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-06 18:23:31,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:23:32,102 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-06 18:23:32,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-06 18:23:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-06 18:23:32,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:23:32,163 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-06 18:23:32,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-12-06 18:23:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-06 18:23:32,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700522615] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:23:32,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:23:32,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8, 8] total 25 [2022-12-06 18:23:32,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275955564] [2022-12-06 18:23:32,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:23:32,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-06 18:23:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:23:32,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-06 18:23:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2022-12-06 18:23:32,303 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 110 [2022-12-06 18:23:32,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 642 transitions, 7076 flow. Second operand has 25 states, 25 states have (on average 52.0) internal successors, (1300), 25 states have internal predecessors, (1300), 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) [2022-12-06 18:23:32,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:23:32,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 110 [2022-12-06 18:23:32,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:23:35,131 INFO L130 PetriNetUnfolder]: 303/2748 cut-off events. [2022-12-06 18:23:35,131 INFO L131 PetriNetUnfolder]: For 11985/12280 co-relation queries the response was YES. [2022-12-06 18:23:35,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9742 conditions, 2748 events. 303/2748 cut-off events. For 11985/12280 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 27268 event pairs, 0 based on Foata normal form. 73/2583 useless extension candidates. Maximal degree in co-relation 1971. Up to 657 conditions per place. [2022-12-06 18:23:35,139 INFO L137 encePairwiseOnDemand]: 85/110 looper letters, 106 selfloop transitions, 41 changer transitions 723/909 dead transitions. [2022-12-06 18:23:35,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 909 transitions, 11570 flow [2022-12-06 18:23:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-12-06 18:23:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2022-12-06 18:23:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 5022 transitions. [2022-12-06 18:23:35,144 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47066541705716963 [2022-12-06 18:23:35,144 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 310 predicate places. [2022-12-06 18:23:35,144 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 909 transitions, 11570 flow [2022-12-06 18:23:35,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 52.0) internal successors, (1300), 25 states have internal predecessors, (1300), 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) [2022-12-06 18:23:35,145 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:23:35,145 INFO L213 CegarLoopForPetriNet]: trace histogram [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] [2022-12-06 18:23:35,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 18:23:35,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:23:35,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:23:35,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:23:35,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1927563167, now seen corresponding path program 5 times [2022-12-06 18:23:35,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:23:35,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015102512] [2022-12-06 18:23:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:35,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:23:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:36,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:23:36,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015102512] [2022-12-06 18:23:36,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015102512] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:23:36,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783370421] [2022-12-06 18:23:36,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 18:23:36,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:23:36,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:23:36,245 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) [2022-12-06 18:23:36,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 18:23:36,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-06 18:23:36,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:23:36,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-06 18:23:36,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:23:36,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:23:36,455 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-06 18:23:36,456 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 [2022-12-06 18:23:36,989 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 18 treesize of output 20 [2022-12-06 18:23:37,143 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-06 18:23:37,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-06 18:23:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:37,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:23:37,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:23:37,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2022-12-06 18:23:37,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-12-06 18:23:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:38,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783370421] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:23:38,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:23:38,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 62 [2022-12-06 18:23:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45148818] [2022-12-06 18:23:38,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:23:38,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-12-06 18:23:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:23:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-12-06 18:23:38,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=3520, Unknown=10, NotChecked=0, Total=3782 [2022-12-06 18:23:38,707 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 110 [2022-12-06 18:23:38,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 909 transitions, 11570 flow. Second operand has 62 states, 62 states have (on average 41.564516129032256) internal successors, (2577), 62 states have internal predecessors, (2577), 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) [2022-12-06 18:23:38,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:23:38,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 110 [2022-12-06 18:23:38,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:23:56,229 INFO L130 PetriNetUnfolder]: 387/3314 cut-off events. [2022-12-06 18:23:56,229 INFO L131 PetriNetUnfolder]: For 17677/18039 co-relation queries the response was YES. [2022-12-06 18:23:56,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13363 conditions, 3314 events. 387/3314 cut-off events. For 17677/18039 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 33615 event pairs, 0 based on Foata normal form. 71/3104 useless extension candidates. Maximal degree in co-relation 3469. Up to 859 conditions per place. [2022-12-06 18:23:56,237 INFO L137 encePairwiseOnDemand]: 80/110 looper letters, 89 selfloop transitions, 26 changer transitions 955/1103 dead transitions. [2022-12-06 18:23:56,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 1103 transitions, 16298 flow [2022-12-06 18:23:56,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-12-06 18:23:56,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2022-12-06 18:23:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 5049 transitions. [2022-12-06 18:23:56,242 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2022-12-06 18:23:56,242 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 428 predicate places. [2022-12-06 18:23:56,243 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 1103 transitions, 16298 flow [2022-12-06 18:23:56,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 41.564516129032256) internal successors, (2577), 62 states have internal predecessors, (2577), 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) [2022-12-06 18:23:56,243 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:23:56,244 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-12-06 18:23:56,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 18:23:56,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:23:56,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:23:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:23:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash -75559970, now seen corresponding path program 6 times [2022-12-06 18:23:56,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:23:56,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108304635] [2022-12-06 18:23:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:23:56,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:23:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:23:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:23:57,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:23:57,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108304635] [2022-12-06 18:23:57,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108304635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:23:57,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688990325] [2022-12-06 18:23:57,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 18:23:57,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:23:57,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:23:57,284 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) [2022-12-06 18:23:57,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 18:23:57,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-06 18:23:57,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:23:57,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-06 18:23:57,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:23:57,599 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-06 18:23:57,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-06 18:23:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-06 18:23:57,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:23:57,754 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-06 18:23:57,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-12-06 18:23:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-06 18:23:57,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688990325] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:23:57,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:23:57,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 9, 9] total 32 [2022-12-06 18:23:57,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211871621] [2022-12-06 18:23:57,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:23:57,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-06 18:23:57,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:23:57,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-06 18:23:57,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2022-12-06 18:23:57,931 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 110 [2022-12-06 18:23:57,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 1103 transitions, 16298 flow. Second operand has 32 states, 32 states have (on average 52.375) internal successors, (1676), 32 states have internal predecessors, (1676), 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) [2022-12-06 18:23:57,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:23:57,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 110 [2022-12-06 18:23:57,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:24:03,484 INFO L130 PetriNetUnfolder]: 646/5264 cut-off events. [2022-12-06 18:24:03,484 INFO L131 PetriNetUnfolder]: For 35123/35725 co-relation queries the response was YES. [2022-12-06 18:24:03,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23649 conditions, 5264 events. 646/5264 cut-off events. For 35123/35725 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 60560 event pairs, 0 based on Foata normal form. 102/4920 useless extension candidates. Maximal degree in co-relation 4350. Up to 1348 conditions per place. [2022-12-06 18:24:03,500 INFO L137 encePairwiseOnDemand]: 83/110 looper letters, 63 selfloop transitions, 36 changer transitions 1566/1704 dead transitions. [2022-12-06 18:24:03,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 1704 transitions, 28943 flow [2022-12-06 18:24:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-12-06 18:24:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2022-12-06 18:24:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 6032 transitions. [2022-12-06 18:24:03,504 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4686868686868687 [2022-12-06 18:24:03,505 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 544 predicate places. [2022-12-06 18:24:03,505 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 1704 transitions, 28943 flow [2022-12-06 18:24:03,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 52.375) internal successors, (1676), 32 states have internal predecessors, (1676), 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) [2022-12-06 18:24:03,505 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:24:03,506 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-12-06 18:24:03,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-06 18:24:03,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:24:03,710 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:24:03,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:24:03,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2118039292, now seen corresponding path program 7 times [2022-12-06 18:24:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:24:03,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299661346] [2022-12-06 18:24:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:24:03,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:24:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:24:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:24:04,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:24:04,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299661346] [2022-12-06 18:24:04,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299661346] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:24:04,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109697348] [2022-12-06 18:24:04,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 18:24:04,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:24:04,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:24:04,894 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) [2022-12-06 18:24:04,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 18:24:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:24:04,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-06 18:24:04,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:24:04,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:24:05,097 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-06 18:24:05,097 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 [2022-12-06 18:24:05,654 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 19 treesize of output 21 [2022-12-06 18:24:05,766 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 23 treesize of output 7 [2022-12-06 18:24:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:24:05,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:24:05,921 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:24:05,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2022-12-06 18:24:05,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-12-06 18:24:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:24:07,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109697348] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:24:07,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:24:07,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 68 [2022-12-06 18:24:07,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278846571] [2022-12-06 18:24:07,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:24:07,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-12-06 18:24:07,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:24:07,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-12-06 18:24:07,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=4193, Unknown=7, NotChecked=0, Total=4556 [2022-12-06 18:24:07,046 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 110 [2022-12-06 18:24:07,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 1704 transitions, 28943 flow. Second operand has 68 states, 68 states have (on average 41.55882352941177) internal successors, (2826), 68 states have internal predecessors, (2826), 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) [2022-12-06 18:24:07,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:24:07,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 110 [2022-12-06 18:24:07,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:24:23,762 INFO L130 PetriNetUnfolder]: 1645/12445 cut-off events. [2022-12-06 18:24:23,762 INFO L131 PetriNetUnfolder]: For 103307/104972 co-relation queries the response was YES. [2022-12-06 18:24:23,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61840 conditions, 12445 events. 1645/12445 cut-off events. For 103307/104972 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 168963 event pairs, 0 based on Foata normal form. 277/11663 useless extension candidates. Maximal degree in co-relation 9854. Up to 3526 conditions per place. [2022-12-06 18:24:23,796 INFO L137 encePairwiseOnDemand]: 81/110 looper letters, 190 selfloop transitions, 83 changer transitions 3661/3967 dead transitions. [2022-12-06 18:24:23,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 3967 transitions, 76245 flow [2022-12-06 18:24:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-12-06 18:24:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2022-12-06 18:24:23,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 7173 transitions. [2022-12-06 18:24:23,802 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.385852608929532 [2022-12-06 18:24:23,803 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 712 predicate places. [2022-12-06 18:24:23,803 INFO L495 AbstractCegarLoop]: Abstraction has has 810 places, 3967 transitions, 76245 flow [2022-12-06 18:24:23,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 41.55882352941177) internal successors, (2826), 68 states have internal predecessors, (2826), 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) [2022-12-06 18:24:23,804 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:24:23,804 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-06 18:24:23,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-06 18:24:24,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:24:24,019 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:24:24,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:24:24,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1351455673, now seen corresponding path program 8 times [2022-12-06 18:24:24,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:24:24,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825898618] [2022-12-06 18:24:24,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:24:24,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:24:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:24:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-06 18:24:24,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:24:24,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825898618] [2022-12-06 18:24:24,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825898618] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:24:24,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753610229] [2022-12-06 18:24:24,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:24:24,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:24:24,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:24:24,219 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) [2022-12-06 18:24:24,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 18:24:24,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:24:24,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:24:24,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-06 18:24:24,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:24:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-06 18:24:24,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:24:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-06 18:24:24,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753610229] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:24:24,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:24:24,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 11 [2022-12-06 18:24:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708194841] [2022-12-06 18:24:24,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:24:24,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-06 18:24:24,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:24:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-06 18:24:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-06 18:24:24,563 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2022-12-06 18:24:24,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 3967 transitions, 76245 flow. Second operand has 11 states, 11 states have (on average 92.54545454545455) internal successors, (1018), 11 states have internal predecessors, (1018), 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) [2022-12-06 18:24:24,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:24:24,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2022-12-06 18:24:24,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:24:28,932 INFO L130 PetriNetUnfolder]: 1848/14185 cut-off events. [2022-12-06 18:24:28,932 INFO L131 PetriNetUnfolder]: For 139434/141358 co-relation queries the response was YES. [2022-12-06 18:24:28,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73226 conditions, 14185 events. 1848/14185 cut-off events. For 139434/141358 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 198080 event pairs, 1 based on Foata normal form. 171/13130 useless extension candidates. Maximal degree in co-relation 11352. Up to 4057 conditions per place. [2022-12-06 18:24:28,969 INFO L137 encePairwiseOnDemand]: 105/110 looper letters, 135 selfloop transitions, 58 changer transitions 3786/4167 dead transitions. [2022-12-06 18:24:28,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 4167 transitions, 84852 flow [2022-12-06 18:24:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:24:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:24:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 568 transitions. [2022-12-06 18:24:28,970 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8606060606060606 [2022-12-06 18:24:28,971 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 717 predicate places. [2022-12-06 18:24:28,971 INFO L495 AbstractCegarLoop]: Abstraction has has 815 places, 4167 transitions, 84852 flow [2022-12-06 18:24:28,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 92.54545454545455) internal successors, (1018), 11 states have internal predecessors, (1018), 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) [2022-12-06 18:24:28,971 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:24:28,971 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:24:28,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-06 18:24:29,176 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,SelfDestructingSolverStorable11 [2022-12-06 18:24:29,176 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:24:29,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:24:29,177 INFO L85 PathProgramCache]: Analyzing trace with hash -667760192, now seen corresponding path program 9 times [2022-12-06 18:24:29,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:24:29,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586506203] [2022-12-06 18:24:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:24:29,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:24:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:24:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:24:29,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:24:29,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586506203] [2022-12-06 18:24:29,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586506203] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:24:29,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82305344] [2022-12-06 18:24:29,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 18:24:29,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:24:29,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:24:29,957 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) [2022-12-06 18:24:29,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 18:24:30,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-06 18:24:30,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:24:30,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-06 18:24:30,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:24:30,652 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 15 treesize of output 11 [2022-12-06 18:24:30,885 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 6 treesize of output 5 [2022-12-06 18:24:31,028 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 6 treesize of output 5 [2022-12-06 18:24:31,337 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-06 18:24:31,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-06 18:24:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:24:31,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:24:37,896 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:24:37,896 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-12-06 18:24:37,906 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-06 18:24:37,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 131 [2022-12-06 18:24:37,913 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-06 18:24:37,914 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 124 treesize of output 100 [2022-12-06 18:24:37,920 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-06 18:24:37,921 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 79 treesize of output 67 [2022-12-06 18:24:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:24:44,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82305344] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:24:44,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:24:44,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 27] total 73 [2022-12-06 18:24:44,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117529463] [2022-12-06 18:24:44,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:24:44,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-12-06 18:24:44,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:24:44,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-12-06 18:24:44,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=573, Invalid=4657, Unknown=26, NotChecked=0, Total=5256 [2022-12-06 18:24:44,822 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 110 [2022-12-06 18:24:44,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 815 places, 4167 transitions, 84852 flow. Second operand has 73 states, 73 states have (on average 43.38356164383562) internal successors, (3167), 73 states have internal predecessors, (3167), 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) [2022-12-06 18:24:44,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:24:44,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 110 [2022-12-06 18:24:44,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:24:53,691 WARN L233 SmtUtils]: Spent 8.64s on a formula simplification that was a NOOP. DAG size: 149 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:24:56,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:25:14,588 WARN L233 SmtUtils]: Spent 16.54s on a formula simplification. DAG size of input: 103 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:25:29,068 WARN L233 SmtUtils]: Spent 14.37s on a formula simplification. DAG size of input: 109 DAG size of output: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:25:41,606 WARN L233 SmtUtils]: Spent 12.42s on a formula simplification. DAG size of input: 115 DAG size of output: 104 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:25:54,519 WARN L233 SmtUtils]: Spent 12.31s on a formula simplification. DAG size of input: 100 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:26:08,939 WARN L233 SmtUtils]: Spent 14.32s on a formula simplification. DAG size of input: 106 DAG size of output: 94 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:26:21,391 WARN L233 SmtUtils]: Spent 12.34s on a formula simplification. DAG size of input: 112 DAG size of output: 100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:26:44,109 INFO L130 PetriNetUnfolder]: 2151/17476 cut-off events. [2022-12-06 18:26:44,109 INFO L131 PetriNetUnfolder]: For 200558/203602 co-relation queries the response was YES. [2022-12-06 18:26:44,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96162 conditions, 17476 events. 2151/17476 cut-off events. For 200558/203602 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 253423 event pairs, 1 based on Foata normal form. 571/16522 useless extension candidates. Maximal degree in co-relation 22274. Up to 5021 conditions per place. [2022-12-06 18:26:44,149 INFO L137 encePairwiseOnDemand]: 77/110 looper letters, 200 selfloop transitions, 55 changer transitions 5062/5353 dead transitions. [2022-12-06 18:26:44,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 972 places, 5353 transitions, 117826 flow [2022-12-06 18:26:44,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-12-06 18:26:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2022-12-06 18:26:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 7887 transitions. [2022-12-06 18:26:44,155 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.40508474576271186 [2022-12-06 18:26:44,155 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 874 predicate places. [2022-12-06 18:26:44,155 INFO L495 AbstractCegarLoop]: Abstraction has has 972 places, 5353 transitions, 117826 flow [2022-12-06 18:26:44,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 43.38356164383562) internal successors, (3167), 73 states have internal predecessors, (3167), 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) [2022-12-06 18:26:44,156 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:26:44,156 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:26:44,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-06 18:26:44,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-06 18:26:44,361 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:26:44,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:26:44,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1265045290, now seen corresponding path program 10 times [2022-12-06 18:26:44,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:26:44,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191435225] [2022-12-06 18:26:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:26:44,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:26:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:26:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:26:45,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:26:45,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191435225] [2022-12-06 18:26:45,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191435225] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:26:45,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407612136] [2022-12-06 18:26:45,119 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 18:26:45,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:26:45,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:26:45,121 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) [2022-12-06 18:26:45,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-06 18:26:45,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 18:26:45,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:26:45,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-06 18:26:45,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:26:45,522 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-06 18:26:45,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-06 18:26:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-06 18:26:45,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:26:45,620 INFO L321 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-12-06 18:26:45,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-12-06 18:26:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-06 18:26:45,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407612136] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:26:45,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:26:45,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 10, 10] total 32 [2022-12-06 18:26:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248250166] [2022-12-06 18:26:45,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:26:45,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-06 18:26:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:26:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-06 18:26:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2022-12-06 18:26:45,807 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 110 [2022-12-06 18:26:45,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 5353 transitions, 117826 flow. Second operand has 32 states, 32 states have (on average 51.4375) internal successors, (1646), 32 states have internal predecessors, (1646), 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) [2022-12-06 18:26:45,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:26:45,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 110 [2022-12-06 18:26:45,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:27:03,688 INFO L130 PetriNetUnfolder]: 1858/13897 cut-off events. [2022-12-06 18:27:03,688 INFO L131 PetriNetUnfolder]: For 187568/189846 co-relation queries the response was YES. [2022-12-06 18:27:03,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84307 conditions, 13897 events. 1858/13897 cut-off events. For 187568/189846 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 187865 event pairs, 0 based on Foata normal form. 468/13184 useless extension candidates. Maximal degree in co-relation 20455. Up to 4373 conditions per place. [2022-12-06 18:27:03,726 INFO L137 encePairwiseOnDemand]: 85/110 looper letters, 135 selfloop transitions, 53 changer transitions 4281/4508 dead transitions. [2022-12-06 18:27:03,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1146 places, 4508 transitions, 107418 flow [2022-12-06 18:27:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2022-12-06 18:27:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2022-12-06 18:27:03,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 11860 transitions. [2022-12-06 18:27:03,733 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4708217546645494 [2022-12-06 18:27:03,733 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 1048 predicate places. [2022-12-06 18:27:03,733 INFO L495 AbstractCegarLoop]: Abstraction has has 1146 places, 4508 transitions, 107418 flow [2022-12-06 18:27:03,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 51.4375) internal successors, (1646), 32 states have internal predecessors, (1646), 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) [2022-12-06 18:27:03,734 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:27:03,734 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:27:03,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-06 18:27:03,934 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,SelfDestructingSolverStorable13 [2022-12-06 18:27:03,935 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:27:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:27:03,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1884442641, now seen corresponding path program 11 times [2022-12-06 18:27:03,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:27:03,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319760798] [2022-12-06 18:27:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:27:03,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:27:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:27:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:27:05,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:27:05,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319760798] [2022-12-06 18:27:05,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319760798] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:27:05,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005007907] [2022-12-06 18:27:05,141 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 18:27:05,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:27:05,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:27:05,142 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) [2022-12-06 18:27:05,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-06 18:27:05,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-06 18:27:05,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:27:05,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-06 18:27:05,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:27:05,773 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-06 18:27:05,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-06 18:27:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-06 18:27:05,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:27:05,896 INFO L321 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-12-06 18:27:05,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2022-12-06 18:27:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-06 18:27:06,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005007907] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:27:06,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:27:06,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 16, 11] total 41 [2022-12-06 18:27:06,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059928292] [2022-12-06 18:27:06,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:27:06,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-06 18:27:06,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:27:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-06 18:27:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1504, Unknown=0, NotChecked=0, Total=1640 [2022-12-06 18:27:06,088 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 110 [2022-12-06 18:27:06,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1146 places, 4508 transitions, 107418 flow. Second operand has 41 states, 41 states have (on average 51.1219512195122) internal successors, (2096), 41 states have internal predecessors, (2096), 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) [2022-12-06 18:27:06,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:27:06,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 110 [2022-12-06 18:27:06,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:27:31,315 INFO L130 PetriNetUnfolder]: 3658/24841 cut-off events. [2022-12-06 18:27:31,315 INFO L131 PetriNetUnfolder]: For 394160/398872 co-relation queries the response was YES. [2022-12-06 18:27:31,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166609 conditions, 24841 events. 3658/24841 cut-off events. For 394160/398872 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 360724 event pairs, 0 based on Foata normal form. 634/23414 useless extension candidates. Maximal degree in co-relation 35850. Up to 8798 conditions per place. [2022-12-06 18:27:31,406 INFO L137 encePairwiseOnDemand]: 85/110 looper letters, 648 selfloop transitions, 282 changer transitions 7177/8146 dead transitions. [2022-12-06 18:27:31,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1448 places, 8146 transitions, 211611 flow [2022-12-06 18:27:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2022-12-06 18:27:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2022-12-06 18:27:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 15740 transitions. [2022-12-06 18:27:31,419 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47224722472247227 [2022-12-06 18:27:31,419 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 1350 predicate places. [2022-12-06 18:27:31,420 INFO L495 AbstractCegarLoop]: Abstraction has has 1448 places, 8146 transitions, 211611 flow [2022-12-06 18:27:31,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 51.1219512195122) internal successors, (2096), 41 states have internal predecessors, (2096), 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) [2022-12-06 18:27:31,420 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:27:31,420 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:27:31,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-06 18:27:31,625 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,SelfDestructingSolverStorable14 [2022-12-06 18:27:31,626 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:27:31,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:27:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1402463333, now seen corresponding path program 12 times [2022-12-06 18:27:31,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:27:31,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272069139] [2022-12-06 18:27:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:27:31,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:27:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:27:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:27:32,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:27:32,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272069139] [2022-12-06 18:27:32,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272069139] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:27:32,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650600879] [2022-12-06 18:27:32,956 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 18:27:32,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:27:32,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:27:32,957 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:27:32,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-06 18:27:33,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-06 18:27:33,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:27:33,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-06 18:27:33,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:27:33,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:27:33,577 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 18 treesize of output 20 [2022-12-06 18:27:33,805 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-06 18:27:33,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-06 18:27:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-06 18:27:33,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:27:34,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:27:34,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2022-12-06 18:27:34,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-12-06 18:27:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-06 18:27:35,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650600879] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:27:35,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:27:35,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 18, 18] total 55 [2022-12-06 18:27:35,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406877336] [2022-12-06 18:27:35,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:27:35,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-06 18:27:35,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:27:35,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-06 18:27:35,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=2651, Unknown=0, NotChecked=0, Total=2970 [2022-12-06 18:27:35,095 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 110 [2022-12-06 18:27:35,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1448 places, 8146 transitions, 211611 flow. Second operand has 55 states, 55 states have (on average 45.872727272727275) internal successors, (2523), 55 states have internal predecessors, (2523), 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) [2022-12-06 18:27:35,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:27:35,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 110 [2022-12-06 18:27:35,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:27:47,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:27:50,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:27:51,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:27:53,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:27:55,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:27:57,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:27:59,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:28:01,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:28:03,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:28:05,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:28:07,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:28:09,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:28:16,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:28:22,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:28:25,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:28:30,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:28:32,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:28:36,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:28:45,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:28:50,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:28:52,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:28:54,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:29:10,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-06 18:29:23,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:29:29,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:29:54,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:30:01,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:30:27,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:30:30,256 INFO L130 PetriNetUnfolder]: 6797/44994 cut-off events. [2022-12-06 18:30:30,256 INFO L131 PetriNetUnfolder]: For 847011/856268 co-relation queries the response was YES. [2022-12-06 18:30:30,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322132 conditions, 44994 events. 6797/44994 cut-off events. For 847011/856268 co-relation queries the response was YES. Maximal size of possible extension queue 2034. Compared 734227 event pairs, 0 based on Foata normal form. 1300/42571 useless extension candidates. Maximal degree in co-relation 70009. Up to 16829 conditions per place. [2022-12-06 18:30:30,388 INFO L137 encePairwiseOnDemand]: 81/110 looper letters, 84 selfloop transitions, 36 changer transitions 14446/14602 dead transitions. [2022-12-06 18:30:30,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1705 places, 14602 transitions, 409922 flow [2022-12-06 18:30:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2022-12-06 18:30:30,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2022-12-06 18:30:30,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 11988 transitions. [2022-12-06 18:30:30,394 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.42241014799154336 [2022-12-06 18:30:30,395 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 1607 predicate places. [2022-12-06 18:30:30,395 INFO L495 AbstractCegarLoop]: Abstraction has has 1705 places, 14602 transitions, 409922 flow [2022-12-06 18:30:30,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 45.872727272727275) internal successors, (2523), 55 states have internal predecessors, (2523), 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) [2022-12-06 18:30:30,396 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:30,396 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:30:30,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-06 18:30:30,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-06 18:30:30,601 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1488245406, now seen corresponding path program 13 times [2022-12-06 18:30:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:30,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125585218] [2022-12-06 18:30:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 18 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:31,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:31,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125585218] [2022-12-06 18:30:31,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125585218] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:30:31,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148318797] [2022-12-06 18:30:31,978 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 18:30:31,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:31,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:30:31,979 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:30:31,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-06 18:30:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:32,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-06 18:30:32,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:30:32,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:30:32,219 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-06 18:30:32,219 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 [2022-12-06 18:30:33,608 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 18 treesize of output 20 [2022-12-06 18:30:33,920 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-06 18:30:33,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-06 18:30:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 18 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:33,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:30:34,083 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_457 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_457) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2022-12-06 18:30:34,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:34,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2022-12-06 18:30:34,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-12-06 18:30:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 3 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:37,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148318797] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:30:37,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:30:37,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 90 [2022-12-06 18:30:37,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980998295] [2022-12-06 18:30:37,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:30:37,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-12-06 18:30:37,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-12-06 18:30:37,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=7194, Unknown=1, NotChecked=174, Total=8010 [2022-12-06 18:30:37,050 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 110 [2022-12-06 18:30:37,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1705 places, 14602 transitions, 409922 flow. Second operand has 90 states, 90 states have (on average 42.333333333333336) internal successors, (3810), 90 states have internal predecessors, (3810), 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) [2022-12-06 18:30:37,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:37,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 110 [2022-12-06 18:30:37,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 18:36:55,617 WARN L249 SmtUtils]: Removed 9 from assertion stack [2022-12-06 18:36:55,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 415 states. [2022-12-06 18:36:55,619 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 18:36:55,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-06 18:36:55,631 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 [2022-12-06 18:36:55,631 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 18:36:55,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-06 18:36:55,820 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 85 for 107ms.. [2022-12-06 18:36:55,821 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 18:36:55,821 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 18:36:55,821 INFO L458 BasicCegarLoop]: Path program histogram: [13, 1, 1, 1, 1] [2022-12-06 18:36:55,824 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 18:36:55,824 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 18:36:55,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:36:55 BasicIcfg [2022-12-06 18:36:55,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 18:36:55,826 INFO L158 Benchmark]: Toolchain (without parser) took 826167.17ms. Allocated memory was 210.8MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 186.9MB in the beginning and 293.4MB in the end (delta: -106.5MB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2022-12-06 18:36:55,826 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 210.8MB. Free memory is still 186.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 18:36:55,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.85ms. Allocated memory is still 210.8MB. Free memory was 186.9MB in the beginning and 174.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-06 18:36:55,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.64ms. Allocated memory is still 210.8MB. Free memory was 174.3MB in the beginning and 172.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 18:36:55,827 INFO L158 Benchmark]: Boogie Preprocessor took 30.73ms. Allocated memory is still 210.8MB. Free memory was 172.2MB in the beginning and 171.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 18:36:55,827 INFO L158 Benchmark]: RCFGBuilder took 476.19ms. Allocated memory is still 210.8MB. Free memory was 170.6MB in the beginning and 150.7MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-06 18:36:55,827 INFO L158 Benchmark]: TraceAbstraction took 825430.77ms. Allocated memory was 210.8MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 150.2MB in the beginning and 293.4MB in the end (delta: -143.2MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2022-12-06 18:36:55,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 210.8MB. Free memory is still 186.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.85ms. Allocated memory is still 210.8MB. Free memory was 186.9MB in the beginning and 174.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.64ms. Allocated memory is still 210.8MB. Free memory was 174.3MB in the beginning and 172.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.73ms. Allocated memory is still 210.8MB. Free memory was 172.2MB in the beginning and 171.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 476.19ms. Allocated memory is still 210.8MB. Free memory was 170.6MB in the beginning and 150.7MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 825430.77ms. Allocated memory was 210.8MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 150.2MB in the beginning and 293.4MB in the end (delta: -143.2MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 86]: 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 85 for 107ms.. - TimeoutResultAtElement [Line: 81]: 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 85 for 107ms.. - TimeoutResultAtElement [Line: 80]: 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 85 for 107ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 118 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 825.4s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 776.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 141 mSolverCounterUnknown, 30289 SdHoareTripleChecker+Valid, 80.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30289 mSDsluCounter, 13523 SdHoareTripleChecker+Invalid, 78.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 529 IncrementalHoareTripleChecker+Unchecked, 12929 mSDsCounter, 2225 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34433 IncrementalHoareTripleChecker+Invalid, 37328 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2225 mSolverCounterUnsat, 594 mSDtfsCounter, 34433 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5244 GetRequests, 2596 SyntacticMatches, 25 SemanticMatches, 2622 ConstructedPredicates, 2 IntricatePredicates, 6 DeprecatedPredicates, 269738 ImplicationChecksByTransitivity, 317.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=409922occurred in iteration=16, InterpolantAutomatonStates: 1702, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 43.9s InterpolantComputationTime, 3223 NumberOfCodeBlocks, 3188 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 4632 ConstructedInterpolants, 350 QuantifiedInterpolants, 56638 SizeOfPredicates, 259 NumberOfNonLiveVariables, 3558 ConjunctsInSsa, 445 ConjunctsInUnsatCore, 43 InterpolantComputations, 4 PerfectInterpolantSequences, 464/1605 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