/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 16:42:44,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 16:42:44,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 16:42:44,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 16:42:44,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 16:42:44,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 16:42:44,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 16:42:44,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 16:42:44,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 16:42:44,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 16:42:44,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 16:42:44,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 16:42:44,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 16:42:44,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 16:42:44,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 16:42:44,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 16:42:44,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 16:42:44,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 16:42:44,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 16:42:44,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 16:42:44,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 16:42:44,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 16:42:44,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 16:42:44,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 16:42:44,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 16:42:44,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 16:42:44,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 16:42:44,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 16:42:44,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 16:42:44,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 16:42:44,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 16:42:44,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 16:42:44,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 16:42:44,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 16:42:44,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 16:42:44,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 16:42:44,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 16:42:44,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 16:42:44,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 16:42:44,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 16:42:44,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 16:42:44,825 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-SemanticLbe.epf [2022-12-12 16:42:44,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 16:42:44,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 16:42:44,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 16:42:44,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 16:42:44,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 16:42:44,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 16:42:44,858 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 16:42:44,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 16:42:44,858 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 16:42:44,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 16:42:44,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 16:42:44,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 16:42:44,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 16:42:44,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 16:42:44,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 16:42:44,859 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 16:42:44,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 16:42:44,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 16:42:44,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 16:42:44,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 16:42:44,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 16:42:44,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 16:42:44,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 16:42:44,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 16:42:44,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 16:42:44,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 16:42:44,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 16:42:44,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 16:42:44,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 16:42:44,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 16:42:44,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 16:42:45,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 16:42:45,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 16:42:45,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 16:42:45,174 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 16:42:45,174 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 16:42:45,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2022-12-12 16:42:46,460 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 16:42:46,698 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 16:42:46,699 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2022-12-12 16:42:46,713 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade233fd0/a846a4018d2848eb9651671aaa21713a/FLAGb43625b53 [2022-12-12 16:42:46,729 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade233fd0/a846a4018d2848eb9651671aaa21713a [2022-12-12 16:42:46,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 16:42:46,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 16:42:46,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 16:42:46,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 16:42:46,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 16:42:46,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 04:42:46" (1/1) ... [2022-12-12 16:42:46,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f5bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:46, skipping insertion in model container [2022-12-12 16:42:46,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 04:42:46" (1/1) ... [2022-12-12 16:42:46,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 16:42:46,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 16:42:47,223 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-12-12 16:42:47,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 16:42:47,245 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 16:42:47,279 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-12-12 16:42:47,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 16:42:47,330 INFO L208 MainTranslator]: Completed translation [2022-12-12 16:42:47,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47 WrapperNode [2022-12-12 16:42:47,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 16:42:47,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 16:42:47,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 16:42:47,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 16:42:47,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,396 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-12-12 16:42:47,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 16:42:47,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 16:42:47,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 16:42:47,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 16:42:47,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,435 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 16:42:47,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 16:42:47,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 16:42:47,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 16:42:47,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (1/1) ... [2022-12-12 16:42:47,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 16:42:47,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:42:47,476 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) [2022-12-12 16:42:47,500 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 [2022-12-12 16:42:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 16:42:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 16:42:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-12 16:42:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 16:42:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 16:42:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 16:42:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 16:42:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 16:42:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 16:42:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 16:42:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 16:42:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 16:42:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 16:42:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 16:42:47,520 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 16:42:47,721 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 16:42:47,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 16:42:47,905 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 16:42:47,911 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 16:42:47,911 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-12 16:42:47,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 04:42:47 BoogieIcfgContainer [2022-12-12 16:42:47,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 16:42:47,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 16:42:47,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 16:42:47,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 16:42:47,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 04:42:46" (1/3) ... [2022-12-12 16:42:47,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f07d488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 04:42:47, skipping insertion in model container [2022-12-12 16:42:47,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:42:47" (2/3) ... [2022-12-12 16:42:47,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f07d488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 04:42:47, skipping insertion in model container [2022-12-12 16:42:47,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 04:42:47" (3/3) ... [2022-12-12 16:42:47,941 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2022-12-12 16:42:47,956 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 16:42:47,956 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 16:42:47,957 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 16:42:48,059 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 16:42:48,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 131 transitions, 278 flow [2022-12-12 16:42:48,148 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2022-12-12 16:42:48,148 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 16:42:48,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 10/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 82. Up to 3 conditions per place. [2022-12-12 16:42:48,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 131 transitions, 278 flow [2022-12-12 16:42:48,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 118 transitions, 248 flow [2022-12-12 16:42:48,163 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 16:42:48,177 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 118 transitions, 248 flow [2022-12-12 16:42:48,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 118 transitions, 248 flow [2022-12-12 16:42:48,229 INFO L130 PetriNetUnfolder]: 8/118 cut-off events. [2022-12-12 16:42:48,229 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 16:42:48,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 8/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2022-12-12 16:42:48,233 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 118 transitions, 248 flow [2022-12-12 16:42:48,233 INFO L226 LiptonReduction]: Number of co-enabled transitions 1922 [2022-12-12 16:42:54,882 INFO L241 LiptonReduction]: Total number of compositions: 93 [2022-12-12 16:42:54,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 16:42:54,899 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;@a31ea81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 16:42:54,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 16:42:54,910 INFO L130 PetriNetUnfolder]: 6/30 cut-off events. [2022-12-12 16:42:54,910 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 16:42:54,910 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:54,911 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:54,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash 228985984, now seen corresponding path program 1 times [2022-12-12 16:42:54,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:54,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348761804] [2022-12-12 16:42:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:54,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:42:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:55,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348761804] [2022-12-12 16:42:55,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348761804] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:55,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:55,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 16:42:55,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407120542] [2022-12-12 16:42:55,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:55,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 16:42:55,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:55,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 16:42:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 16:42:55,214 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2022-12-12 16:42:55,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-12-12 16:42:55,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:55,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2022-12-12 16:42:55,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:55,350 INFO L130 PetriNetUnfolder]: 189/410 cut-off events. [2022-12-12 16:42:55,350 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-12 16:42:55,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 410 events. 189/410 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1851 event pairs, 72 based on Foata normal form. 24/368 useless extension candidates. Maximal degree in co-relation 672. Up to 194 conditions per place. [2022-12-12 16:42:55,354 INFO L137 encePairwiseOnDemand]: 26/31 looper letters, 32 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-12-12 16:42:55,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 167 flow [2022-12-12 16:42:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 16:42:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 16:42:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2022-12-12 16:42:55,363 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2022-12-12 16:42:55,365 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 74 flow. Second operand 3 states and 63 transitions. [2022-12-12 16:42:55,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 167 flow [2022-12-12 16:42:55,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 157 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-12 16:42:55,369 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 74 flow [2022-12-12 16:42:55,371 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2022-12-12 16:42:55,373 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2022-12-12 16:42:55,373 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 74 flow [2022-12-12 16:42:55,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-12-12 16:42:55,374 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:55,374 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:55,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 16:42:55,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:55,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:55,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1986141756, now seen corresponding path program 1 times [2022-12-12 16:42:55,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:55,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083039772] [2022-12-12 16:42:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:55,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:42:55,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:55,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083039772] [2022-12-12 16:42:55,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083039772] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:55,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:55,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 16:42:55,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85602038] [2022-12-12 16:42:55,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:55,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 16:42:55,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:55,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 16:42:55,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 16:42:55,473 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2022-12-12 16:42:55,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2022-12-12 16:42:55,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:55,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2022-12-12 16:42:55,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:55,571 INFO L130 PetriNetUnfolder]: 297/632 cut-off events. [2022-12-12 16:42:55,578 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-12-12 16:42:55,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 632 events. 297/632 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3028 event pairs, 117 based on Foata normal form. 0/585 useless extension candidates. Maximal degree in co-relation 384. Up to 299 conditions per place. [2022-12-12 16:42:55,587 INFO L137 encePairwiseOnDemand]: 28/31 looper letters, 34 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-12 16:42:55,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 185 flow [2022-12-12 16:42:55,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 16:42:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 16:42:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2022-12-12 16:42:55,589 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6344086021505376 [2022-12-12 16:42:55,589 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 74 flow. Second operand 3 states and 59 transitions. [2022-12-12 16:42:55,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 185 flow [2022-12-12 16:42:55,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 16:42:55,591 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2022-12-12 16:42:55,591 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2022-12-12 16:42:55,592 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2022-12-12 16:42:55,592 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2022-12-12 16:42:55,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2022-12-12 16:42:55,592 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:55,593 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:55,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 16:42:55,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash 311444521, now seen corresponding path program 1 times [2022-12-12 16:42:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:55,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550796069] [2022-12-12 16:42:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:55,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:42:55,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:55,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550796069] [2022-12-12 16:42:55,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550796069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:55,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:55,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 16:42:55,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315033880] [2022-12-12 16:42:55,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:55,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 16:42:55,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:55,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 16:42:55,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 16:42:55,798 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2022-12-12 16:42:55,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-12-12 16:42:55,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:55,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2022-12-12 16:42:55,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:55,891 INFO L130 PetriNetUnfolder]: 285/664 cut-off events. [2022-12-12 16:42:55,891 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2022-12-12 16:42:55,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 664 events. 285/664 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3321 event pairs, 105 based on Foata normal form. 64/700 useless extension candidates. Maximal degree in co-relation 397. Up to 264 conditions per place. [2022-12-12 16:42:55,894 INFO L137 encePairwiseOnDemand]: 23/31 looper letters, 24 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2022-12-12 16:42:55,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 181 flow [2022-12-12 16:42:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 16:42:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 16:42:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2022-12-12 16:42:55,898 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2022-12-12 16:42:55,898 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 3 states and 54 transitions. [2022-12-12 16:42:55,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 181 flow [2022-12-12 16:42:55,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 16:42:55,901 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 102 flow [2022-12-12 16:42:55,901 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2022-12-12 16:42:55,902 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2022-12-12 16:42:55,903 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 102 flow [2022-12-12 16:42:55,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-12-12 16:42:55,903 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:55,903 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:55,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 16:42:55,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1212978579, now seen corresponding path program 2 times [2022-12-12 16:42:55,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:55,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393796108] [2022-12-12 16:42:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:55,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:42:56,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:56,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393796108] [2022-12-12 16:42:56,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393796108] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:42:56,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361007059] [2022-12-12 16:42:56,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 16:42:56,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:42:56,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:42:56,015 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) [2022-12-12 16:42:56,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 16:42:56,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 16:42:56,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:42:56,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-12 16:42:56,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:42:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:42:56,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:42:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:42:56,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361007059] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:42:56,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:42:56,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-12 16:42:56,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533817742] [2022-12-12 16:42:56,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:42:56,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 16:42:56,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:56,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 16:42:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 16:42:56,257 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2022-12-12 16:42:56,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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) [2022-12-12 16:42:56,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:56,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2022-12-12 16:42:56,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:56,562 INFO L130 PetriNetUnfolder]: 467/1194 cut-off events. [2022-12-12 16:42:56,562 INFO L131 PetriNetUnfolder]: For 437/443 co-relation queries the response was YES. [2022-12-12 16:42:56,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2655 conditions, 1194 events. 467/1194 cut-off events. For 437/443 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6701 event pairs, 42 based on Foata normal form. 90/1226 useless extension candidates. Maximal degree in co-relation 649. Up to 246 conditions per place. [2022-12-12 16:42:56,569 INFO L137 encePairwiseOnDemand]: 24/31 looper letters, 104 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2022-12-12 16:42:56,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 139 transitions, 755 flow [2022-12-12 16:42:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 16:42:56,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 16:42:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 245 transitions. [2022-12-12 16:42:56,575 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.607940446650124 [2022-12-12 16:42:56,575 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 102 flow. Second operand 13 states and 245 transitions. [2022-12-12 16:42:56,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 139 transitions, 755 flow [2022-12-12 16:42:56,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 139 transitions, 687 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-12 16:42:56,581 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 325 flow [2022-12-12 16:42:56,581 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=325, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2022-12-12 16:42:56,582 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2022-12-12 16:42:56,582 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 325 flow [2022-12-12 16:42:56,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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) [2022-12-12 16:42:56,582 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:56,582 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:56,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 16:42:56,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:42:56,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:56,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1641537243, now seen corresponding path program 3 times [2022-12-12 16:42:56,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:56,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247387571] [2022-12-12 16:42:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:56,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-12 16:42:56,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:56,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247387571] [2022-12-12 16:42:56,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247387571] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:42:56,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896058283] [2022-12-12 16:42:56,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 16:42:56,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:42:56,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:42:56,888 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) [2022-12-12 16:42:56,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 16:42:57,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 16:42:57,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:42:57,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 16:42:57,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:42:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-12 16:42:57,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 16:42:57,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896058283] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:57,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 16:42:57,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-12 16:42:57,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141785368] [2022-12-12 16:42:57,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:57,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:42:57,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:57,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:42:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-12 16:42:57,061 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 31 [2022-12-12 16:42:57,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 325 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2022-12-12 16:42:57,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:57,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 31 [2022-12-12 16:42:57,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:57,327 INFO L130 PetriNetUnfolder]: 800/1629 cut-off events. [2022-12-12 16:42:57,327 INFO L131 PetriNetUnfolder]: For 3035/3035 co-relation queries the response was YES. [2022-12-12 16:42:57,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4715 conditions, 1629 events. 800/1629 cut-off events. For 3035/3035 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8045 event pairs, 161 based on Foata normal form. 0/1513 useless extension candidates. Maximal degree in co-relation 3446. Up to 652 conditions per place. [2022-12-12 16:42:57,337 INFO L137 encePairwiseOnDemand]: 23/31 looper letters, 90 selfloop transitions, 8 changer transitions 1/101 dead transitions. [2022-12-12 16:42:57,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 101 transitions, 779 flow [2022-12-12 16:42:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:42:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:42:57,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2022-12-12 16:42:57,339 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2022-12-12 16:42:57,339 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 325 flow. Second operand 5 states and 75 transitions. [2022-12-12 16:42:57,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 101 transitions, 779 flow [2022-12-12 16:42:57,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 727 flow, removed 13 selfloop flow, removed 2 redundant places. [2022-12-12 16:42:57,350 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 345 flow [2022-12-12 16:42:57,351 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2022-12-12 16:42:57,353 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2022-12-12 16:42:57,353 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 345 flow [2022-12-12 16:42:57,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2022-12-12 16:42:57,354 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:57,354 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:57,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 16:42:57,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:42:57,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:57,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:57,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1500493803, now seen corresponding path program 4 times [2022-12-12 16:42:57,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:57,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415047673] [2022-12-12 16:42:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:57,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 16:42:57,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:57,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415047673] [2022-12-12 16:42:57,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415047673] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:42:57,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269702736] [2022-12-12 16:42:57,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 16:42:57,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:42:57,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:42:57,659 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) [2022-12-12 16:42:57,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 16:42:57,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 16:42:57,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:42:57,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 16:42:57,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:42:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 16:42:57,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:42:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-12 16:42:57,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269702736] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:42:57,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:42:57,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-12-12 16:42:57,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904725188] [2022-12-12 16:42:57,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:42:57,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 16:42:57,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:57,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 16:42:57,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-12 16:42:57,874 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2022-12-12 16:42:57,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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) [2022-12-12 16:42:57,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:57,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2022-12-12 16:42:57,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:58,077 INFO L130 PetriNetUnfolder]: 594/1427 cut-off events. [2022-12-12 16:42:58,077 INFO L131 PetriNetUnfolder]: For 2876/2894 co-relation queries the response was YES. [2022-12-12 16:42:58,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 1427 events. 594/1427 cut-off events. For 2876/2894 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7786 event pairs, 103 based on Foata normal form. 42/1457 useless extension candidates. Maximal degree in co-relation 3266. Up to 265 conditions per place. [2022-12-12 16:42:58,088 INFO L137 encePairwiseOnDemand]: 27/31 looper letters, 67 selfloop transitions, 13 changer transitions 0/93 dead transitions. [2022-12-12 16:42:58,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 93 transitions, 691 flow [2022-12-12 16:42:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:42:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:42:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2022-12-12 16:42:58,089 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2022-12-12 16:42:58,089 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 345 flow. Second operand 5 states and 95 transitions. [2022-12-12 16:42:58,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 93 transitions, 691 flow [2022-12-12 16:42:58,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 691 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 16:42:58,097 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 389 flow [2022-12-12 16:42:58,097 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2022-12-12 16:42:58,097 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2022-12-12 16:42:58,097 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 389 flow [2022-12-12 16:42:58,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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) [2022-12-12 16:42:58,098 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:58,098 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:58,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 16:42:58,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:42:58,304 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:58,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1403683821, now seen corresponding path program 5 times [2022-12-12 16:42:58,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:58,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24366661] [2022-12-12 16:42:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:58,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-12 16:42:58,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:58,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24366661] [2022-12-12 16:42:58,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24366661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:58,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:58,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 16:42:58,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446911033] [2022-12-12 16:42:58,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:58,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 16:42:58,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 16:42:58,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 16:42:58,381 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 31 [2022-12-12 16:42:58,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-12-12 16:42:58,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:58,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 31 [2022-12-12 16:42:58,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:58,547 INFO L130 PetriNetUnfolder]: 528/1113 cut-off events. [2022-12-12 16:42:58,547 INFO L131 PetriNetUnfolder]: For 2841/2841 co-relation queries the response was YES. [2022-12-12 16:42:58,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 1113 events. 528/1113 cut-off events. For 2841/2841 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4995 event pairs, 164 based on Foata normal form. 46/1159 useless extension candidates. Maximal degree in co-relation 3272. Up to 813 conditions per place. [2022-12-12 16:42:58,554 INFO L137 encePairwiseOnDemand]: 26/31 looper letters, 54 selfloop transitions, 3 changer transitions 3/62 dead transitions. [2022-12-12 16:42:58,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 485 flow [2022-12-12 16:42:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 16:42:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 16:42:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-12-12 16:42:58,555 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5376344086021505 [2022-12-12 16:42:58,555 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 389 flow. Second operand 3 states and 50 transitions. [2022-12-12 16:42:58,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 485 flow [2022-12-12 16:42:58,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 462 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-12 16:42:58,561 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 288 flow [2022-12-12 16:42:58,561 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2022-12-12 16:42:58,562 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2022-12-12 16:42:58,562 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 288 flow [2022-12-12 16:42:58,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-12-12 16:42:58,563 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:58,563 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:58,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 16:42:58,563 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:58,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash -674675233, now seen corresponding path program 6 times [2022-12-12 16:42:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:58,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380941239] [2022-12-12 16:42:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:58,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 16:42:58,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:58,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380941239] [2022-12-12 16:42:58,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380941239] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:42:58,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815258407] [2022-12-12 16:42:58,762 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 16:42:58,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:42:58,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:42:58,764 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) [2022-12-12 16:42:58,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 16:42:58,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-12 16:42:58,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:42:58,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 16:42:58,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:42:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-12 16:42:58,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 16:42:58,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815258407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:58,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 16:42:58,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-12-12 16:42:58,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567155207] [2022-12-12 16:42:58,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:58,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 16:42:58,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:58,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 16:42:58,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-12 16:42:58,969 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 31 [2022-12-12 16:42:58,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:58,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:58,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 31 [2022-12-12 16:42:58,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:59,170 INFO L130 PetriNetUnfolder]: 472/1003 cut-off events. [2022-12-12 16:42:59,170 INFO L131 PetriNetUnfolder]: For 1810/1810 co-relation queries the response was YES. [2022-12-12 16:42:59,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 1003 events. 472/1003 cut-off events. For 1810/1810 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4291 event pairs, 111 based on Foata normal form. 18/1021 useless extension candidates. Maximal degree in co-relation 1477. Up to 429 conditions per place. [2022-12-12 16:42:59,176 INFO L137 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2022-12-12 16:42:59,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 609 flow [2022-12-12 16:42:59,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 16:42:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 16:42:59,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2022-12-12 16:42:59,178 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2022-12-12 16:42:59,178 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 288 flow. Second operand 7 states and 72 transitions. [2022-12-12 16:42:59,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 609 flow [2022-12-12 16:42:59,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 603 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 16:42:59,185 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 345 flow [2022-12-12 16:42:59,185 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2022-12-12 16:42:59,186 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2022-12-12 16:42:59,187 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 345 flow [2022-12-12 16:42:59,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:59,187 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:59,187 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:59,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 16:42:59,395 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 [2022-12-12 16:42:59,396 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:59,396 INFO L85 PathProgramCache]: Analyzing trace with hash 977417563, now seen corresponding path program 7 times [2022-12-12 16:42:59,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:59,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733191410] [2022-12-12 16:42:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:59,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 16:42:59,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:59,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733191410] [2022-12-12 16:42:59,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733191410] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:42:59,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250227578] [2022-12-12 16:42:59,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 16:42:59,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:42:59,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:42:59,613 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) [2022-12-12 16:42:59,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 16:42:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:59,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-12 16:42:59,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:42:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 16:42:59,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:42:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 16:42:59,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250227578] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:42:59,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:42:59,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-12-12 16:42:59,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792993833] [2022-12-12 16:42:59,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:42:59,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 16:42:59,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:59,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 16:42:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 16:42:59,877 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 31 [2022-12-12 16:42:59,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:59,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:59,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 31 [2022-12-12 16:42:59,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:43:00,077 INFO L130 PetriNetUnfolder]: 325/706 cut-off events. [2022-12-12 16:43:00,078 INFO L131 PetriNetUnfolder]: For 1599/1599 co-relation queries the response was YES. [2022-12-12 16:43:00,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 706 events. 325/706 cut-off events. For 1599/1599 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2520 event pairs, 83 based on Foata normal form. 22/728 useless extension candidates. Maximal degree in co-relation 1235. Up to 300 conditions per place. [2022-12-12 16:43:00,082 INFO L137 encePairwiseOnDemand]: 23/31 looper letters, 60 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2022-12-12 16:43:00,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 570 flow [2022-12-12 16:43:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 16:43:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 16:43:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2022-12-12 16:43:00,083 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2022-12-12 16:43:00,083 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 345 flow. Second operand 7 states and 70 transitions. [2022-12-12 16:43:00,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 570 flow [2022-12-12 16:43:00,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 528 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-12-12 16:43:00,089 INFO L231 Difference]: Finished difference. Result has 66 places, 44 transitions, 272 flow [2022-12-12 16:43:00,089 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=272, PETRI_PLACES=66, PETRI_TRANSITIONS=44} [2022-12-12 16:43:00,090 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2022-12-12 16:43:00,090 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 44 transitions, 272 flow [2022-12-12 16:43:00,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:43:00,090 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:43:00,091 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:43:00,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 16:43:00,301 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 [2022-12-12 16:43:00,302 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:43:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:43:00,302 INFO L85 PathProgramCache]: Analyzing trace with hash -496571195, now seen corresponding path program 8 times [2022-12-12 16:43:00,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:43:00,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54832519] [2022-12-12 16:43:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:43:00,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:43:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 16:43:00,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-12 16:43:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 16:43:00,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-12 16:43:00,418 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-12 16:43:00,419 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 16:43:00,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 16:43:00,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 16:43:00,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 16:43:00,421 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2022-12-12 16:43:00,424 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 16:43:00,424 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 16:43:00,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 04:43:00 BasicIcfg [2022-12-12 16:43:00,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 16:43:00,501 INFO L158 Benchmark]: Toolchain (without parser) took 13768.46ms. Allocated memory was 183.5MB in the beginning and 317.7MB in the end (delta: 134.2MB). Free memory was 158.5MB in the beginning and 147.7MB in the end (delta: 10.9MB). Peak memory consumption was 146.3MB. Max. memory is 8.0GB. [2022-12-12 16:43:00,501 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 183.5MB. Free memory is still 160.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 16:43:00,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.79ms. Allocated memory is still 183.5MB. Free memory was 158.5MB in the beginning and 131.9MB in the end (delta: 26.6MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-12-12 16:43:00,501 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.85ms. Allocated memory is still 183.5MB. Free memory was 131.9MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 16:43:00,502 INFO L158 Benchmark]: Boogie Preprocessor took 47.10ms. Allocated memory is still 183.5MB. Free memory was 129.8MB in the beginning and 127.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 16:43:00,502 INFO L158 Benchmark]: RCFGBuilder took 468.06ms. Allocated memory is still 183.5MB. Free memory was 127.7MB in the beginning and 111.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-12 16:43:00,502 INFO L158 Benchmark]: TraceAbstraction took 12585.11ms. Allocated memory was 183.5MB in the beginning and 317.7MB in the end (delta: 134.2MB). Free memory was 109.9MB in the beginning and 147.7MB in the end (delta: -37.8MB). Peak memory consumption was 98.0MB. Max. memory is 8.0GB. [2022-12-12 16:43:00,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 183.5MB. Free memory is still 160.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 594.79ms. Allocated memory is still 183.5MB. Free memory was 158.5MB in the beginning and 131.9MB in the end (delta: 26.6MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.85ms. Allocated memory is still 183.5MB. Free memory was 131.9MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.10ms. Allocated memory is still 183.5MB. Free memory was 129.8MB in the beginning and 127.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 468.06ms. Allocated memory is still 183.5MB. Free memory was 127.7MB in the beginning and 111.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 12585.11ms. Allocated memory was 183.5MB in the beginning and 317.7MB in the end (delta: 134.2MB). Free memory was 109.9MB in the beginning and 147.7MB in the end (delta: -37.8MB). Peak memory consumption was 98.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.6s, 117 PlacesBefore, 32 PlacesAfterwards, 118 TransitionsBefore, 31 TransitionsAfterwards, 1922 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 53 TrivialYvCompositions, 32 ConcurrentYvCompositions, 2 ChoiceCompositions, 93 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1442, independent: 1373, independent conditional: 1373, independent unconditional: 0, dependent: 69, dependent conditional: 69, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1442, independent: 1373, independent conditional: 0, independent unconditional: 1373, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1442, independent: 1373, independent conditional: 0, independent unconditional: 1373, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1442, independent: 1373, independent conditional: 0, independent unconditional: 1373, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1167, independent: 1139, independent conditional: 0, independent unconditional: 1139, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1167, independent: 1115, independent conditional: 0, independent unconditional: 1115, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 89, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1442, independent: 234, independent conditional: 0, independent unconditional: 234, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 1167, unknown conditional: 0, unknown unconditional: 1167] , Statistics on independence cache: Total cache size (in pairs): 1782, Positive cache size: 1754, Positive conditional cache size: 0, Positive unconditional cache size: 1754, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={7:0}, t2={6:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={7:0}, t2={6:0}, total=0] [L878] COND TRUE 1 i < 3 [L915] 0 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1] [L897] 2 num-- [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L916] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={7:0}, t2={6:0}, total=3] [L897] 2 num-- [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] [L917] COND TRUE 0 \read(flag) [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={6:0}, total=6] - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 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: 12.3s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 308 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 308 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 932 IncrementalHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 4 mSDtfsCounter, 932 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 287 SyntacticMatches, 15 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=6, InterpolantAutomatonStates: 49, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 510 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 554 ConstructedInterpolants, 0 QuantifiedInterpolants, 1264 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1392 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 273/350 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 proved your program to be incorrect! [2022-12-12 16:43:00,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...