/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:43:25,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:43:25,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:43:25,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:43:25,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:43:25,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:43:25,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:43:25,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:43:25,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:43:25,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:43:25,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:43:25,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:43:25,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:43:25,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:43:25,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:43:25,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:43:25,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:43:25,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:43:25,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:43:25,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:43:25,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:43:25,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:43:25,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:43:25,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:43:25,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:43:25,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:43:25,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:43:25,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:43:25,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:43:25,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:43:25,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:43:25,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:43:25,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:43:25,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:43:25,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:43:25,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:43:25,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:43:25,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:43:25,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:43:25,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:43:25,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:43:25,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 21:43:25,906 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:43:25,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:43:25,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:43:25,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:43:25,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:43:25,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:43:25,909 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:43:25,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:43:25,909 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:43:25,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:43:25,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:43:25,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:43:25,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:43:25,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:43:25,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:43:25,911 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:43:25,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:43:25,911 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:43:25,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:43:25,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:43:25,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:43:25,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:43:25,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:43:25,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:43:25,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:43:25,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:43:25,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:43:25,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:43:25,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:43:25,913 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:43:25,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:43:25,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:43:26,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:43:26,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:43:26,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:43:26,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:43:26,138 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:43:26,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-3.wvr.c [2022-09-20 21:43:26,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bcc9af78/73f7886a506e4b23a829900bdd433f5f/FLAGd4c100776 [2022-09-20 21:43:26,518 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:43:26,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c [2022-09-20 21:43:26,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bcc9af78/73f7886a506e4b23a829900bdd433f5f/FLAGd4c100776 [2022-09-20 21:43:26,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bcc9af78/73f7886a506e4b23a829900bdd433f5f [2022-09-20 21:43:26,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:43:26,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:43:26,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:43:26,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:43:26,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:43:26,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:43:26" (1/1) ... [2022-09-20 21:43:26,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634048e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:26, skipping insertion in model container [2022-09-20 21:43:26,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:43:26" (1/1) ... [2022-09-20 21:43:26,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:43:26,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:43:27,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c[2500,2513] [2022-09-20 21:43:27,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:43:27,143 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:43:27,160 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c[2500,2513] [2022-09-20 21:43:27,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:43:27,182 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:43:27,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27 WrapperNode [2022-09-20 21:43:27,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:43:27,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:43:27,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:43:27,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:43:27,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (1/1) ... [2022-09-20 21:43:27,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (1/1) ... [2022-09-20 21:43:27,221 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 144 [2022-09-20 21:43:27,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:43:27,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:43:27,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:43:27,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:43:27,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (1/1) ... [2022-09-20 21:43:27,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (1/1) ... [2022-09-20 21:43:27,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (1/1) ... [2022-09-20 21:43:27,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (1/1) ... [2022-09-20 21:43:27,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (1/1) ... [2022-09-20 21:43:27,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (1/1) ... [2022-09-20 21:43:27,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (1/1) ... [2022-09-20 21:43:27,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:43:27,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:43:27,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:43:27,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:43:27,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (1/1) ... [2022-09-20 21:43:27,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:43:27,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:43:27,284 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) [2022-09-20 21:43:27,313 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 [2022-09-20 21:43:27,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:43:27,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:43:27,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:43:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:43:27,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:43:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:43:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:43:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:43:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:43:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:43:27,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:43:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:43:27,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:43:27,341 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 21:43:27,465 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:43:27,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:43:27,681 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:43:27,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:43:27,691 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-20 21:43:27,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:43:27 BoogieIcfgContainer [2022-09-20 21:43:27,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:43:27,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:43:27,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:43:27,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:43:27,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:43:26" (1/3) ... [2022-09-20 21:43:27,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ecb6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:43:27, skipping insertion in model container [2022-09-20 21:43:27,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:43:27" (2/3) ... [2022-09-20 21:43:27,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ecb6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:43:27, skipping insertion in model container [2022-09-20 21:43:27,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:43:27" (3/3) ... [2022-09-20 21:43:27,701 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2022-09-20 21:43:27,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:43:27,717 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:43:27,717 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:43:27,779 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 21:43:27,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 185 transitions, 386 flow [2022-09-20 21:43:27,937 INFO L130 PetriNetUnfolder]: 15/183 cut-off events. [2022-09-20 21:43:27,937 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 21:43:27,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 15/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 173 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-09-20 21:43:27,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 185 transitions, 386 flow [2022-09-20 21:43:27,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 174 transitions, 360 flow [2022-09-20 21:43:27,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:43:27,975 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;@6c73e003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:43:27,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 21:43:28,015 INFO L130 PetriNetUnfolder]: 13/155 cut-off events. [2022-09-20 21:43:28,015 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 21:43:28,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:28,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:28,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash 403406779, now seen corresponding path program 1 times [2022-09-20 21:43:28,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:28,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114951162] [2022-09-20 21:43:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:28,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:43:28,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:28,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114951162] [2022-09-20 21:43:28,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114951162] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:43:28,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:43:28,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 21:43:28,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929348289] [2022-09-20 21:43:28,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:43:28,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 21:43:28,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 21:43:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 21:43:28,356 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 185 [2022-09-20 21:43:28,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 174 transitions, 360 flow. Second operand has 2 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 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) [2022-09-20 21:43:28,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:28,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 185 [2022-09-20 21:43:28,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:28,408 INFO L130 PetriNetUnfolder]: 3/162 cut-off events. [2022-09-20 21:43:28,409 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-09-20 21:43:28,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 162 events. 3/162 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 138 event pairs, 0 based on Foata normal form. 15/165 useless extension candidates. Maximal degree in co-relation 104. Up to 5 conditions per place. [2022-09-20 21:43:28,412 INFO L137 encePairwiseOnDemand]: 173/185 looper letters, 4 selfloop transitions, 0 changer transitions 5/162 dead transitions. [2022-09-20 21:43:28,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 344 flow [2022-09-20 21:43:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 21:43:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 21:43:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 352 transitions. [2022-09-20 21:43:28,432 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9513513513513514 [2022-09-20 21:43:28,432 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 352 transitions. [2022-09-20 21:43:28,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 352 transitions. [2022-09-20 21:43:28,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:28,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 352 transitions. [2022-09-20 21:43:28,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.0) internal successors, (352), 2 states have internal predecessors, (352), 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) [2022-09-20 21:43:28,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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) [2022-09-20 21:43:28,444 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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) [2022-09-20 21:43:28,445 INFO L175 Difference]: Start difference. First operand has 166 places, 174 transitions, 360 flow. Second operand 2 states and 352 transitions. [2022-09-20 21:43:28,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 344 flow [2022-09-20 21:43:28,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 162 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:43:28,453 INFO L231 Difference]: Finished difference. Result has 163 places, 157 transitions, 318 flow [2022-09-20 21:43:28,455 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=318, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2022-09-20 21:43:28,458 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, -3 predicate places. [2022-09-20 21:43:28,458 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 318 flow [2022-09-20 21:43:28,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 171.0) internal successors, (342), 2 states have internal predecessors, (342), 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) [2022-09-20 21:43:28,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:28,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:28,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:43:28,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:28,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:28,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1921775615, now seen corresponding path program 1 times [2022-09-20 21:43:28,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:28,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795832105] [2022-09-20 21:43:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:28,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:43:28,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:28,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795832105] [2022-09-20 21:43:28,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795832105] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:43:28,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:43:28,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 21:43:28,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617619005] [2022-09-20 21:43:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:43:28,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:43:28,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:28,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:43:28,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:43:28,649 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 185 [2022-09-20 21:43:28,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 157 transitions, 318 flow. Second operand has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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) [2022-09-20 21:43:28,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:28,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 185 [2022-09-20 21:43:28,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:28,780 INFO L130 PetriNetUnfolder]: 18/255 cut-off events. [2022-09-20 21:43:28,780 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-09-20 21:43:28,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 255 events. 18/255 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 546 event pairs, 7 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 324. Up to 54 conditions per place. [2022-09-20 21:43:28,783 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 37 selfloop transitions, 7 changer transitions 0/161 dead transitions. [2022-09-20 21:43:28,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 161 transitions, 414 flow [2022-09-20 21:43:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:43:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:43:28,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1061 transitions. [2022-09-20 21:43:28,789 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7168918918918918 [2022-09-20 21:43:28,789 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1061 transitions. [2022-09-20 21:43:28,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1061 transitions. [2022-09-20 21:43:28,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:28,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1061 transitions. [2022-09-20 21:43:28,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.625) internal successors, (1061), 8 states have internal predecessors, (1061), 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) [2022-09-20 21:43:28,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 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) [2022-09-20 21:43:28,799 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 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) [2022-09-20 21:43:28,799 INFO L175 Difference]: Start difference. First operand has 163 places, 157 transitions, 318 flow. Second operand 8 states and 1061 transitions. [2022-09-20 21:43:28,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 161 transitions, 414 flow [2022-09-20 21:43:28,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 161 transitions, 414 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:43:28,806 INFO L231 Difference]: Finished difference. Result has 166 places, 158 transitions, 340 flow [2022-09-20 21:43:28,806 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=340, PETRI_PLACES=166, PETRI_TRANSITIONS=158} [2022-09-20 21:43:28,807 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 0 predicate places. [2022-09-20 21:43:28,807 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 158 transitions, 340 flow [2022-09-20 21:43:28,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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) [2022-09-20 21:43:28,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:28,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:28,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:43:28,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:28,809 INFO L85 PathProgramCache]: Analyzing trace with hash 379398891, now seen corresponding path program 1 times [2022-09-20 21:43:28,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:28,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874710207] [2022-09-20 21:43:28,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:28,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:28,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:28,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874710207] [2022-09-20 21:43:28,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874710207] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:43:28,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:43:28,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:43:28,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698793038] [2022-09-20 21:43:28,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:43:28,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:43:28,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:28,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:43:28,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:43:28,995 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 185 [2022-09-20 21:43:28,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 158 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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) [2022-09-20 21:43:28,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:28,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 185 [2022-09-20 21:43:28,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:29,236 INFO L130 PetriNetUnfolder]: 97/658 cut-off events. [2022-09-20 21:43:29,237 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-09-20 21:43:29,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 658 events. 97/658 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3387 event pairs, 29 based on Foata normal form. 1/611 useless extension candidates. Maximal degree in co-relation 897. Up to 106 conditions per place. [2022-09-20 21:43:29,243 INFO L137 encePairwiseOnDemand]: 178/185 looper letters, 59 selfloop transitions, 5 changer transitions 4/188 dead transitions. [2022-09-20 21:43:29,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 188 transitions, 541 flow [2022-09-20 21:43:29,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 21:43:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 21:43:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 843 transitions. [2022-09-20 21:43:29,246 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7594594594594595 [2022-09-20 21:43:29,246 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 843 transitions. [2022-09-20 21:43:29,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 843 transitions. [2022-09-20 21:43:29,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:29,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 843 transitions. [2022-09-20 21:43:29,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 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) [2022-09-20 21:43:29,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 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) [2022-09-20 21:43:29,251 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 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) [2022-09-20 21:43:29,251 INFO L175 Difference]: Start difference. First operand has 166 places, 158 transitions, 340 flow. Second operand 6 states and 843 transitions. [2022-09-20 21:43:29,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 188 transitions, 541 flow [2022-09-20 21:43:29,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 188 transitions, 529 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 21:43:29,258 INFO L231 Difference]: Finished difference. Result has 168 places, 161 transitions, 357 flow [2022-09-20 21:43:29,259 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=168, PETRI_TRANSITIONS=161} [2022-09-20 21:43:29,261 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 2 predicate places. [2022-09-20 21:43:29,261 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 161 transitions, 357 flow [2022-09-20 21:43:29,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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) [2022-09-20 21:43:29,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:29,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:29,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:43:29,262 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:29,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1977040316, now seen corresponding path program 1 times [2022-09-20 21:43:29,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:29,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000776167] [2022-09-20 21:43:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:29,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:29,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:29,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000776167] [2022-09-20 21:43:29,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000776167] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:43:29,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788198330] [2022-09-20 21:43:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:29,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:43:29,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:43:29,507 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) [2022-09-20 21:43:29,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 21:43:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:29,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 21:43:29,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:43:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:29,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:43:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:29,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788198330] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:43:29,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:43:29,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-09-20 21:43:29,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540627969] [2022-09-20 21:43:29,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:43:29,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 21:43:29,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:29,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 21:43:29,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-20 21:43:29,889 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 185 [2022-09-20 21:43:29,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 161 transitions, 357 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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) [2022-09-20 21:43:29,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:29,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 185 [2022-09-20 21:43:29,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:30,001 INFO L130 PetriNetUnfolder]: 96/702 cut-off events. [2022-09-20 21:43:30,002 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-09-20 21:43:30,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 937 conditions, 702 events. 96/702 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3585 event pairs, 13 based on Foata normal form. 0/617 useless extension candidates. Maximal degree in co-relation 929. Up to 111 conditions per place. [2022-09-20 21:43:30,007 INFO L137 encePairwiseOnDemand]: 180/185 looper letters, 24 selfloop transitions, 5 changer transitions 1/173 dead transitions. [2022-09-20 21:43:30,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 173 transitions, 445 flow [2022-09-20 21:43:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 21:43:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 21:43:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 647 transitions. [2022-09-20 21:43:30,010 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8743243243243243 [2022-09-20 21:43:30,010 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 647 transitions. [2022-09-20 21:43:30,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 647 transitions. [2022-09-20 21:43:30,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:30,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 647 transitions. [2022-09-20 21:43:30,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 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) [2022-09-20 21:43:30,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 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) [2022-09-20 21:43:30,014 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 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) [2022-09-20 21:43:30,014 INFO L175 Difference]: Start difference. First operand has 168 places, 161 transitions, 357 flow. Second operand 4 states and 647 transitions. [2022-09-20 21:43:30,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 173 transitions, 445 flow [2022-09-20 21:43:30,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 173 transitions, 441 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 21:43:30,019 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 389 flow [2022-09-20 21:43:30,019 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=389, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2022-09-20 21:43:30,020 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 4 predicate places. [2022-09-20 21:43:30,020 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 389 flow [2022-09-20 21:43:30,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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) [2022-09-20 21:43:30,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:30,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:30,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 21:43:30,239 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 [2022-09-20 21:43:30,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash -873220796, now seen corresponding path program 2 times [2022-09-20 21:43:30,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:30,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330359659] [2022-09-20 21:43:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:30,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:30,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330359659] [2022-09-20 21:43:30,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330359659] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:43:30,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:43:30,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 21:43:30,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504354451] [2022-09-20 21:43:30,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:43:30,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 21:43:30,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 21:43:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 21:43:30,359 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 185 [2022-09-20 21:43:30,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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) [2022-09-20 21:43:30,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:30,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 185 [2022-09-20 21:43:30,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:30,481 INFO L130 PetriNetUnfolder]: 112/796 cut-off events. [2022-09-20 21:43:30,481 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-09-20 21:43:30,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 796 events. 112/796 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4073 event pairs, 38 based on Foata normal form. 2/752 useless extension candidates. Maximal degree in co-relation 1198. Up to 157 conditions per place. [2022-09-20 21:43:30,488 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 27 selfloop transitions, 6 changer transitions 0/176 dead transitions. [2022-09-20 21:43:30,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 176 transitions, 496 flow [2022-09-20 21:43:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 21:43:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 21:43:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 799 transitions. [2022-09-20 21:43:30,491 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8637837837837837 [2022-09-20 21:43:30,491 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 799 transitions. [2022-09-20 21:43:30,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 799 transitions. [2022-09-20 21:43:30,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:30,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 799 transitions. [2022-09-20 21:43:30,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 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) [2022-09-20 21:43:30,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2022-09-20 21:43:30,496 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2022-09-20 21:43:30,496 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 389 flow. Second operand 5 states and 799 transitions. [2022-09-20 21:43:30,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 176 transitions, 496 flow [2022-09-20 21:43:30,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 176 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:43:30,501 INFO L231 Difference]: Finished difference. Result has 176 places, 167 transitions, 424 flow [2022-09-20 21:43:30,502 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=176, PETRI_TRANSITIONS=167} [2022-09-20 21:43:30,504 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 10 predicate places. [2022-09-20 21:43:30,504 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 167 transitions, 424 flow [2022-09-20 21:43:30,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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) [2022-09-20 21:43:30,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:30,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:30,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 21:43:30,505 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1740412070, now seen corresponding path program 3 times [2022-09-20 21:43:30,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:30,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141013502] [2022-09-20 21:43:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:30,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:30,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141013502] [2022-09-20 21:43:30,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141013502] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:43:30,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418300434] [2022-09-20 21:43:30,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 21:43:30,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:43:30,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:43:30,652 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) [2022-09-20 21:43:30,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:43:30,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-20 21:43:30,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:43:30,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 21:43:30,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:43:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:30,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:43:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:30,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418300434] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:43:30,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:43:30,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2022-09-20 21:43:30,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092238771] [2022-09-20 21:43:30,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:43:30,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:43:30,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:30,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:43:30,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:43:30,962 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 185 [2022-09-20 21:43:30,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 167 transitions, 424 flow. Second operand has 8 states, 8 states have (on average 154.125) internal successors, (1233), 8 states have internal predecessors, (1233), 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) [2022-09-20 21:43:30,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:30,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 185 [2022-09-20 21:43:30,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:31,263 INFO L130 PetriNetUnfolder]: 223/1428 cut-off events. [2022-09-20 21:43:31,263 INFO L131 PetriNetUnfolder]: For 646/654 co-relation queries the response was YES. [2022-09-20 21:43:31,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 1428 events. 223/1428 cut-off events. For 646/654 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9449 event pairs, 67 based on Foata normal form. 8/1348 useless extension candidates. Maximal degree in co-relation 2366. Up to 312 conditions per place. [2022-09-20 21:43:31,272 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 54 selfloop transitions, 25 changer transitions 2/221 dead transitions. [2022-09-20 21:43:31,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 221 transitions, 798 flow [2022-09-20 21:43:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 21:43:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 21:43:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1431 transitions. [2022-09-20 21:43:31,276 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8594594594594595 [2022-09-20 21:43:31,276 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1431 transitions. [2022-09-20 21:43:31,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1431 transitions. [2022-09-20 21:43:31,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:31,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1431 transitions. [2022-09-20 21:43:31,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 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) [2022-09-20 21:43:31,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 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) [2022-09-20 21:43:31,283 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 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) [2022-09-20 21:43:31,283 INFO L175 Difference]: Start difference. First operand has 176 places, 167 transitions, 424 flow. Second operand 9 states and 1431 transitions. [2022-09-20 21:43:31,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 221 transitions, 798 flow [2022-09-20 21:43:31,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 221 transitions, 788 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 21:43:31,291 INFO L231 Difference]: Finished difference. Result has 187 places, 190 transitions, 624 flow [2022-09-20 21:43:31,292 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=187, PETRI_TRANSITIONS=190} [2022-09-20 21:43:31,293 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 21 predicate places. [2022-09-20 21:43:31,293 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 190 transitions, 624 flow [2022-09-20 21:43:31,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.125) internal successors, (1233), 8 states have internal predecessors, (1233), 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) [2022-09-20 21:43:31,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:31,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:31,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 21:43:31,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-09-20 21:43:31,507 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:31,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash 642164796, now seen corresponding path program 4 times [2022-09-20 21:43:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:31,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543659590] [2022-09-20 21:43:31,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:31,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:31,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:31,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543659590] [2022-09-20 21:43:31,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543659590] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:43:31,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:43:31,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:43:31,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018033738] [2022-09-20 21:43:31,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:43:31,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:43:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:31,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:43:31,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:43:31,624 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 185 [2022-09-20 21:43:31,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 190 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 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) [2022-09-20 21:43:31,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:31,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 185 [2022-09-20 21:43:31,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:31,865 INFO L130 PetriNetUnfolder]: 221/1406 cut-off events. [2022-09-20 21:43:31,865 INFO L131 PetriNetUnfolder]: For 1110/1110 co-relation queries the response was YES. [2022-09-20 21:43:31,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2570 conditions, 1406 events. 221/1406 cut-off events. For 1110/1110 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9249 event pairs, 73 based on Foata normal form. 11/1326 useless extension candidates. Maximal degree in co-relation 2553. Up to 298 conditions per place. [2022-09-20 21:43:31,873 INFO L137 encePairwiseOnDemand]: 177/185 looper letters, 52 selfloop transitions, 20 changer transitions 2/214 dead transitions. [2022-09-20 21:43:31,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 214 transitions, 868 flow [2022-09-20 21:43:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 21:43:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 21:43:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 959 transitions. [2022-09-20 21:43:31,877 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8639639639639639 [2022-09-20 21:43:31,877 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 959 transitions. [2022-09-20 21:43:31,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 959 transitions. [2022-09-20 21:43:31,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:31,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 959 transitions. [2022-09-20 21:43:31,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 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) [2022-09-20 21:43:31,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 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) [2022-09-20 21:43:31,883 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 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) [2022-09-20 21:43:31,884 INFO L175 Difference]: Start difference. First operand has 187 places, 190 transitions, 624 flow. Second operand 6 states and 959 transitions. [2022-09-20 21:43:31,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 214 transitions, 868 flow [2022-09-20 21:43:31,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 214 transitions, 847 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-09-20 21:43:31,891 INFO L231 Difference]: Finished difference. Result has 194 places, 195 transitions, 712 flow [2022-09-20 21:43:31,892 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=712, PETRI_PLACES=194, PETRI_TRANSITIONS=195} [2022-09-20 21:43:31,892 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 28 predicate places. [2022-09-20 21:43:31,893 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 195 transitions, 712 flow [2022-09-20 21:43:31,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 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) [2022-09-20 21:43:31,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:31,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:31,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 21:43:31,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:31,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:31,897 INFO L85 PathProgramCache]: Analyzing trace with hash -498513026, now seen corresponding path program 1 times [2022-09-20 21:43:31,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:31,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761307806] [2022-09-20 21:43:31,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:31,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:32,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:32,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761307806] [2022-09-20 21:43:32,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761307806] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:43:32,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460685165] [2022-09-20 21:43:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:32,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:43:32,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:43:32,048 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) [2022-09-20 21:43:32,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 21:43:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:32,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 21:43:32,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:43:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:32,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:43:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:32,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460685165] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:43:32,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:43:32,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2022-09-20 21:43:32,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755028576] [2022-09-20 21:43:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:43:32,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 21:43:32,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:32,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 21:43:32,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-20 21:43:32,348 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 185 [2022-09-20 21:43:32,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 195 transitions, 712 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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) [2022-09-20 21:43:32,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:32,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 185 [2022-09-20 21:43:32,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:32,491 INFO L130 PetriNetUnfolder]: 113/1073 cut-off events. [2022-09-20 21:43:32,491 INFO L131 PetriNetUnfolder]: For 957/991 co-relation queries the response was YES. [2022-09-20 21:43:32,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 1073 events. 113/1073 cut-off events. For 957/991 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6357 event pairs, 12 based on Foata normal form. 21/1019 useless extension candidates. Maximal degree in co-relation 1925. Up to 98 conditions per place. [2022-09-20 21:43:32,500 INFO L137 encePairwiseOnDemand]: 180/185 looper letters, 34 selfloop transitions, 21 changer transitions 0/207 dead transitions. [2022-09-20 21:43:32,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 207 transitions, 897 flow [2022-09-20 21:43:32,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 21:43:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 21:43:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 657 transitions. [2022-09-20 21:43:32,502 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8878378378378379 [2022-09-20 21:43:32,502 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 657 transitions. [2022-09-20 21:43:32,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 657 transitions. [2022-09-20 21:43:32,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:32,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 657 transitions. [2022-09-20 21:43:32,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.25) internal successors, (657), 4 states have internal predecessors, (657), 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) [2022-09-20 21:43:32,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 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) [2022-09-20 21:43:32,506 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 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) [2022-09-20 21:43:32,506 INFO L175 Difference]: Start difference. First operand has 194 places, 195 transitions, 712 flow. Second operand 4 states and 657 transitions. [2022-09-20 21:43:32,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 207 transitions, 897 flow [2022-09-20 21:43:32,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 207 transitions, 873 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-09-20 21:43:32,512 INFO L231 Difference]: Finished difference. Result has 195 places, 197 transitions, 787 flow [2022-09-20 21:43:32,513 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=787, PETRI_PLACES=195, PETRI_TRANSITIONS=197} [2022-09-20 21:43:32,515 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 29 predicate places. [2022-09-20 21:43:32,515 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 197 transitions, 787 flow [2022-09-20 21:43:32,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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) [2022-09-20 21:43:32,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:32,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:32,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 21:43:32,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:43:32,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2029009046, now seen corresponding path program 2 times [2022-09-20 21:43:32,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:32,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569573223] [2022-09-20 21:43:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:32,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:32,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:32,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569573223] [2022-09-20 21:43:32,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569573223] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:43:32,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:43:32,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 21:43:32,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734791853] [2022-09-20 21:43:32,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:43:32,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 21:43:32,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 21:43:32,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 21:43:32,793 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 185 [2022-09-20 21:43:32,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 197 transitions, 787 flow. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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) [2022-09-20 21:43:32,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:32,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 185 [2022-09-20 21:43:32,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:32,956 INFO L130 PetriNetUnfolder]: 108/965 cut-off events. [2022-09-20 21:43:32,956 INFO L131 PetriNetUnfolder]: For 1236/1276 co-relation queries the response was YES. [2022-09-20 21:43:32,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 965 events. 108/965 cut-off events. For 1236/1276 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5390 event pairs, 16 based on Foata normal form. 27/922 useless extension candidates. Maximal degree in co-relation 1853. Up to 132 conditions per place. [2022-09-20 21:43:32,964 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 42 selfloop transitions, 13 changer transitions 1/208 dead transitions. [2022-09-20 21:43:32,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 208 transitions, 963 flow [2022-09-20 21:43:32,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 21:43:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 21:43:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 816 transitions. [2022-09-20 21:43:32,966 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8821621621621621 [2022-09-20 21:43:32,966 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 816 transitions. [2022-09-20 21:43:32,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 816 transitions. [2022-09-20 21:43:32,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:32,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 816 transitions. [2022-09-20 21:43:32,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 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) [2022-09-20 21:43:32,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2022-09-20 21:43:32,971 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2022-09-20 21:43:32,971 INFO L175 Difference]: Start difference. First operand has 195 places, 197 transitions, 787 flow. Second operand 5 states and 816 transitions. [2022-09-20 21:43:32,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 208 transitions, 963 flow [2022-09-20 21:43:32,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 208 transitions, 929 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-09-20 21:43:32,977 INFO L231 Difference]: Finished difference. Result has 199 places, 199 transitions, 820 flow [2022-09-20 21:43:32,978 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=820, PETRI_PLACES=199, PETRI_TRANSITIONS=199} [2022-09-20 21:43:32,978 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 33 predicate places. [2022-09-20 21:43:32,978 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 199 transitions, 820 flow [2022-09-20 21:43:32,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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) [2022-09-20 21:43:32,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:32,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:32,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 21:43:32,979 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash -654204688, now seen corresponding path program 3 times [2022-09-20 21:43:32,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:32,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550163115] [2022-09-20 21:43:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:32,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:33,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:33,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550163115] [2022-09-20 21:43:33,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550163115] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:43:33,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:43:33,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 21:43:33,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137904773] [2022-09-20 21:43:33,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:43:33,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 21:43:33,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:33,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 21:43:33,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-09-20 21:43:33,073 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 185 [2022-09-20 21:43:33,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 199 transitions, 820 flow. Second operand has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2022-09-20 21:43:33,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:33,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 185 [2022-09-20 21:43:33,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:33,275 INFO L130 PetriNetUnfolder]: 205/1296 cut-off events. [2022-09-20 21:43:33,275 INFO L131 PetriNetUnfolder]: For 1886/1886 co-relation queries the response was YES. [2022-09-20 21:43:33,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 1296 events. 205/1296 cut-off events. For 1886/1886 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7915 event pairs, 59 based on Foata normal form. 10/1228 useless extension candidates. Maximal degree in co-relation 2719. Up to 224 conditions per place. [2022-09-20 21:43:33,287 INFO L137 encePairwiseOnDemand]: 178/185 looper letters, 64 selfloop transitions, 21 changer transitions 4/229 dead transitions. [2022-09-20 21:43:33,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 229 transitions, 1150 flow [2022-09-20 21:43:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 21:43:33,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 21:43:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 965 transitions. [2022-09-20 21:43:33,290 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8693693693693694 [2022-09-20 21:43:33,290 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 965 transitions. [2022-09-20 21:43:33,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 965 transitions. [2022-09-20 21:43:33,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:33,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 965 transitions. [2022-09-20 21:43:33,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 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) [2022-09-20 21:43:33,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 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) [2022-09-20 21:43:33,295 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 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) [2022-09-20 21:43:33,295 INFO L175 Difference]: Start difference. First operand has 199 places, 199 transitions, 820 flow. Second operand 6 states and 965 transitions. [2022-09-20 21:43:33,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 229 transitions, 1150 flow [2022-09-20 21:43:33,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 229 transitions, 1127 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-09-20 21:43:33,305 INFO L231 Difference]: Finished difference. Result has 204 places, 202 transitions, 892 flow [2022-09-20 21:43:33,306 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=892, PETRI_PLACES=204, PETRI_TRANSITIONS=202} [2022-09-20 21:43:33,306 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 38 predicate places. [2022-09-20 21:43:33,306 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 202 transitions, 892 flow [2022-09-20 21:43:33,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2022-09-20 21:43:33,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:33,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:33,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 21:43:33,307 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1979876653, now seen corresponding path program 1 times [2022-09-20 21:43:33,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:33,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106500990] [2022-09-20 21:43:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:33,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:43:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:43:33,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106500990] [2022-09-20 21:43:33,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106500990] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:43:33,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753358242] [2022-09-20 21:43:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:33,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:43:33,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:43:33,552 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) [2022-09-20 21:43:33,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 21:43:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:33,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-20 21:43:33,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:43:34,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-20 21:43:34,537 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:43:34,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-09-20 21:43:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:43:34,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:43:35,092 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-09-20 21:43:35,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-09-20 21:43:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:43:35,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753358242] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:43:35,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:43:35,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 18] total 41 [2022-09-20 21:43:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667642178] [2022-09-20 21:43:35,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:43:35,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-09-20 21:43:35,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:43:35,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-09-20 21:43:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1485, Unknown=0, NotChecked=0, Total=1640 [2022-09-20 21:43:35,811 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 185 [2022-09-20 21:43:35,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 202 transitions, 892 flow. Second operand has 41 states, 41 states have (on average 82.73170731707317) internal successors, (3392), 41 states have internal predecessors, (3392), 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) [2022-09-20 21:43:35,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:43:35,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 185 [2022-09-20 21:43:35,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:43:50,479 INFO L130 PetriNetUnfolder]: 9016/19967 cut-off events. [2022-09-20 21:43:50,479 INFO L131 PetriNetUnfolder]: For 25314/25537 co-relation queries the response was YES. [2022-09-20 21:43:50,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47866 conditions, 19967 events. 9016/19967 cut-off events. For 25314/25537 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 176208 event pairs, 385 based on Foata normal form. 474/19308 useless extension candidates. Maximal degree in co-relation 47841. Up to 3038 conditions per place. [2022-09-20 21:43:50,621 INFO L137 encePairwiseOnDemand]: 130/185 looper letters, 854 selfloop transitions, 380 changer transitions 227/1534 dead transitions. [2022-09-20 21:43:50,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1534 transitions, 8627 flow [2022-09-20 21:43:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-09-20 21:43:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2022-09-20 21:43:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 13608 transitions. [2022-09-20 21:43:50,646 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.46262111167771547 [2022-09-20 21:43:50,647 INFO L72 ComplementDD]: Start complementDD. Operand 159 states and 13608 transitions. [2022-09-20 21:43:50,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 13608 transitions. [2022-09-20 21:43:50,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:43:50,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 159 states and 13608 transitions. [2022-09-20 21:43:50,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 160 states, 159 states have (on average 85.58490566037736) internal successors, (13608), 159 states have internal predecessors, (13608), 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) [2022-09-20 21:43:50,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 160 states, 160 states have (on average 185.0) internal successors, (29600), 160 states have internal predecessors, (29600), 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) [2022-09-20 21:43:50,762 INFO L81 ComplementDD]: Finished complementDD. Result has 160 states, 160 states have (on average 185.0) internal successors, (29600), 160 states have internal predecessors, (29600), 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) [2022-09-20 21:43:50,762 INFO L175 Difference]: Start difference. First operand has 204 places, 202 transitions, 892 flow. Second operand 159 states and 13608 transitions. [2022-09-20 21:43:50,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1534 transitions, 8627 flow [2022-09-20 21:43:50,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1534 transitions, 8418 flow, removed 29 selfloop flow, removed 4 redundant places. [2022-09-20 21:43:50,826 INFO L231 Difference]: Finished difference. Result has 462 places, 561 transitions, 4187 flow [2022-09-20 21:43:50,826 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=159, PETRI_FLOW=4187, PETRI_PLACES=462, PETRI_TRANSITIONS=561} [2022-09-20 21:43:50,827 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 296 predicate places. [2022-09-20 21:43:50,827 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 561 transitions, 4187 flow [2022-09-20 21:43:50,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 82.73170731707317) internal successors, (3392), 41 states have internal predecessors, (3392), 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) [2022-09-20 21:43:50,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:43:50,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:43:50,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 21:43:51,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:43:51,052 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:43:51,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:43:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash 263213250, now seen corresponding path program 2 times [2022-09-20 21:43:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:43:51,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258164202] [2022-09-20 21:43:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:43:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:43:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:43:54,697 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (* 3 c_~n~0))) (let ((.cse3 (div .cse2 4294967296))) (let ((.cse1 (div c_~n~0 4294967296)) (.cse0 (* .cse3 4294967296))) (and (<= .cse0 (+ (* 12884901888 .cse1) |c_thread2Thread1of1ForFork1_~i~1#1|)) (<= (+ .cse0 4294967296) (+ .cse2 (* 4294967295 |c_thread1Thread1of1ForFork0_#t~post2#1|))) (<= 1 |c_thread2Thread1of1ForFork1_~i~1#1|) (<= (+ 1 (* (div (+ (* .cse3 2863311530) 2863311531 (* (- 2) c_~n~0) (* 2 .cse1) |c_thread1Thread1of1ForFork0_#t~post2#1| (* 2863311531 (div (+ .cse0 (* (- 3) c_~n~0) |c_thread2Thread1of1ForFork1_~i~1#1| 4294967295) 4294967296))) 2863311531) 4294967296)) |c_thread1Thread1of1ForFork0_#t~post2#1|))))) is different from false [2022-09-20 21:44:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:44:07,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:44:07,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258164202] [2022-09-20 21:44:07,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258164202] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:44:07,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220073144] [2022-09-20 21:44:07,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:44:07,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:44:07,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:44:07,333 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) [2022-09-20 21:44:07,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 21:44:07,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 21:44:07,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:44:07,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 54 conjunts are in the unsatisfiable core [2022-09-20 21:44:07,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:44:07,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:44:08,582 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-20 21:44:08,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-20 21:44:08,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-20 21:44:14,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:44:16,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:44:19,070 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-09-20 21:44:19,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-09-20 21:44:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:44:19,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:44:29,636 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:44:29,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2022-09-20 21:44:29,647 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-09-20 21:44:29,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 173 [2022-09-20 21:44:29,657 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-09-20 21:44:29,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 142 [2022-09-20 21:44:29,665 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-09-20 21:44:29,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2022-09-20 21:44:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:44:31,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220073144] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:44:31,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:44:31,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 29, 27] total 68 [2022-09-20 21:44:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320332813] [2022-09-20 21:44:31,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:44:31,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-09-20 21:44:31,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:44:31,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-09-20 21:44:31,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=3923, Unknown=136, NotChecked=130, Total=4556 [2022-09-20 21:44:31,327 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 185 [2022-09-20 21:44:31,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 561 transitions, 4187 flow. Second operand has 68 states, 68 states have (on average 57.455882352941174) internal successors, (3907), 68 states have internal predecessors, (3907), 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) [2022-09-20 21:44:31,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:44:31,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 185 [2022-09-20 21:44:31,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:44:39,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-09-20 21:44:49,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:46:13,385 WARN L233 SmtUtils]: Spent 8.87s on a formula simplification. DAG size of input: 75 DAG size of output: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:46:14,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:46:32,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:48:19,769 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 81 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:48:38,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:48:56,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-09-20 21:49:15,747 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:49:17,756 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (* 3 c_~n~0))) (let ((.cse2 (div .cse3 4294967296))) (let ((.cse1 (div c_~n~0 4294967296)) (.cse0 (* .cse2 4294967296))) (and (<= 2 |c_thread2Thread1of1ForFork1_~i~1#1|) (<= c_~size~0 1) (<= (+ .cse0 1) (+ (* 12884901888 .cse1) |c_thread2Thread1of1ForFork1_~i~1#1|)) (<= (+ (* (div (+ (* .cse2 2863311530) (* 2863311531 (div (+ .cse0 (* (- 3) c_~n~0) |c_thread2Thread1of1ForFork1_~i~1#1| 4294967294) 4294967296)) 2863311531 (* (- 2) c_~n~0) (* 2 .cse1) |c_thread1Thread1of1ForFork0_#t~post2#1|) 2863311531) 4294967296) 1) |c_thread1Thread1of1ForFork0_#t~post2#1|) (exists ((v_~x1~0_10 Int)) (and (= (select (select |c_#memory_int| c_~f~0.base) (+ c_~f~0.offset (* v_~x1~0_10 4))) c_~x1~0) (<= 0 v_~x1~0_10) (< v_~x1~0_10 c_~size~0))) (<= (+ .cse0 4294967296) (+ .cse3 (* 4294967295 |c_thread1Thread1of1ForFork0_#t~post2#1|))))))) is different from false [2022-09-20 21:49:19,888 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse6 (* 3 c_~n~0))) (let ((.cse7 (div .cse6 4294967296)) (.cse8 (div c_~n~0 4294967296))) (let ((.cse5 (* 12884901888 .cse8)) (.cse0 (* .cse7 2863311530)) (.cse2 (* (- 3) c_~n~0)) (.cse3 (* (- 2) c_~n~0)) (.cse4 (* 2 .cse8)) (.cse1 (* .cse7 4294967296))) (and (<= 2 |c_thread2Thread1of1ForFork1_~i~1#1|) (<= (+ (* (div (+ .cse0 (* 2863311531 (div (+ .cse1 .cse2 4294967295 |c_thread2Thread1of1ForFork1_#t~post6#1|) 4294967296)) 2863311531 .cse3 .cse4 |c_thread1Thread1of1ForFork0_#t~post2#1|) 2863311531) 4294967296) 1) |c_thread1Thread1of1ForFork0_#t~post2#1|) (<= c_~size~0 1) (<= (+ .cse1 1) (+ .cse5 |c_thread2Thread1of1ForFork1_~i~1#1|)) (<= (+ .cse1 |c_thread1Thread1of1ForFork0_~i~0#1| 1) (+ .cse6 (* (div |c_thread1Thread1of1ForFork0_~i~0#1| 4294967296) 4294967296))) (<= .cse1 (+ .cse5 |c_thread2Thread1of1ForFork1_#t~post6#1|)) (<= (+ (* (div (+ .cse0 (* 2863311531 (div (+ .cse1 .cse2 |c_thread2Thread1of1ForFork1_~i~1#1| 4294967294) 4294967296)) 2863311531 .cse3 .cse4 |c_thread1Thread1of1ForFork0_#t~post2#1|) 2863311531) 4294967296) 1) |c_thread1Thread1of1ForFork0_#t~post2#1|) (<= (+ .cse1 4294967296) (+ .cse6 (* 4294967295 |c_thread1Thread1of1ForFork0_#t~post2#1|))) (<= 1 |c_thread2Thread1of1ForFork1_#t~post6#1|))))) is different from false [2022-09-20 21:50:13,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:50:15,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:50:23,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:52:17,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:52:19,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:53:41,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:53:43,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:53:45,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:54:26,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:54:49,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:55:47,328 WARN L233 SmtUtils]: Spent 10.31s on a formula simplification. DAG size of input: 61 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:55:52,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:55:54,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:56:10,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-09-20 21:56:44,835 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 21:56:44,835 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 21:56:45,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-09-20 21:56:45,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 370 states. [2022-09-20 21:56:45,289 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-09-20 21:56:45,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-20 21:56:45,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-20 21:56:45,490 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 414 known predicates. [2022-09-20 21:56:45,491 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-09-20 21:56:45,491 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-09-20 21:56:45,492 INFO L444 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1] [2022-09-20 21:56:45,496 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 21:56:45,496 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 21:56:45,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 09:56:45 BasicIcfg [2022-09-20 21:56:45,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 21:56:45,500 INFO L158 Benchmark]: Toolchain (without parser) took 798553.17ms. Allocated memory was 185.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 157.6MB in the beginning and 30.7MB in the end (delta: 126.9MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-09-20 21:56:45,500 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 185.6MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 21:56:45,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.35ms. Allocated memory was 185.6MB in the beginning and 234.9MB in the end (delta: 49.3MB). Free memory was 157.6MB in the beginning and 206.3MB in the end (delta: -48.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-09-20 21:56:45,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.86ms. Allocated memory is still 234.9MB. Free memory was 206.3MB in the beginning and 204.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 21:56:45,500 INFO L158 Benchmark]: Boogie Preprocessor took 22.89ms. Allocated memory is still 234.9MB. Free memory was 204.3MB in the beginning and 202.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 21:56:45,501 INFO L158 Benchmark]: RCFGBuilder took 447.23ms. Allocated memory is still 234.9MB. Free memory was 202.7MB in the beginning and 187.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-09-20 21:56:45,501 INFO L158 Benchmark]: TraceAbstraction took 797804.38ms. Allocated memory was 234.9MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 186.4MB in the beginning and 30.7MB in the end (delta: 155.7MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-09-20 21:56:45,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 185.6MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.35ms. Allocated memory was 185.6MB in the beginning and 234.9MB in the end (delta: 49.3MB). Free memory was 157.6MB in the beginning and 206.3MB in the end (delta: -48.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.86ms. Allocated memory is still 234.9MB. Free memory was 206.3MB in the beginning and 204.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.89ms. Allocated memory is still 234.9MB. Free memory was 204.3MB in the beginning and 202.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 447.23ms. Allocated memory is still 234.9MB. Free memory was 202.7MB in the beginning and 187.5MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 797804.38ms. Allocated memory was 234.9MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 186.4MB in the beginning and 30.7MB in the end (delta: 155.7MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 414 known predicates. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 414 known predicates. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 414 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 235 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: 797.7s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 751.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 15 mSolverCounterUnknown, 7876 SdHoareTripleChecker+Valid, 60.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7876 mSDsluCounter, 27540 SdHoareTripleChecker+Invalid, 58.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21123 IncrementalHoareTripleChecker+Unchecked, 27427 mSDsCounter, 340 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12879 IncrementalHoareTripleChecker+Invalid, 34357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 340 mSolverCounterUnsat, 979 mSDtfsCounter, 12879 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2142 GetRequests, 1415 SyntacticMatches, 72 SemanticMatches, 654 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 89336 ImplicationChecksByTransitivity, 702.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4187occurred in iteration=11, InterpolantAutomatonStates: 214, 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, 0.7s SatisfiabilityAnalysisTime, 43.9s InterpolantComputationTime, 2189 NumberOfCodeBlocks, 2189 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 2858 ConstructedInterpolants, 166 QuantifiedInterpolants, 21467 SizeOfPredicates, 72 NumberOfNonLiveVariables, 1395 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 22 InterpolantComputations, 9 PerfectInterpolantSequences, 38/87 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown