/usr/bin/java -Xmx16000000000 -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/bench-exp2x4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 00:14:52,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 00:14:52,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 00:14:52,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 00:14:52,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 00:14:52,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 00:14:52,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 00:14:52,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 00:14:52,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 00:14:52,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 00:14:52,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 00:14:52,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 00:14:52,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 00:14:52,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 00:14:52,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 00:14:52,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 00:14:52,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 00:14:52,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 00:14:52,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 00:14:52,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 00:14:52,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 00:14:53,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 00:14:53,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 00:14:53,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 00:14:53,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 00:14:53,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 00:14:53,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 00:14:53,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 00:14:53,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 00:14:53,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 00:14:53,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 00:14:53,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 00:14:53,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 00:14:53,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 00:14:53,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 00:14:53,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 00:14:53,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 00:14:53,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 00:14:53,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 00:14:53,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 00:14:53,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 00:14:53,021 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 [2022-01-19 00:14:53,049 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 00:14:53,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 00:14:53,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 00:14:53,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 00:14:53,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 00:14:53,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 00:14:53,050 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 00:14:53,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 00:14:53,051 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 00:14:53,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 00:14:53,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 00:14:53,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 00:14:53,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 00:14:53,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 00:14:53,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 00:14:53,054 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 00:14:53,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 00:14:53,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 00:14:53,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 00:14:53,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 00:14:53,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 00:14:53,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 00:14:53,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 00:14:53,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:14:53,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 00:14:53,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 00:14:53,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 00:14:53,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 00:14:53,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 00:14:53,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 00:14:53,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 00:14:53,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 00:14:53,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 00:14:53,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 00:14:53,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 00:14:53,298 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 00:14:53,298 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 00:14:53,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c [2022-01-19 00:14:53,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e5f64a2/f7d47e4d5edc4363b0377ef60ed569f8/FLAGa74feac1a [2022-01-19 00:14:53,740 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 00:14:53,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c [2022-01-19 00:14:53,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e5f64a2/f7d47e4d5edc4363b0377ef60ed569f8/FLAGa74feac1a [2022-01-19 00:14:53,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e5f64a2/f7d47e4d5edc4363b0377ef60ed569f8 [2022-01-19 00:14:53,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 00:14:53,763 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 00:14:53,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 00:14:53,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 00:14:53,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 00:14:53,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:14:53" (1/1) ... [2022-01-19 00:14:53,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d81982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:53, skipping insertion in model container [2022-01-19 00:14:53,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:14:53" (1/1) ... [2022-01-19 00:14:53,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 00:14:53,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 00:14:53,964 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/bench-exp2x4.wvr.c[2309,2322] [2022-01-19 00:14:53,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:14:53,972 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 00:14:53,989 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/bench-exp2x4.wvr.c[2309,2322] [2022-01-19 00:14:53,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:14:54,000 INFO L208 MainTranslator]: Completed translation [2022-01-19 00:14:54,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54 WrapperNode [2022-01-19 00:14:54,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 00:14:54,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 00:14:54,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 00:14:54,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 00:14:54,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (1/1) ... [2022-01-19 00:14:54,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (1/1) ... [2022-01-19 00:14:54,043 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-01-19 00:14:54,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 00:14:54,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 00:14:54,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 00:14:54,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 00:14:54,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (1/1) ... [2022-01-19 00:14:54,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (1/1) ... [2022-01-19 00:14:54,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (1/1) ... [2022-01-19 00:14:54,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (1/1) ... [2022-01-19 00:14:54,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (1/1) ... [2022-01-19 00:14:54,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (1/1) ... [2022-01-19 00:14:54,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (1/1) ... [2022-01-19 00:14:54,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 00:14:54,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 00:14:54,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 00:14:54,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 00:14:54,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (1/1) ... [2022-01-19 00:14:54,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:14:54,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 00:14:54,108 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) [2022-01-19 00:14:54,134 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 [2022-01-19 00:14:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 00:14:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 00:14:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 00:14:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 00:14:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 00:14:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 00:14:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 00:14:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-19 00:14:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-19 00:14:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 00:14:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 00:14:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 00:14:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 00:14:54,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 00:14:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 00:14:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 00:14:54,159 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 00:14:54,243 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 00:14:54,244 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 00:14:54,488 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 00:14:54,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 00:14:54,496 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-19 00:14:54,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:14:54 BoogieIcfgContainer [2022-01-19 00:14:54,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 00:14:54,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 00:14:54,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 00:14:54,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 00:14:54,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:14:53" (1/3) ... [2022-01-19 00:14:54,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603ca7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:14:54, skipping insertion in model container [2022-01-19 00:14:54,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:14:54" (2/3) ... [2022-01-19 00:14:54,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603ca7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:14:54, skipping insertion in model container [2022-01-19 00:14:54,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:14:54" (3/3) ... [2022-01-19 00:14:54,504 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x4.wvr.c [2022-01-19 00:14:54,508 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 00:14:54,508 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 00:14:54,508 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 00:14:54,547 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,547 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,549 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,549 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,549 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,550 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,551 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,551 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,551 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,551 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,553 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,553 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,553 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,553 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,558 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,558 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,559 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,560 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:14:54,564 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-19 00:14:54,602 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 00:14:54,607 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 00:14:54,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 00:14:54,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 129 transitions, 290 flow [2022-01-19 00:14:54,669 INFO L129 PetriNetUnfolder]: 10/125 cut-off events. [2022-01-19 00:14:54,670 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 00:14:54,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 10/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-01-19 00:14:54,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 129 transitions, 290 flow [2022-01-19 00:14:54,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 248 flow [2022-01-19 00:14:54,704 INFO L129 PetriNetUnfolder]: 10/111 cut-off events. [2022-01-19 00:14:54,704 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 00:14:54,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:14:54,705 INFO L254 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] [2022-01-19 00:14:54,705 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:14:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:14:54,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1320447835, now seen corresponding path program 1 times [2022-01-19 00:14:54,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:14:54,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634900537] [2022-01-19 00:14:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:14:54,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:14:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:14:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:14:54,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:14:54,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634900537] [2022-01-19 00:14:54,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634900537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:14:54,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:14:54,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 00:14:54,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109486549] [2022-01-19 00:14:54,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:14:54,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 00:14:54,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:14:54,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 00:14:54,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 00:14:54,995 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 129 [2022-01-19 00:14:55,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 248 flow. Second operand has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 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) [2022-01-19 00:14:55,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:14:55,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 129 [2022-01-19 00:14:55,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:14:55,077 INFO L129 PetriNetUnfolder]: 4/106 cut-off events. [2022-01-19 00:14:55,078 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-19 00:14:55,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 106 events. 4/106 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 18/118 useless extension candidates. Maximal degree in co-relation 86. Up to 9 conditions per place. [2022-01-19 00:14:55,081 INFO L132 encePairwiseOnDemand]: 123/129 looper letters, 8 selfloop transitions, 0 changer transitions 2/106 dead transitions. [2022-01-19 00:14:55,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 106 transitions, 252 flow [2022-01-19 00:14:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 00:14:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 00:14:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 242 transitions. [2022-01-19 00:14:55,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.937984496124031 [2022-01-19 00:14:55,095 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 242 transitions. [2022-01-19 00:14:55,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 242 transitions. [2022-01-19 00:14:55,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:14:55,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 242 transitions. [2022-01-19 00:14:55,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 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) [2022-01-19 00:14:55,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2022-01-19 00:14:55,113 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2022-01-19 00:14:55,114 INFO L186 Difference]: Start difference. First operand has 115 places, 112 transitions, 248 flow. Second operand 2 states and 242 transitions. [2022-01-19 00:14:55,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 106 transitions, 252 flow [2022-01-19 00:14:55,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 236 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-01-19 00:14:55,123 INFO L242 Difference]: Finished difference. Result has 108 places, 104 transitions, 216 flow [2022-01-19 00:14:55,124 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2022-01-19 00:14:55,128 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, -7 predicate places. [2022-01-19 00:14:55,128 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 216 flow [2022-01-19 00:14:55,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 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) [2022-01-19 00:14:55,129 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:14:55,130 INFO L254 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] [2022-01-19 00:14:55,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 00:14:55,131 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:14:55,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:14:55,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1027447866, now seen corresponding path program 1 times [2022-01-19 00:14:55,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:14:55,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030816130] [2022-01-19 00:14:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:14:55,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:14:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:14:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:14:55,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:14:55,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030816130] [2022-01-19 00:14:55,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030816130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:14:55,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:14:55,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 00:14:55,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857715868] [2022-01-19 00:14:55,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:14:55,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 00:14:55,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:14:55,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 00:14:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-19 00:14:55,596 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 129 [2022-01-19 00:14:55,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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) [2022-01-19 00:14:55,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:14:55,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 129 [2022-01-19 00:14:55,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:14:56,113 INFO L129 PetriNetUnfolder]: 1672/2858 cut-off events. [2022-01-19 00:14:56,113 INFO L130 PetriNetUnfolder]: For 125/177 co-relation queries the response was YES. [2022-01-19 00:14:56,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5261 conditions, 2858 events. 1672/2858 cut-off events. For 125/177 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15534 event pairs, 727 based on Foata normal form. 1/2129 useless extension candidates. Maximal degree in co-relation 5258. Up to 1838 conditions per place. [2022-01-19 00:14:56,140 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 51 selfloop transitions, 7 changer transitions 4/126 dead transitions. [2022-01-19 00:14:56,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 126 transitions, 391 flow [2022-01-19 00:14:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:14:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:14:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 623 transitions. [2022-01-19 00:14:56,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.689922480620155 [2022-01-19 00:14:56,147 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 623 transitions. [2022-01-19 00:14:56,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 623 transitions. [2022-01-19 00:14:56,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:14:56,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 623 transitions. [2022-01-19 00:14:56,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 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) [2022-01-19 00:14:56,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2022-01-19 00:14:56,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2022-01-19 00:14:56,154 INFO L186 Difference]: Start difference. First operand has 108 places, 104 transitions, 216 flow. Second operand 7 states and 623 transitions. [2022-01-19 00:14:56,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 126 transitions, 391 flow [2022-01-19 00:14:56,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 00:14:56,159 INFO L242 Difference]: Finished difference. Result has 115 places, 108 transitions, 257 flow [2022-01-19 00:14:56,159 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2022-01-19 00:14:56,160 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 0 predicate places. [2022-01-19 00:14:56,160 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 257 flow [2022-01-19 00:14:56,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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) [2022-01-19 00:14:56,161 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:14:56,161 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:14:56,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 00:14:56,162 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:14:56,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:14:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2095688119, now seen corresponding path program 1 times [2022-01-19 00:14:56,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:14:56,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390164726] [2022-01-19 00:14:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:14:56,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:14:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:14:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:14:56,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:14:56,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390164726] [2022-01-19 00:14:56,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390164726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:14:56,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:14:56,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 00:14:56,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878216306] [2022-01-19 00:14:56,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:14:56,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 00:14:56,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:14:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 00:14:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 00:14:56,531 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 00:14:56,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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) [2022-01-19 00:14:56,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:14:56,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 00:14:56,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:14:56,917 INFO L129 PetriNetUnfolder]: 1645/2775 cut-off events. [2022-01-19 00:14:56,917 INFO L130 PetriNetUnfolder]: For 410/472 co-relation queries the response was YES. [2022-01-19 00:14:56,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5882 conditions, 2775 events. 1645/2775 cut-off events. For 410/472 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 15426 event pairs, 251 based on Foata normal form. 0/2123 useless extension candidates. Maximal degree in co-relation 5875. Up to 1840 conditions per place. [2022-01-19 00:14:56,941 INFO L132 encePairwiseOnDemand]: 118/129 looper letters, 60 selfloop transitions, 13 changer transitions 1/136 dead transitions. [2022-01-19 00:14:56,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 136 transitions, 483 flow [2022-01-19 00:14:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:14:56,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:14:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2022-01-19 00:14:56,943 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7028423772609819 [2022-01-19 00:14:56,943 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2022-01-19 00:14:56,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2022-01-19 00:14:56,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:14:56,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2022-01-19 00:14:56,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 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) [2022-01-19 00:14:56,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-01-19 00:14:56,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-01-19 00:14:56,947 INFO L186 Difference]: Start difference. First operand has 115 places, 108 transitions, 257 flow. Second operand 6 states and 544 transitions. [2022-01-19 00:14:56,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 136 transitions, 483 flow [2022-01-19 00:14:56,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 466 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-01-19 00:14:56,952 INFO L242 Difference]: Finished difference. Result has 115 places, 114 transitions, 311 flow [2022-01-19 00:14:56,952 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2022-01-19 00:14:56,952 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 0 predicate places. [2022-01-19 00:14:56,953 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 311 flow [2022-01-19 00:14:56,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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) [2022-01-19 00:14:56,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:14:56,953 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:14:56,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 00:14:56,954 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:14:56,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:14:56,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1439782455, now seen corresponding path program 2 times [2022-01-19 00:14:56,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:14:56,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958768651] [2022-01-19 00:14:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:14:56,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:14:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:14:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:14:57,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:14:57,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958768651] [2022-01-19 00:14:57,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958768651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:14:57,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:14:57,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 00:14:57,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441683826] [2022-01-19 00:14:57,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:14:57,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 00:14:57,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:14:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 00:14:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 00:14:57,149 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 00:14:57,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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) [2022-01-19 00:14:57,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:14:57,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 00:14:57,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:14:57,601 INFO L129 PetriNetUnfolder]: 1568/2655 cut-off events. [2022-01-19 00:14:57,603 INFO L130 PetriNetUnfolder]: For 969/1016 co-relation queries the response was YES. [2022-01-19 00:14:57,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6238 conditions, 2655 events. 1568/2655 cut-off events. For 969/1016 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 14367 event pairs, 348 based on Foata normal form. 26/2273 useless extension candidates. Maximal degree in co-relation 6231. Up to 1799 conditions per place. [2022-01-19 00:14:57,623 INFO L132 encePairwiseOnDemand]: 118/129 looper letters, 61 selfloop transitions, 13 changer transitions 2/138 dead transitions. [2022-01-19 00:14:57,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 138 transitions, 533 flow [2022-01-19 00:14:57,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:14:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:14:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 542 transitions. [2022-01-19 00:14:57,626 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7002583979328165 [2022-01-19 00:14:57,626 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 542 transitions. [2022-01-19 00:14:57,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 542 transitions. [2022-01-19 00:14:57,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:14:57,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 542 transitions. [2022-01-19 00:14:57,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 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) [2022-01-19 00:14:57,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-01-19 00:14:57,630 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-01-19 00:14:57,631 INFO L186 Difference]: Start difference. First operand has 115 places, 114 transitions, 311 flow. Second operand 6 states and 542 transitions. [2022-01-19 00:14:57,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 138 transitions, 533 flow [2022-01-19 00:14:57,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 138 transitions, 511 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 00:14:57,637 INFO L242 Difference]: Finished difference. Result has 118 places, 116 transitions, 344 flow [2022-01-19 00:14:57,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=118, PETRI_TRANSITIONS=116} [2022-01-19 00:14:57,639 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 3 predicate places. [2022-01-19 00:14:57,639 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 116 transitions, 344 flow [2022-01-19 00:14:57,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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) [2022-01-19 00:14:57,640 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:14:57,640 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:14:57,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 00:14:57,640 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:14:57,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:14:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash -289692152, now seen corresponding path program 1 times [2022-01-19 00:14:57,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:14:57,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253967567] [2022-01-19 00:14:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:14:57,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:14:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:14:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:14:57,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:14:57,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253967567] [2022-01-19 00:14:57,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253967567] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 00:14:57,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088083806] [2022-01-19 00:14:57,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:14:57,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 00:14:57,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 00:14:57,903 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) [2022-01-19 00:14:57,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 00:14:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:14:58,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 00:14:58,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 00:14:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:14:58,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 00:14:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:14:58,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088083806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 00:14:58,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 00:14:58,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-01-19 00:14:58,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812966449] [2022-01-19 00:14:58,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 00:14:58,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:14:58,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:14:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:14:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:14:58,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 00:14:58,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 116 transitions, 344 flow. Second operand has 14 states, 14 states have (on average 82.64285714285714) internal successors, (1157), 14 states have internal predecessors, (1157), 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) [2022-01-19 00:14:58,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:14:58,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 00:14:58,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:14:59,927 INFO L129 PetriNetUnfolder]: 2935/5102 cut-off events. [2022-01-19 00:14:59,927 INFO L130 PetriNetUnfolder]: For 2538/2572 co-relation queries the response was YES. [2022-01-19 00:14:59,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12363 conditions, 5102 events. 2935/5102 cut-off events. For 2538/2572 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 32037 event pairs, 402 based on Foata normal form. 127/4540 useless extension candidates. Maximal degree in co-relation 12354. Up to 1211 conditions per place. [2022-01-19 00:14:59,967 INFO L132 encePairwiseOnDemand]: 114/129 looper letters, 145 selfloop transitions, 28 changer transitions 2/237 dead transitions. [2022-01-19 00:14:59,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 237 transitions, 1062 flow [2022-01-19 00:14:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 00:14:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 00:14:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1267 transitions. [2022-01-19 00:14:59,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7015503875968992 [2022-01-19 00:14:59,971 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1267 transitions. [2022-01-19 00:14:59,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1267 transitions. [2022-01-19 00:14:59,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:14:59,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1267 transitions. [2022-01-19 00:14:59,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 90.5) internal successors, (1267), 14 states have internal predecessors, (1267), 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) [2022-01-19 00:14:59,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 129.0) internal successors, (1935), 15 states have internal predecessors, (1935), 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) [2022-01-19 00:14:59,979 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 129.0) internal successors, (1935), 15 states have internal predecessors, (1935), 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) [2022-01-19 00:14:59,979 INFO L186 Difference]: Start difference. First operand has 118 places, 116 transitions, 344 flow. Second operand 14 states and 1267 transitions. [2022-01-19 00:14:59,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 237 transitions, 1062 flow [2022-01-19 00:14:59,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 237 transitions, 1025 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-01-19 00:14:59,993 INFO L242 Difference]: Finished difference. Result has 135 places, 128 transitions, 486 flow [2022-01-19 00:14:59,994 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=486, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2022-01-19 00:14:59,996 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 20 predicate places. [2022-01-19 00:14:59,996 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 486 flow [2022-01-19 00:14:59,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.64285714285714) internal successors, (1157), 14 states have internal predecessors, (1157), 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) [2022-01-19 00:14:59,997 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:14:59,997 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:15:00,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 00:15:00,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 00:15:00,220 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:15:00,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:15:00,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1112995835, now seen corresponding path program 3 times [2022-01-19 00:15:00,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:15:00,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616363057] [2022-01-19 00:15:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:15:00,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:15:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:15:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:15:00,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:15:00,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616363057] [2022-01-19 00:15:00,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616363057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:15:00,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:15:00,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 00:15:00,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145674028] [2022-01-19 00:15:00,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:15:00,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 00:15:00,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:15:00,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 00:15:00,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-19 00:15:00,391 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 00:15:00,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 486 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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) [2022-01-19 00:15:00,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:15:00,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 00:15:00,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:15:01,010 INFO L129 PetriNetUnfolder]: 3245/5392 cut-off events. [2022-01-19 00:15:01,011 INFO L130 PetriNetUnfolder]: For 7270/7305 co-relation queries the response was YES. [2022-01-19 00:15:01,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15794 conditions, 5392 events. 3245/5392 cut-off events. For 7270/7305 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32477 event pairs, 835 based on Foata normal form. 84/4718 useless extension candidates. Maximal degree in co-relation 15779. Up to 2724 conditions per place. [2022-01-19 00:15:01,054 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 88 selfloop transitions, 17 changer transitions 2/169 dead transitions. [2022-01-19 00:15:01,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 169 transitions, 867 flow [2022-01-19 00:15:01,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:15:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:15:01,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 635 transitions. [2022-01-19 00:15:01,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7032115171650055 [2022-01-19 00:15:01,057 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 635 transitions. [2022-01-19 00:15:01,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 635 transitions. [2022-01-19 00:15:01,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:15:01,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 635 transitions. [2022-01-19 00:15:01,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 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) [2022-01-19 00:15:01,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2022-01-19 00:15:01,061 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2022-01-19 00:15:01,061 INFO L186 Difference]: Start difference. First operand has 135 places, 128 transitions, 486 flow. Second operand 7 states and 635 transitions. [2022-01-19 00:15:01,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 169 transitions, 867 flow [2022-01-19 00:15:01,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 169 transitions, 840 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-01-19 00:15:01,088 INFO L242 Difference]: Finished difference. Result has 138 places, 129 transitions, 522 flow [2022-01-19 00:15:01,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=138, PETRI_TRANSITIONS=129} [2022-01-19 00:15:01,089 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 23 predicate places. [2022-01-19 00:15:01,089 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 129 transitions, 522 flow [2022-01-19 00:15:01,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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) [2022-01-19 00:15:01,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:15:01,089 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:15:01,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 00:15:01,090 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:15:01,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:15:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1950645235, now seen corresponding path program 1 times [2022-01-19 00:15:01,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:15:01,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031749043] [2022-01-19 00:15:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:15:01,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:15:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:15:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:15:01,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:15:01,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031749043] [2022-01-19 00:15:01,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031749043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:15:01,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:15:01,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 00:15:01,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567033698] [2022-01-19 00:15:01,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:15:01,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 00:15:01,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:15:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 00:15:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 00:15:01,229 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 00:15:01,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 129 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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) [2022-01-19 00:15:01,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:15:01,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 00:15:01,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:15:01,842 INFO L129 PetriNetUnfolder]: 3216/5334 cut-off events. [2022-01-19 00:15:01,842 INFO L130 PetriNetUnfolder]: For 10161/10223 co-relation queries the response was YES. [2022-01-19 00:15:01,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16884 conditions, 5334 events. 3216/5334 cut-off events. For 10161/10223 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32411 event pairs, 1031 based on Foata normal form. 2/4612 useless extension candidates. Maximal degree in co-relation 16867. Up to 4108 conditions per place. [2022-01-19 00:15:01,887 INFO L132 encePairwiseOnDemand]: 118/129 looper letters, 80 selfloop transitions, 21 changer transitions 2/165 dead transitions. [2022-01-19 00:15:01,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 165 transitions, 978 flow [2022-01-19 00:15:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:15:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:15:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2022-01-19 00:15:01,894 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7028423772609819 [2022-01-19 00:15:01,894 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2022-01-19 00:15:01,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2022-01-19 00:15:01,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:15:01,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2022-01-19 00:15:01,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 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) [2022-01-19 00:15:01,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-01-19 00:15:01,898 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-01-19 00:15:01,898 INFO L186 Difference]: Start difference. First operand has 138 places, 129 transitions, 522 flow. Second operand 6 states and 544 transitions. [2022-01-19 00:15:01,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 165 transitions, 978 flow [2022-01-19 00:15:01,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 165 transitions, 949 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 00:15:01,932 INFO L242 Difference]: Finished difference. Result has 141 places, 139 transitions, 668 flow [2022-01-19 00:15:01,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=668, PETRI_PLACES=141, PETRI_TRANSITIONS=139} [2022-01-19 00:15:01,933 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 26 predicate places. [2022-01-19 00:15:01,934 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 139 transitions, 668 flow [2022-01-19 00:15:01,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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) [2022-01-19 00:15:01,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:15:01,935 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:15:01,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 00:15:01,935 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:15:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:15:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 875749367, now seen corresponding path program 2 times [2022-01-19 00:15:01,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:15:01,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240735011] [2022-01-19 00:15:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:15:01,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:15:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:15:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:15:02,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:15:02,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240735011] [2022-01-19 00:15:02,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240735011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:15:02,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:15:02,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 00:15:02,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735000094] [2022-01-19 00:15:02,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:15:02,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 00:15:02,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:15:02,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 00:15:02,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 00:15:02,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 00:15:02,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 139 transitions, 668 flow. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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) [2022-01-19 00:15:02,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:15:02,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 00:15:02,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:15:02,622 INFO L129 PetriNetUnfolder]: 3137/5160 cut-off events. [2022-01-19 00:15:02,622 INFO L130 PetriNetUnfolder]: For 10173/10194 co-relation queries the response was YES. [2022-01-19 00:15:02,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17462 conditions, 5160 events. 3137/5160 cut-off events. For 10173/10194 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 31236 event pairs, 783 based on Foata normal form. 22/5026 useless extension candidates. Maximal degree in co-relation 17442. Up to 4065 conditions per place. [2022-01-19 00:15:02,674 INFO L132 encePairwiseOnDemand]: 118/129 looper letters, 82 selfloop transitions, 17 changer transitions 2/163 dead transitions. [2022-01-19 00:15:02,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 163 transitions, 976 flow [2022-01-19 00:15:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:15:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:15:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 542 transitions. [2022-01-19 00:15:02,676 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7002583979328165 [2022-01-19 00:15:02,677 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 542 transitions. [2022-01-19 00:15:02,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 542 transitions. [2022-01-19 00:15:02,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:15:02,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 542 transitions. [2022-01-19 00:15:02,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 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) [2022-01-19 00:15:02,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-01-19 00:15:02,680 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-01-19 00:15:02,680 INFO L186 Difference]: Start difference. First operand has 141 places, 139 transitions, 668 flow. Second operand 6 states and 542 transitions. [2022-01-19 00:15:02,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 163 transitions, 976 flow [2022-01-19 00:15:02,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 163 transitions, 959 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 00:15:02,720 INFO L242 Difference]: Finished difference. Result has 145 places, 137 transitions, 662 flow [2022-01-19 00:15:02,720 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=662, PETRI_PLACES=145, PETRI_TRANSITIONS=137} [2022-01-19 00:15:02,721 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 30 predicate places. [2022-01-19 00:15:02,721 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 137 transitions, 662 flow [2022-01-19 00:15:02,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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) [2022-01-19 00:15:02,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:15:02,722 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:15:02,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 00:15:02,722 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:15:02,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:15:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1833408498, now seen corresponding path program 1 times [2022-01-19 00:15:02,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:15:02,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488637270] [2022-01-19 00:15:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:15:02,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:15:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:15:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:15:02,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:15:02,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488637270] [2022-01-19 00:15:02,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488637270] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 00:15:02,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723719064] [2022-01-19 00:15:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:15:02,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 00:15:02,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 00:15:02,899 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) [2022-01-19 00:15:02,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 00:15:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:15:02,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 00:15:02,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 00:15:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:15:03,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 00:15:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:15:03,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723719064] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 00:15:03,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 00:15:03,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-01-19 00:15:03,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066924510] [2022-01-19 00:15:03,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 00:15:03,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:15:03,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:15:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:15:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:15:03,689 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 00:15:03,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 137 transitions, 662 flow. Second operand has 14 states, 14 states have (on average 82.07142857142857) internal successors, (1149), 14 states have internal predecessors, (1149), 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) [2022-01-19 00:15:03,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:15:03,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 00:15:03,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:15:05,175 INFO L129 PetriNetUnfolder]: 6276/10416 cut-off events. [2022-01-19 00:15:05,176 INFO L130 PetriNetUnfolder]: For 26456/26511 co-relation queries the response was YES. [2022-01-19 00:15:05,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36261 conditions, 10416 events. 6276/10416 cut-off events. For 26456/26511 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 72818 event pairs, 1406 based on Foata normal form. 314/10464 useless extension candidates. Maximal degree in co-relation 36239. Up to 3503 conditions per place. [2022-01-19 00:15:05,262 INFO L132 encePairwiseOnDemand]: 114/129 looper letters, 224 selfloop transitions, 32 changer transitions 2/320 dead transitions. [2022-01-19 00:15:05,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 320 transitions, 2354 flow [2022-01-19 00:15:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 00:15:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 00:15:05,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1267 transitions. [2022-01-19 00:15:05,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7015503875968992 [2022-01-19 00:15:05,265 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1267 transitions. [2022-01-19 00:15:05,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1267 transitions. [2022-01-19 00:15:05,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:15:05,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1267 transitions. [2022-01-19 00:15:05,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 90.5) internal successors, (1267), 14 states have internal predecessors, (1267), 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) [2022-01-19 00:15:05,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 129.0) internal successors, (1935), 15 states have internal predecessors, (1935), 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) [2022-01-19 00:15:05,272 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 129.0) internal successors, (1935), 15 states have internal predecessors, (1935), 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) [2022-01-19 00:15:05,272 INFO L186 Difference]: Start difference. First operand has 145 places, 137 transitions, 662 flow. Second operand 14 states and 1267 transitions. [2022-01-19 00:15:05,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 320 transitions, 2354 flow [2022-01-19 00:15:05,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 320 transitions, 2313 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-01-19 00:15:05,336 INFO L242 Difference]: Finished difference. Result has 162 places, 149 transitions, 816 flow [2022-01-19 00:15:05,336 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=816, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2022-01-19 00:15:05,337 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 47 predicate places. [2022-01-19 00:15:05,337 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 816 flow [2022-01-19 00:15:05,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.07142857142857) internal successors, (1149), 14 states have internal predecessors, (1149), 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) [2022-01-19 00:15:05,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:15:05,338 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:15:05,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 00:15:05,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-19 00:15:05,552 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:15:05,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:15:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash 381671547, now seen corresponding path program 3 times [2022-01-19 00:15:05,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:15:05,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078010993] [2022-01-19 00:15:05,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:15:05,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:15:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:15:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:15:05,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:15:05,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078010993] [2022-01-19 00:15:05,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078010993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:15:05,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:15:05,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 00:15:05,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176681718] [2022-01-19 00:15:05,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:15:05,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 00:15:05,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:15:05,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 00:15:05,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-19 00:15:05,824 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-01-19 00:15:05,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 816 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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) [2022-01-19 00:15:05,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:15:05,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-01-19 00:15:05,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:15:06,980 INFO L129 PetriNetUnfolder]: 6954/11287 cut-off events. [2022-01-19 00:15:06,980 INFO L130 PetriNetUnfolder]: For 41762/41780 co-relation queries the response was YES. [2022-01-19 00:15:07,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45133 conditions, 11287 events. 6954/11287 cut-off events. For 41762/41780 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 77533 event pairs, 2720 based on Foata normal form. 204/11218 useless extension candidates. Maximal degree in co-relation 45105. Up to 6746 conditions per place. [2022-01-19 00:15:07,080 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 120 selfloop transitions, 21 changer transitions 2/205 dead transitions. [2022-01-19 00:15:07,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 205 transitions, 1491 flow [2022-01-19 00:15:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:15:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:15:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 635 transitions. [2022-01-19 00:15:07,086 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7032115171650055 [2022-01-19 00:15:07,086 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 635 transitions. [2022-01-19 00:15:07,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 635 transitions. [2022-01-19 00:15:07,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:15:07,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 635 transitions. [2022-01-19 00:15:07,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 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) [2022-01-19 00:15:07,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2022-01-19 00:15:07,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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) [2022-01-19 00:15:07,090 INFO L186 Difference]: Start difference. First operand has 162 places, 149 transitions, 816 flow. Second operand 7 states and 635 transitions. [2022-01-19 00:15:07,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 205 transitions, 1491 flow [2022-01-19 00:15:07,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 205 transitions, 1458 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-01-19 00:15:07,272 INFO L242 Difference]: Finished difference. Result has 165 places, 150 transitions, 858 flow [2022-01-19 00:15:07,273 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=858, PETRI_PLACES=165, PETRI_TRANSITIONS=150} [2022-01-19 00:15:07,274 INFO L334 CegarLoopForPetriNet]: 115 programPoint places, 50 predicate places. [2022-01-19 00:15:07,274 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 150 transitions, 858 flow [2022-01-19 00:15:07,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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) [2022-01-19 00:15:07,275 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:15:07,275 INFO L254 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] [2022-01-19 00:15:07,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 00:15:07,275 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 00:15:07,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:15:07,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1676109041, now seen corresponding path program 1 times [2022-01-19 00:15:07,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:15:07,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347809103] [2022-01-19 00:15:07,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:15:07,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:15:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:15:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:15:08,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:15:08,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347809103] [2022-01-19 00:15:08,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347809103] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 00:15:08,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901997093] [2022-01-19 00:15:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:15:08,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 00:15:08,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 00:15:08,568 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) [2022-01-19 00:15:08,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 00:15:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:15:26,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-19 00:15:26,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 00:16:55,919 INFO L884 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:16:56,271 INFO L884 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:16:56,502 INFO L884 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:16:56,852 INFO L884 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:16:57,379 INFO L884 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:16:58,092 INFO L884 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:16:58,995 INFO L884 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:16:59,910 INFO L884 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:01,092 INFO L884 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:02,492 INFO L884 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:04,189 INFO L884 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:06,251 INFO L884 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:08,641 INFO L884 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:11,445 INFO L884 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:14,673 INFO L884 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:18,362 INFO L884 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:22,528 INFO L884 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:27,289 INFO L884 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:32,549 INFO L884 QuantifierPusher]: Run 190 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:38,438 INFO L884 QuantifierPusher]: Run 200 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:44,966 INFO L884 QuantifierPusher]: Run 210 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:17:52,169 INFO L884 QuantifierPusher]: Run 220 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:18:00,079 INFO L884 QuantifierPusher]: Run 230 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:18:08,748 INFO L884 QuantifierPusher]: Run 240 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:18:18,158 INFO L884 QuantifierPusher]: Run 250 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:18:28,348 INFO L884 QuantifierPusher]: Run 260 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:18:39,400 INFO L884 QuantifierPusher]: Run 270 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:18:51,347 INFO L884 QuantifierPusher]: Run 280 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:19:04,149 INFO L884 QuantifierPusher]: Run 290 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:19:17,814 INFO L884 QuantifierPusher]: Run 300 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:19:32,422 INFO L884 QuantifierPusher]: Run 310 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:19:48,080 INFO L884 QuantifierPusher]: Run 320 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:20:04,752 INFO L884 QuantifierPusher]: Run 330 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:20:22,475 INFO L884 QuantifierPusher]: Run 340 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:20:41,239 INFO L884 QuantifierPusher]: Run 350 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:21:01,143 INFO L884 QuantifierPusher]: Run 360 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:21:22,141 INFO L884 QuantifierPusher]: Run 370 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:21:44,390 INFO L884 QuantifierPusher]: Run 380 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:22:07,754 INFO L884 QuantifierPusher]: Run 390 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:22:32,515 INFO L884 QuantifierPusher]: Run 400 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:22:58,572 INFO L884 QuantifierPusher]: Run 410 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:23:26,005 INFO L884 QuantifierPusher]: Run 420 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:23:54,844 INFO L884 QuantifierPusher]: Run 430 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:24:25,023 INFO L884 QuantifierPusher]: Run 440 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:24:56,503 INFO L884 QuantifierPusher]: Run 450 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:25:29,584 INFO L884 QuantifierPusher]: Run 460 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:26:04,073 INFO L884 QuantifierPusher]: Run 470 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:26:40,103 INFO L884 QuantifierPusher]: Run 480 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:27:17,921 INFO L884 QuantifierPusher]: Run 490 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:27:57,058 INFO L884 QuantifierPusher]: Run 500 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:28:38,095 INFO L884 QuantifierPusher]: Run 510 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 00:29:20,360 INFO L884 QuantifierPusher]: Run 520 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... [2022-01-19 00:29:26,193 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 00:29:26,193 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 [2022-01-19 00:29:27,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-19 00:29:27,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2022-01-19 00:29:28,476 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-19 00:29:28,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 00:29:28,477 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2022-01-19 00:29:28,478 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-19 00:29:28,478 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-01-19 00:29:28,478 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-01-19 00:29:28,478 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-01-19 00:29:28,481 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1] [2022-01-19 00:29:28,483 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 00:29:28,483 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 00:29:28,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 12:29:28 BasicIcfg [2022-01-19 00:29:28,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 00:29:28,486 INFO L158 Benchmark]: Toolchain (without parser) took 874722.88ms. Allocated memory was 364.9MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 311.7MB in the beginning and 1.1GB in the end (delta: -804.3MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2022-01-19 00:29:28,486 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 364.9MB. Free memory is still 329.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 00:29:28,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.02ms. Allocated memory is still 364.9MB. Free memory was 311.5MB in the beginning and 337.2MB in the end (delta: -25.7MB). Peak memory consumption was 19.4MB. Max. memory is 16.0GB. [2022-01-19 00:29:28,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.38ms. Allocated memory is still 364.9MB. Free memory was 337.2MB in the beginning and 335.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 00:29:28,487 INFO L158 Benchmark]: Boogie Preprocessor took 32.53ms. Allocated memory is still 364.9MB. Free memory was 335.1MB in the beginning and 334.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 00:29:28,487 INFO L158 Benchmark]: RCFGBuilder took 420.45ms. Allocated memory is still 364.9MB. Free memory was 334.0MB in the beginning and 319.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 00:29:28,487 INFO L158 Benchmark]: TraceAbstraction took 873985.90ms. Allocated memory was 364.9MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 319.4MB in the beginning and 1.1GB in the end (delta: -796.7MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2022-01-19 00:29:28,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 364.9MB. Free memory is still 329.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 237.02ms. Allocated memory is still 364.9MB. Free memory was 311.5MB in the beginning and 337.2MB in the end (delta: -25.7MB). Peak memory consumption was 19.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.38ms. Allocated memory is still 364.9MB. Free memory was 337.2MB in the beginning and 335.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.53ms. Allocated memory is still 364.9MB. Free memory was 335.1MB in the beginning and 334.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 420.45ms. Allocated memory is still 364.9MB. Free memory was 334.0MB in the beginning and 319.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 873985.90ms. Allocated memory was 364.9MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 319.4MB in the beginning and 1.1GB in the end (delta: -796.7MB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - 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 CegarLoopForPetriNet was analyzing trace of length 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 148 locations, 5 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: 873.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 920 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 920 mSDsluCounter, 480 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 729 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1972 IncrementalHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 192 mSDtfsCounter, 1972 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 380 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=858occurred in iteration=10, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1134 NumberOfCodeBlocks, 1134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1310 ConstructedInterpolants, 0 QuantifiedInterpolants, 16646 SizeOfPredicates, 20 NumberOfNonLiveVariables, 506 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 6/12 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