/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:30:59,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:30:59,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:30:59,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:30:59,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:30:59,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:30:59,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:30:59,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:30:59,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:30:59,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:30:59,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:30:59,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:30:59,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:30:59,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:30:59,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:30:59,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:30:59,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:30:59,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:30:59,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:30:59,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:30:59,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:30:59,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:30:59,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:30:59,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:30:59,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:30:59,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:30:59,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:30:59,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:30:59,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:30:59,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:30:59,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:30:59,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:30:59,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:30:59,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:30:59,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:30:59,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:30:59,947 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 [2021-06-13 07:30:59,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:30:59,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:30:59,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:30:59,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:30:59,977 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:30:59,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:30:59,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:30:59,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:30:59,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:30:59,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:30:59,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:30:59,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:30:59,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:30:59,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:30:59,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:30:59,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:30:59,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:30:59,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:30:59,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:30:59,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:30:59,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:30:59,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:30:59,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:30:59,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:30:59,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:30:59,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:30:59,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:30:59,981 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:30:59,981 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:30:59,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:31:00,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:31:00,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:31:00,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:31:00,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:31:00,297 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:31:00,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2021-06-13 07:31:00,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce6d77ff3/f29d103e2b4842b5857d7fc82db9f138/FLAG7bdd9269d [2021-06-13 07:31:00,926 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:31:00,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2021-06-13 07:31:00,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce6d77ff3/f29d103e2b4842b5857d7fc82db9f138/FLAG7bdd9269d [2021-06-13 07:31:01,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce6d77ff3/f29d103e2b4842b5857d7fc82db9f138 [2021-06-13 07:31:01,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:31:01,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:31:01,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:31:01,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:31:01,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:31:01,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32bf63f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01, skipping insertion in model container [2021-06-13 07:31:01,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:31:01,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:31:01,563 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i[949,962] [2021-06-13 07:31:01,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:31:01,750 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:31:01,765 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i[949,962] [2021-06-13 07:31:01,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:31:01,869 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:31:01,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01 WrapperNode [2021-06-13 07:31:01,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:31:01,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:31:01,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:31:01,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:31:01,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:31:01,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:31:01,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:31:01,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:31:01,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (1/1) ... [2021-06-13 07:31:01,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:31:01,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:31:01,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:31:01,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:31:01,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:31:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:31:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:31:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:31:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:31:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:31:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:31:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:31:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:31:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:31:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:31:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-06-13 07:31:02,009 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-06-13 07:31:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:31:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:31:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:31:02,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:31:02,011 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:31:02,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:31:02,330 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:31:02,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:31:02 BoogieIcfgContainer [2021-06-13 07:31:02,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:31:02,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:31:02,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:31:02,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:31:02,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:31:01" (1/3) ... [2021-06-13 07:31:02,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7310540a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:31:02, skipping insertion in model container [2021-06-13 07:31:02,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:01" (2/3) ... [2021-06-13 07:31:02,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7310540a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:31:02, skipping insertion in model container [2021-06-13 07:31:02,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:31:02" (3/3) ... [2021-06-13 07:31:02,338 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2021-06-13 07:31:02,343 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:31:02,343 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:31:02,344 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:31:02,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,368 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,368 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,369 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,369 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,370 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,370 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,370 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,370 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,371 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,371 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,371 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,371 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,371 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,371 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,372 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,372 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,372 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,373 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,373 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,374 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,374 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,374 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,374 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,374 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,374 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,374 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,374 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,375 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,375 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,375 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,375 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,377 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,377 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,377 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,378 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,381 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,381 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,383 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,383 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:02,386 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:31:02,404 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-13 07:31:02,424 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:31:02,424 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:31:02,424 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:31:02,425 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:31:02,425 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:31:02,425 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:31:02,425 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:31:02,425 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:31:02,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 97 transitions, 214 flow [2021-06-13 07:31:02,474 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-06-13 07:31:02,474 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:31:02,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-06-13 07:31:02,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 97 transitions, 214 flow [2021-06-13 07:31:02,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 79 transitions, 170 flow [2021-06-13 07:31:02,511 INFO L129 PetriNetUnfolder]: 1/78 cut-off events. [2021-06-13 07:31:02,511 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:31:02,511 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:02,512 INFO L255 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] [2021-06-13 07:31:02,512 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:02,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:02,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1675625032, now seen corresponding path program 1 times [2021-06-13 07:31:02,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:02,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007488723] [2021-06-13 07:31:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:02,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:02,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:02,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:02,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:02,938 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:02,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:02,962 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:02,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:02,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:02,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:03,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:03,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:03,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:03,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:03,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:03,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007488723] [2021-06-13 07:31:03,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007488723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:03,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:03,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:03,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542618142] [2021-06-13 07:31:03,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:03,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:03,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:03,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:03,061 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:03,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 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) [2021-06-13 07:31:03,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:03,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:03,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:03,591 INFO L129 PetriNetUnfolder]: 823/1731 cut-off events. [2021-06-13 07:31:03,591 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:31:03,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 1731 events. 823/1731 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11280 event pairs, 59 based on Foata normal form. 62/1726 useless extension candidates. Maximal degree in co-relation 2978. Up to 405 conditions per place. [2021-06-13 07:31:03,611 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 21 selfloop transitions, 8 changer transitions 56/147 dead transitions. [2021-06-13 07:31:03,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 147 transitions, 476 flow [2021-06-13 07:31:03,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1092 transitions. [2021-06-13 07:31:03,629 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.865979381443299 [2021-06-13 07:31:03,630 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1092 transitions. [2021-06-13 07:31:03,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1092 transitions. [2021-06-13 07:31:03,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:03,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1092 transitions. [2021-06-13 07:31:03,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 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) [2021-06-13 07:31:03,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:03,653 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:03,655 INFO L185 Difference]: Start difference. First operand has 91 places, 79 transitions, 170 flow. Second operand 13 states and 1092 transitions. [2021-06-13 07:31:03,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 147 transitions, 476 flow [2021-06-13 07:31:03,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 147 transitions, 472 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 07:31:03,665 INFO L241 Difference]: Finished difference. Result has 111 places, 83 transitions, 268 flow [2021-06-13 07:31:03,667 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=268, PETRI_PLACES=111, PETRI_TRANSITIONS=83} [2021-06-13 07:31:03,668 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2021-06-13 07:31:03,668 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 83 transitions, 268 flow [2021-06-13 07:31:03,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 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) [2021-06-13 07:31:03,669 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:03,669 INFO L255 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] [2021-06-13 07:31:03,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:31:03,669 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:03,671 INFO L82 PathProgramCache]: Analyzing trace with hash -728552423, now seen corresponding path program 1 times [2021-06-13 07:31:03,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:03,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780896826] [2021-06-13 07:31:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:03,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:03,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:03,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:03,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:03,827 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:03,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:03,842 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:03,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:03,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:03,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:03,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:03,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:03,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:03,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:03,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:03,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780896826] [2021-06-13 07:31:03,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780896826] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:03,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:03,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:03,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734115987] [2021-06-13 07:31:03,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:03,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:03,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:03,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:03,884 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:03,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 83 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 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) [2021-06-13 07:31:03,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:03,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:03,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:04,257 INFO L129 PetriNetUnfolder]: 522/1474 cut-off events. [2021-06-13 07:31:04,258 INFO L130 PetriNetUnfolder]: For 3195/5282 co-relation queries the response was YES. [2021-06-13 07:31:04,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 1474 events. 522/1474 cut-off events. For 3195/5282 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10860 event pairs, 7 based on Foata normal form. 41/1472 useless extension candidates. Maximal degree in co-relation 4642. Up to 401 conditions per place. [2021-06-13 07:31:04,274 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 24 selfloop transitions, 14 changer transitions 64/164 dead transitions. [2021-06-13 07:31:04,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 164 transitions, 1096 flow [2021-06-13 07:31:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1091 transitions. [2021-06-13 07:31:04,278 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8651863600317209 [2021-06-13 07:31:04,279 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1091 transitions. [2021-06-13 07:31:04,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1091 transitions. [2021-06-13 07:31:04,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:04,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1091 transitions. [2021-06-13 07:31:04,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.92307692307692) internal successors, (1091), 13 states have internal predecessors, (1091), 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) [2021-06-13 07:31:04,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:04,286 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:04,287 INFO L185 Difference]: Start difference. First operand has 111 places, 83 transitions, 268 flow. Second operand 13 states and 1091 transitions. [2021-06-13 07:31:04,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 164 transitions, 1096 flow [2021-06-13 07:31:04,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 164 transitions, 1068 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-13 07:31:04,302 INFO L241 Difference]: Finished difference. Result has 122 places, 92 transitions, 443 flow [2021-06-13 07:31:04,302 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=443, PETRI_PLACES=122, PETRI_TRANSITIONS=92} [2021-06-13 07:31:04,303 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 31 predicate places. [2021-06-13 07:31:04,303 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 92 transitions, 443 flow [2021-06-13 07:31:04,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 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) [2021-06-13 07:31:04,304 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:04,304 INFO L255 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] [2021-06-13 07:31:04,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:31:04,304 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:04,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:04,305 INFO L82 PathProgramCache]: Analyzing trace with hash -764102120, now seen corresponding path program 1 times [2021-06-13 07:31:04,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:04,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125691917] [2021-06-13 07:31:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:04,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:04,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:04,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:04,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:04,413 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:04,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:04,431 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:04,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:04,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:04,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:04,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:04,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:04,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:04,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:04,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:04,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125691917] [2021-06-13 07:31:04,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125691917] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:04,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:04,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:04,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495655472] [2021-06-13 07:31:04,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:04,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:04,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:04,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:04,474 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:04,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 92 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 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) [2021-06-13 07:31:04,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:04,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:04,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:04,771 INFO L129 PetriNetUnfolder]: 283/941 cut-off events. [2021-06-13 07:31:04,771 INFO L130 PetriNetUnfolder]: For 5106/7904 co-relation queries the response was YES. [2021-06-13 07:31:04,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3765 conditions, 941 events. 283/941 cut-off events. For 5106/7904 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6433 event pairs, 9 based on Foata normal form. 29/938 useless extension candidates. Maximal degree in co-relation 3707. Up to 226 conditions per place. [2021-06-13 07:31:04,782 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 28 selfloop transitions, 24 changer transitions 64/178 dead transitions. [2021-06-13 07:31:04,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 178 transitions, 1641 flow [2021-06-13 07:31:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:04,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1091 transitions. [2021-06-13 07:31:04,785 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8651863600317209 [2021-06-13 07:31:04,785 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1091 transitions. [2021-06-13 07:31:04,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1091 transitions. [2021-06-13 07:31:04,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:04,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1091 transitions. [2021-06-13 07:31:04,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.92307692307692) internal successors, (1091), 13 states have internal predecessors, (1091), 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) [2021-06-13 07:31:04,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:04,790 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:04,791 INFO L185 Difference]: Start difference. First operand has 122 places, 92 transitions, 443 flow. Second operand 13 states and 1091 transitions. [2021-06-13 07:31:04,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 178 transitions, 1641 flow [2021-06-13 07:31:04,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 178 transitions, 1593 flow, removed 24 selfloop flow, removed 0 redundant places. [2021-06-13 07:31:04,810 INFO L241 Difference]: Finished difference. Result has 137 places, 106 transitions, 738 flow [2021-06-13 07:31:04,810 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=738, PETRI_PLACES=137, PETRI_TRANSITIONS=106} [2021-06-13 07:31:04,810 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 46 predicate places. [2021-06-13 07:31:04,811 INFO L482 AbstractCegarLoop]: Abstraction has has 137 places, 106 transitions, 738 flow [2021-06-13 07:31:04,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 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) [2021-06-13 07:31:04,811 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:04,811 INFO L255 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] [2021-06-13 07:31:04,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:31:04,811 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:04,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:04,812 INFO L82 PathProgramCache]: Analyzing trace with hash -958265023, now seen corresponding path program 1 times [2021-06-13 07:31:04,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:04,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409559501] [2021-06-13 07:31:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:04,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:04,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:04,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:04,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:04,902 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:04,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:04,913 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:04,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:04,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:04,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:04,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:04,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:04,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:04,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:04,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:04,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409559501] [2021-06-13 07:31:04,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409559501] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:04,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:04,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:04,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803345819] [2021-06-13 07:31:04,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:04,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:04,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:04,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:04,949 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:04,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 106 transitions, 738 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-06-13 07:31:04,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:04,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:04,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:05,249 INFO L129 PetriNetUnfolder]: 160/696 cut-off events. [2021-06-13 07:31:05,249 INFO L130 PetriNetUnfolder]: For 5251/9840 co-relation queries the response was YES. [2021-06-13 07:31:05,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2989 conditions, 696 events. 160/696 cut-off events. For 5251/9840 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4590 event pairs, 7 based on Foata normal form. 26/694 useless extension candidates. Maximal degree in co-relation 2944. Up to 142 conditions per place. [2021-06-13 07:31:05,258 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 32 selfloop transitions, 29 changer transitions 29/152 dead transitions. [2021-06-13 07:31:05,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 152 transitions, 1481 flow [2021-06-13 07:31:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1062 transitions. [2021-06-13 07:31:05,262 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8421887390959556 [2021-06-13 07:31:05,262 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1062 transitions. [2021-06-13 07:31:05,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1062 transitions. [2021-06-13 07:31:05,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:05,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1062 transitions. [2021-06-13 07:31:05,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.6923076923077) internal successors, (1062), 13 states have internal predecessors, (1062), 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) [2021-06-13 07:31:05,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:05,269 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:05,269 INFO L185 Difference]: Start difference. First operand has 137 places, 106 transitions, 738 flow. Second operand 13 states and 1062 transitions. [2021-06-13 07:31:05,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 152 transitions, 1481 flow [2021-06-13 07:31:05,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 152 transitions, 1345 flow, removed 68 selfloop flow, removed 9 redundant places. [2021-06-13 07:31:05,285 INFO L241 Difference]: Finished difference. Result has 143 places, 113 transitions, 929 flow [2021-06-13 07:31:05,285 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=929, PETRI_PLACES=143, PETRI_TRANSITIONS=113} [2021-06-13 07:31:05,286 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 52 predicate places. [2021-06-13 07:31:05,286 INFO L482 AbstractCegarLoop]: Abstraction has has 143 places, 113 transitions, 929 flow [2021-06-13 07:31:05,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-06-13 07:31:05,286 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:05,286 INFO L255 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] [2021-06-13 07:31:05,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:31:05,287 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:05,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:05,287 INFO L82 PathProgramCache]: Analyzing trace with hash -511862955, now seen corresponding path program 1 times [2021-06-13 07:31:05,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:05,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89341768] [2021-06-13 07:31:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:05,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:05,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:05,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:05,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:05,338 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:05,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:05,347 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:05,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:05,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:05,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:05,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:05,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:05,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:05,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:05,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:05,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89341768] [2021-06-13 07:31:05,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89341768] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:05,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:05,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:05,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152538186] [2021-06-13 07:31:05,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:05,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:05,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:05,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:05,386 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:05,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 113 transitions, 929 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-06-13 07:31:05,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:05,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:05,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:05,656 INFO L129 PetriNetUnfolder]: 130/567 cut-off events. [2021-06-13 07:31:05,656 INFO L130 PetriNetUnfolder]: For 5864/10237 co-relation queries the response was YES. [2021-06-13 07:31:05,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 567 events. 130/567 cut-off events. For 5864/10237 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3346 event pairs, 11 based on Foata normal form. 32/580 useless extension candidates. Maximal degree in co-relation 2705. Up to 111 conditions per place. [2021-06-13 07:31:05,664 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 34 selfloop transitions, 30 changer transitions 35/161 dead transitions. [2021-06-13 07:31:05,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 1854 flow [2021-06-13 07:31:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1061 transitions. [2021-06-13 07:31:05,668 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8413957176843775 [2021-06-13 07:31:05,668 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1061 transitions. [2021-06-13 07:31:05,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1061 transitions. [2021-06-13 07:31:05,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:05,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1061 transitions. [2021-06-13 07:31:05,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.61538461538461) internal successors, (1061), 13 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:31:05,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:05,675 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:05,675 INFO L185 Difference]: Start difference. First operand has 143 places, 113 transitions, 929 flow. Second operand 13 states and 1061 transitions. [2021-06-13 07:31:05,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 1854 flow [2021-06-13 07:31:05,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 161 transitions, 1754 flow, removed 50 selfloop flow, removed 10 redundant places. [2021-06-13 07:31:05,692 INFO L241 Difference]: Finished difference. Result has 148 places, 118 transitions, 1123 flow [2021-06-13 07:31:05,692 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1123, PETRI_PLACES=148, PETRI_TRANSITIONS=118} [2021-06-13 07:31:05,693 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 57 predicate places. [2021-06-13 07:31:05,693 INFO L482 AbstractCegarLoop]: Abstraction has has 148 places, 118 transitions, 1123 flow [2021-06-13 07:31:05,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-06-13 07:31:05,694 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:05,694 INFO L255 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] [2021-06-13 07:31:05,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:31:05,694 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:05,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:05,694 INFO L82 PathProgramCache]: Analyzing trace with hash -41711977, now seen corresponding path program 1 times [2021-06-13 07:31:05,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:05,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497339768] [2021-06-13 07:31:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:05,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:05,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:05,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:05,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:05,757 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:05,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:05,767 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:05,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:05,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:05,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:05,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:05,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:05,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:05,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:05,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:05,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497339768] [2021-06-13 07:31:05,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497339768] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:05,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:05,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:05,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554706708] [2021-06-13 07:31:05,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:05,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:05,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:05,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:05,806 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:05,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 118 transitions, 1123 flow. Second operand has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2021-06-13 07:31:05,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:05,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:05,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:06,053 INFO L129 PetriNetUnfolder]: 95/533 cut-off events. [2021-06-13 07:31:06,054 INFO L130 PetriNetUnfolder]: For 6541/12375 co-relation queries the response was YES. [2021-06-13 07:31:06,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2567 conditions, 533 events. 95/533 cut-off events. For 6541/12375 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3260 event pairs, 7 based on Foata normal form. 40/552 useless extension candidates. Maximal degree in co-relation 2527. Up to 87 conditions per place. [2021-06-13 07:31:06,061 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 32 selfloop transitions, 32 changer transitions 27/153 dead transitions. [2021-06-13 07:31:06,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 153 transitions, 1846 flow [2021-06-13 07:31:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:06,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1056 transitions. [2021-06-13 07:31:06,063 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8374306106264869 [2021-06-13 07:31:06,063 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1056 transitions. [2021-06-13 07:31:06,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1056 transitions. [2021-06-13 07:31:06,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:06,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1056 transitions. [2021-06-13 07:31:06,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.23076923076923) internal successors, (1056), 13 states have internal predecessors, (1056), 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) [2021-06-13 07:31:06,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:06,069 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:06,069 INFO L185 Difference]: Start difference. First operand has 148 places, 118 transitions, 1123 flow. Second operand 13 states and 1056 transitions. [2021-06-13 07:31:06,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 153 transitions, 1846 flow [2021-06-13 07:31:06,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 153 transitions, 1691 flow, removed 75 selfloop flow, removed 12 redundant places. [2021-06-13 07:31:06,086 INFO L241 Difference]: Finished difference. Result has 151 places, 116 transitions, 1184 flow [2021-06-13 07:31:06,086 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1184, PETRI_PLACES=151, PETRI_TRANSITIONS=116} [2021-06-13 07:31:06,086 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2021-06-13 07:31:06,086 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 116 transitions, 1184 flow [2021-06-13 07:31:06,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2021-06-13 07:31:06,087 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:06,087 INFO L255 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] [2021-06-13 07:31:06,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:31:06,087 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:06,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:06,088 INFO L82 PathProgramCache]: Analyzing trace with hash 689062632, now seen corresponding path program 1 times [2021-06-13 07:31:06,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:06,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751840028] [2021-06-13 07:31:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:06,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:06,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:06,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:06,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:06,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:06,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:06,140 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:06,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:06,152 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:06,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:06,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:06,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:06,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:06,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:06,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:06,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:06,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:06,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751840028] [2021-06-13 07:31:06,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751840028] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:06,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:06,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:31:06,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000282706] [2021-06-13 07:31:06,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:31:06,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:06,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:31:06,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:31:06,218 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:06,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 116 transitions, 1184 flow. Second operand has 8 states, 8 states have (on average 78.75) internal successors, (630), 8 states have internal predecessors, (630), 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) [2021-06-13 07:31:06,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:06,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:06,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:06,390 INFO L129 PetriNetUnfolder]: 91/585 cut-off events. [2021-06-13 07:31:06,390 INFO L130 PetriNetUnfolder]: For 7831/14508 co-relation queries the response was YES. [2021-06-13 07:31:06,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 585 events. 91/585 cut-off events. For 7831/14508 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3796 event pairs, 1 based on Foata normal form. 41/607 useless extension candidates. Maximal degree in co-relation 2769. Up to 84 conditions per place. [2021-06-13 07:31:06,397 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 28 selfloop transitions, 19 changer transitions 46/155 dead transitions. [2021-06-13 07:31:06,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 155 transitions, 2068 flow [2021-06-13 07:31:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:31:06,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:31:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 663 transitions. [2021-06-13 07:31:06,399 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.854381443298969 [2021-06-13 07:31:06,399 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 663 transitions. [2021-06-13 07:31:06,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 663 transitions. [2021-06-13 07:31:06,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:06,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 663 transitions. [2021-06-13 07:31:06,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.875) internal successors, (663), 8 states have internal predecessors, (663), 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) [2021-06-13 07:31:06,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 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) [2021-06-13 07:31:06,403 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 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) [2021-06-13 07:31:06,403 INFO L185 Difference]: Start difference. First operand has 151 places, 116 transitions, 1184 flow. Second operand 8 states and 663 transitions. [2021-06-13 07:31:06,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 155 transitions, 2068 flow [2021-06-13 07:31:06,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 155 transitions, 1992 flow, removed 38 selfloop flow, removed 9 redundant places. [2021-06-13 07:31:06,419 INFO L241 Difference]: Finished difference. Result has 144 places, 100 transitions, 851 flow [2021-06-13 07:31:06,420 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=851, PETRI_PLACES=144, PETRI_TRANSITIONS=100} [2021-06-13 07:31:06,420 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 53 predicate places. [2021-06-13 07:31:06,420 INFO L482 AbstractCegarLoop]: Abstraction has has 144 places, 100 transitions, 851 flow [2021-06-13 07:31:06,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 78.75) internal successors, (630), 8 states have internal predecessors, (630), 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) [2021-06-13 07:31:06,421 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:06,421 INFO L255 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] [2021-06-13 07:31:06,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:31:06,421 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:06,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1621555562, now seen corresponding path program 2 times [2021-06-13 07:31:06,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:06,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311994136] [2021-06-13 07:31:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:06,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:06,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:06,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:06,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:06,458 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:31:06,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:31:06,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:06,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:31:06,480 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:31:06,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:06,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:06,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:06,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:06,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311994136] [2021-06-13 07:31:06,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311994136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:06,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:06,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:31:06,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661982867] [2021-06-13 07:31:06,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:31:06,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:06,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:31:06,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:31:06,492 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:06,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 100 transitions, 851 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2021-06-13 07:31:06,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:06,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:06,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:07,083 INFO L129 PetriNetUnfolder]: 2205/4203 cut-off events. [2021-06-13 07:31:07,083 INFO L130 PetriNetUnfolder]: For 4497/4853 co-relation queries the response was YES. [2021-06-13 07:31:07,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9072 conditions, 4203 events. 2205/4203 cut-off events. For 4497/4853 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 34931 event pairs, 84 based on Foata normal form. 5/3743 useless extension candidates. Maximal degree in co-relation 9035. Up to 1461 conditions per place. [2021-06-13 07:31:07,129 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 29 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2021-06-13 07:31:07,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 137 transitions, 1023 flow [2021-06-13 07:31:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:31:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:31:07,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 871 transitions. [2021-06-13 07:31:07,132 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8979381443298969 [2021-06-13 07:31:07,132 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 871 transitions. [2021-06-13 07:31:07,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 871 transitions. [2021-06-13 07:31:07,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:07,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 871 transitions. [2021-06-13 07:31:07,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.1) internal successors, (871), 10 states have internal predecessors, (871), 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) [2021-06-13 07:31:07,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2021-06-13 07:31:07,137 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2021-06-13 07:31:07,137 INFO L185 Difference]: Start difference. First operand has 144 places, 100 transitions, 851 flow. Second operand 10 states and 871 transitions. [2021-06-13 07:31:07,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 137 transitions, 1023 flow [2021-06-13 07:31:07,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 836 flow, removed 30 selfloop flow, removed 15 redundant places. [2021-06-13 07:31:07,152 INFO L241 Difference]: Finished difference. Result has 141 places, 118 transitions, 807 flow [2021-06-13 07:31:07,153 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=807, PETRI_PLACES=141, PETRI_TRANSITIONS=118} [2021-06-13 07:31:07,153 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 50 predicate places. [2021-06-13 07:31:07,153 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 118 transitions, 807 flow [2021-06-13 07:31:07,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2021-06-13 07:31:07,154 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:07,154 INFO L255 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] [2021-06-13 07:31:07,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:31:07,154 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:07,155 INFO L82 PathProgramCache]: Analyzing trace with hash 184980974, now seen corresponding path program 1 times [2021-06-13 07:31:07,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:07,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409893978] [2021-06-13 07:31:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:07,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:07,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:07,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:07,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:07,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:07,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:07,241 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:31:07,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:31:07,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:07,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:31:07,265 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:31:07,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:07,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:07,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:07,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:07,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409893978] [2021-06-13 07:31:07,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409893978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:07,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:07,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:07,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425935051] [2021-06-13 07:31:07,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:07,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:07,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:07,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:07,276 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:07,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 118 transitions, 807 flow. Second operand has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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) [2021-06-13 07:31:07,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:07,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:07,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:08,040 INFO L129 PetriNetUnfolder]: 2391/4638 cut-off events. [2021-06-13 07:31:08,041 INFO L130 PetriNetUnfolder]: For 15232/18101 co-relation queries the response was YES. [2021-06-13 07:31:08,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18376 conditions, 4638 events. 2391/4638 cut-off events. For 15232/18101 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 40722 event pairs, 22 based on Foata normal form. 377/4692 useless extension candidates. Maximal degree in co-relation 18342. Up to 2606 conditions per place. [2021-06-13 07:31:08,096 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 34 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2021-06-13 07:31:08,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 160 transitions, 1231 flow [2021-06-13 07:31:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1134 transitions. [2021-06-13 07:31:08,100 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8992862807295797 [2021-06-13 07:31:08,100 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1134 transitions. [2021-06-13 07:31:08,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1134 transitions. [2021-06-13 07:31:08,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:08,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1134 transitions. [2021-06-13 07:31:08,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.23076923076923) internal successors, (1134), 13 states have internal predecessors, (1134), 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) [2021-06-13 07:31:08,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:08,105 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:08,106 INFO L185 Difference]: Start difference. First operand has 141 places, 118 transitions, 807 flow. Second operand 13 states and 1134 transitions. [2021-06-13 07:31:08,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 160 transitions, 1231 flow [2021-06-13 07:31:08,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 160 transitions, 1229 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 07:31:08,201 INFO L241 Difference]: Finished difference. Result has 158 places, 138 transitions, 1098 flow [2021-06-13 07:31:08,201 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1098, PETRI_PLACES=158, PETRI_TRANSITIONS=138} [2021-06-13 07:31:08,202 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 67 predicate places. [2021-06-13 07:31:08,202 INFO L482 AbstractCegarLoop]: Abstraction has has 158 places, 138 transitions, 1098 flow [2021-06-13 07:31:08,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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) [2021-06-13 07:31:08,202 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:08,202 INFO L255 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] [2021-06-13 07:31:08,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 07:31:08,202 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:08,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1357075675, now seen corresponding path program 1 times [2021-06-13 07:31:08,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:08,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007491118] [2021-06-13 07:31:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:08,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:08,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:08,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:08,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:08,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:08,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:08,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:08,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:08,248 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:31:08,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:31:08,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:08,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:31:08,273 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:31:08,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:08,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:08,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:08,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:08,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007491118] [2021-06-13 07:31:08,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007491118] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:08,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:08,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:31:08,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778066148] [2021-06-13 07:31:08,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:31:08,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:08,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:31:08,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:31:08,289 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:08,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 138 transitions, 1098 flow. Second operand has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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) [2021-06-13 07:31:08,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:08,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:08,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:09,157 INFO L129 PetriNetUnfolder]: 2376/4663 cut-off events. [2021-06-13 07:31:09,157 INFO L130 PetriNetUnfolder]: For 45155/54337 co-relation queries the response was YES. [2021-06-13 07:31:09,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26389 conditions, 4663 events. 2376/4663 cut-off events. For 45155/54337 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 41785 event pairs, 3 based on Foata normal form. 552/4896 useless extension candidates. Maximal degree in co-relation 26349. Up to 2576 conditions per place. [2021-06-13 07:31:09,218 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 28 selfloop transitions, 58 changer transitions 12/186 dead transitions. [2021-06-13 07:31:09,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 186 transitions, 1800 flow [2021-06-13 07:31:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 07:31:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-13 07:31:09,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1397 transitions. [2021-06-13 07:31:09,224 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9001288659793815 [2021-06-13 07:31:09,224 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1397 transitions. [2021-06-13 07:31:09,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1397 transitions. [2021-06-13 07:31:09,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:09,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1397 transitions. [2021-06-13 07:31:09,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 87.3125) internal successors, (1397), 16 states have internal predecessors, (1397), 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) [2021-06-13 07:31:09,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2021-06-13 07:31:09,231 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2021-06-13 07:31:09,231 INFO L185 Difference]: Start difference. First operand has 158 places, 138 transitions, 1098 flow. Second operand 16 states and 1397 transitions. [2021-06-13 07:31:09,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 186 transitions, 1800 flow [2021-06-13 07:31:09,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 186 transitions, 1682 flow, removed 46 selfloop flow, removed 5 redundant places. [2021-06-13 07:31:09,411 INFO L241 Difference]: Finished difference. Result has 172 places, 164 transitions, 1449 flow [2021-06-13 07:31:09,411 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1449, PETRI_PLACES=172, PETRI_TRANSITIONS=164} [2021-06-13 07:31:09,411 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 81 predicate places. [2021-06-13 07:31:09,412 INFO L482 AbstractCegarLoop]: Abstraction has has 172 places, 164 transitions, 1449 flow [2021-06-13 07:31:09,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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) [2021-06-13 07:31:09,412 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:09,412 INFO L255 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] [2021-06-13 07:31:09,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 07:31:09,412 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:09,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:09,413 INFO L82 PathProgramCache]: Analyzing trace with hash 947276990, now seen corresponding path program 1 times [2021-06-13 07:31:09,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:09,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144772003] [2021-06-13 07:31:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:09,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:09,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:09,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:09,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:09,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:09,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:09,458 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:09,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:09,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:09,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:09,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:09,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:09,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:09,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:09,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:09,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144772003] [2021-06-13 07:31:09,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144772003] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:09,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:09,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:09,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138589671] [2021-06-13 07:31:09,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:09,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:09,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:09,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:09,495 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:09,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 164 transitions, 1449 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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) [2021-06-13 07:31:09,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:09,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:09,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:10,132 INFO L129 PetriNetUnfolder]: 1621/4448 cut-off events. [2021-06-13 07:31:10,132 INFO L130 PetriNetUnfolder]: For 33609/34784 co-relation queries the response was YES. [2021-06-13 07:31:10,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20359 conditions, 4448 events. 1621/4448 cut-off events. For 33609/34784 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 47883 event pairs, 3 based on Foata normal form. 19/4233 useless extension candidates. Maximal degree in co-relation 20316. Up to 1512 conditions per place. [2021-06-13 07:31:10,179 INFO L132 encePairwiseOnDemand]: 90/97 looper letters, 15 selfloop transitions, 12 changer transitions 7/174 dead transitions. [2021-06-13 07:31:10,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 174 transitions, 1556 flow [2021-06-13 07:31:10,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:31:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:31:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 679 transitions. [2021-06-13 07:31:10,181 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-06-13 07:31:10,181 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 679 transitions. [2021-06-13 07:31:10,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 679 transitions. [2021-06-13 07:31:10,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:10,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 679 transitions. [2021-06-13 07:31:10,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 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) [2021-06-13 07:31:10,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 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) [2021-06-13 07:31:10,185 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 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) [2021-06-13 07:31:10,185 INFO L185 Difference]: Start difference. First operand has 172 places, 164 transitions, 1449 flow. Second operand 8 states and 679 transitions. [2021-06-13 07:31:10,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 174 transitions, 1556 flow [2021-06-13 07:31:10,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 174 transitions, 1231 flow, removed 120 selfloop flow, removed 14 redundant places. [2021-06-13 07:31:10,783 INFO L241 Difference]: Finished difference. Result has 170 places, 163 transitions, 1169 flow [2021-06-13 07:31:10,784 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1169, PETRI_PLACES=170, PETRI_TRANSITIONS=163} [2021-06-13 07:31:10,784 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 79 predicate places. [2021-06-13 07:31:10,784 INFO L482 AbstractCegarLoop]: Abstraction has has 170 places, 163 transitions, 1169 flow [2021-06-13 07:31:10,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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) [2021-06-13 07:31:10,784 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:10,785 INFO L255 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] [2021-06-13 07:31:10,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 07:31:10,785 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:10,785 INFO L82 PathProgramCache]: Analyzing trace with hash -106402182, now seen corresponding path program 2 times [2021-06-13 07:31:10,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:10,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710176990] [2021-06-13 07:31:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:10,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:10,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:10,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:10,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:10,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:10,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:10,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:10,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:10,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:10,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:10,845 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:31:10,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:31:10,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:10,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:31:10,872 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:31:10,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:10,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:10,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:10,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:10,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710176990] [2021-06-13 07:31:10,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710176990] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:10,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:10,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 07:31:10,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750451888] [2021-06-13 07:31:10,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 07:31:10,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:10,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 07:31:10,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-13 07:31:10,884 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:10,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 163 transitions, 1169 flow. Second operand has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 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) [2021-06-13 07:31:10,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:10,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:10,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:11,720 INFO L129 PetriNetUnfolder]: 2351/5136 cut-off events. [2021-06-13 07:31:11,720 INFO L130 PetriNetUnfolder]: For 11381/15022 co-relation queries the response was YES. [2021-06-13 07:31:11,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18802 conditions, 5136 events. 2351/5136 cut-off events. For 11381/15022 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 51436 event pairs, 3 based on Foata normal form. 590/5338 useless extension candidates. Maximal degree in co-relation 18760. Up to 774 conditions per place. [2021-06-13 07:31:11,759 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 4 selfloop transitions, 19 changer transitions 108/198 dead transitions. [2021-06-13 07:31:11,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 198 transitions, 1626 flow [2021-06-13 07:31:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-13 07:31:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-06-13 07:31:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1638 transitions. [2021-06-13 07:31:11,762 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8887683125339121 [2021-06-13 07:31:11,762 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1638 transitions. [2021-06-13 07:31:11,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1638 transitions. [2021-06-13 07:31:11,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:11,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1638 transitions. [2021-06-13 07:31:11,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 86.21052631578948) internal successors, (1638), 19 states have internal predecessors, (1638), 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) [2021-06-13 07:31:11,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 97.0) internal successors, (1940), 20 states have internal predecessors, (1940), 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) [2021-06-13 07:31:11,768 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 97.0) internal successors, (1940), 20 states have internal predecessors, (1940), 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) [2021-06-13 07:31:11,769 INFO L185 Difference]: Start difference. First operand has 170 places, 163 transitions, 1169 flow. Second operand 19 states and 1638 transitions. [2021-06-13 07:31:11,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 198 transitions, 1626 flow [2021-06-13 07:31:11,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 198 transitions, 1575 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-06-13 07:31:11,960 INFO L241 Difference]: Finished difference. Result has 183 places, 90 transitions, 471 flow [2021-06-13 07:31:11,960 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=471, PETRI_PLACES=183, PETRI_TRANSITIONS=90} [2021-06-13 07:31:11,960 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 92 predicate places. [2021-06-13 07:31:11,960 INFO L482 AbstractCegarLoop]: Abstraction has has 183 places, 90 transitions, 471 flow [2021-06-13 07:31:11,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 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) [2021-06-13 07:31:11,961 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:11,961 INFO L255 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] [2021-06-13 07:31:11,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-13 07:31:11,961 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:11,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:11,961 INFO L82 PathProgramCache]: Analyzing trace with hash -831271085, now seen corresponding path program 1 times [2021-06-13 07:31:11,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:11,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587821000] [2021-06-13 07:31:11,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:11,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:11,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:11,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:11,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:12,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:12,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:12,008 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:12,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:12,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:12,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:12,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:12,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:12,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:12,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:12,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:12,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587821000] [2021-06-13 07:31:12,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587821000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:12,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:12,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:12,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826695062] [2021-06-13 07:31:12,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:12,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:12,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:12,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:12,048 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:12,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 90 transitions, 471 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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) [2021-06-13 07:31:12,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:12,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:12,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:12,128 INFO L129 PetriNetUnfolder]: 22/148 cut-off events. [2021-06-13 07:31:12,128 INFO L130 PetriNetUnfolder]: For 347/363 co-relation queries the response was YES. [2021-06-13 07:31:12,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 148 events. 22/148 cut-off events. For 347/363 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 392 event pairs, 1 based on Foata normal form. 1/145 useless extension candidates. Maximal degree in co-relation 383. Up to 19 conditions per place. [2021-06-13 07:31:12,129 INFO L132 encePairwiseOnDemand]: 89/97 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2021-06-13 07:31:12,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 88 transitions, 489 flow [2021-06-13 07:31:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:31:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:31:12,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 586 transitions. [2021-06-13 07:31:12,130 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8630338733431517 [2021-06-13 07:31:12,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 586 transitions. [2021-06-13 07:31:12,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 586 transitions. [2021-06-13 07:31:12,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:12,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 586 transitions. [2021-06-13 07:31:12,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 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) [2021-06-13 07:31:12,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 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) [2021-06-13 07:31:12,133 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 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) [2021-06-13 07:31:12,133 INFO L185 Difference]: Start difference. First operand has 183 places, 90 transitions, 471 flow. Second operand 7 states and 586 transitions. [2021-06-13 07:31:12,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 88 transitions, 489 flow [2021-06-13 07:31:12,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 88 transitions, 282 flow, removed 27 selfloop flow, removed 49 redundant places. [2021-06-13 07:31:12,137 INFO L241 Difference]: Finished difference. Result has 109 places, 0 transitions, 0 flow [2021-06-13 07:31:12,137 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=109, PETRI_TRANSITIONS=0} [2021-06-13 07:31:12,137 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 18 predicate places. [2021-06-13 07:31:12,137 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 0 transitions, 0 flow [2021-06-13 07:31:12,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 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) [2021-06-13 07:31:12,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-13 07:31:12,140 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:31:12,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:31:12 BasicIcfg [2021-06-13 07:31:12,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:31:12,145 INFO L168 Benchmark]: Toolchain (without parser) took 10753.11 ms. Allocated memory was 184.5 MB in the beginning and 807.4 MB in the end (delta: 622.9 MB). Free memory was 146.5 MB in the beginning and 621.1 MB in the end (delta: -474.6 MB). Peak memory consumption was 455.2 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:12,146 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 184.5 MB. Free memory is still 164.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:31:12,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.14 ms. Allocated memory is still 184.5 MB. Free memory was 146.3 MB in the beginning and 147.0 MB in the end (delta: -717.0 kB). Peak memory consumption was 9.7 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:12,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.37 ms. Allocated memory is still 184.5 MB. Free memory was 147.0 MB in the beginning and 144.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:12,146 INFO L168 Benchmark]: Boogie Preprocessor took 20.02 ms. Allocated memory is still 184.5 MB. Free memory was 144.9 MB in the beginning and 143.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:12,148 INFO L168 Benchmark]: RCFGBuilder took 382.69 ms. Allocated memory is still 184.5 MB. Free memory was 143.5 MB in the beginning and 160.2 MB in the end (delta: -16.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:12,148 INFO L168 Benchmark]: TraceAbstraction took 9809.34 ms. Allocated memory was 184.5 MB in the beginning and 807.4 MB in the end (delta: 622.9 MB). Free memory was 159.7 MB in the beginning and 621.1 MB in the end (delta: -461.4 MB). Peak memory consumption was 467.7 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:12,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 184.5 MB. Free memory is still 164.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 478.14 ms. Allocated memory is still 184.5 MB. Free memory was 146.3 MB in the beginning and 147.0 MB in the end (delta: -717.0 kB). Peak memory consumption was 9.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.37 ms. Allocated memory is still 184.5 MB. Free memory was 147.0 MB in the beginning and 144.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 20.02 ms. Allocated memory is still 184.5 MB. Free memory was 144.9 MB in the beginning and 143.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 382.69 ms. Allocated memory is still 184.5 MB. Free memory was 143.5 MB in the beginning and 160.2 MB in the end (delta: -16.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9809.34 ms. Allocated memory was 184.5 MB in the beginning and 807.4 MB in the end (delta: 622.9 MB). Free memory was 159.7 MB in the beginning and 621.1 MB in the end (delta: -461.4 MB). Peak memory consumption was 467.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 126 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 20.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 9718.1ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 7676.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 65.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 221 SDtfs, 541 SDslu, 784 SDs, 0 SdLazy, 772 SolverSat, 203 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 574.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1850.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1449occurred in iteration=10, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.1ms SsaConstructionTime, 279.7ms SatisfiabilityAnalysisTime, 1380.2ms InterpolantComputationTime, 812 NumberOfCodeBlocks, 812 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 799 ConstructedInterpolants, 0 QuantifiedInterpolants, 3419 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...