/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 01:39:20,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 01:39:20,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 01:39:20,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 01:39:20,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 01:39:20,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 01:39:20,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 01:39:20,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 01:39:20,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 01:39:20,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 01:39:20,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 01:39:20,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 01:39:20,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 01:39:20,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 01:39:20,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 01:39:20,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 01:39:20,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 01:39:20,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 01:39:20,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 01:39:21,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 01:39:21,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 01:39:21,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 01:39:21,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 01:39:21,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 01:39:21,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 01:39:21,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 01:39:21,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 01:39:21,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 01:39:21,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 01:39:21,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 01:39:21,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 01:39:21,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 01:39:21,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 01:39:21,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 01:39:21,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 01:39:21,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 01:39:21,016 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 [2021-03-11 01:39:21,046 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 01:39:21,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 01:39:21,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 01:39:21,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 01:39:21,049 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 01:39:21,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 01:39:21,049 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 01:39:21,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 01:39:21,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 01:39:21,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 01:39:21,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 01:39:21,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 01:39:21,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 01:39:21,051 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 01:39:21,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 01:39:21,051 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 01:39:21,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 01:39:21,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 01:39:21,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 01:39:21,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 01:39:21,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 01:39:21,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 01:39:21,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 01:39:21,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 01:39:21,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 01:39:21,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 01:39:21,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 01:39:21,052 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 01:39:21,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 01:39:21,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 01:39:21,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 01:39:21,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 01:39:21,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 01:39:21,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 01:39:21,295 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 01:39:21,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-03-11 01:39:21,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1f2c9d8/e45e7077a15545ef955bdcf1b519e332/FLAGfee8ba53d [2021-03-11 01:39:21,719 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 01:39:21,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-03-11 01:39:21,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1f2c9d8/e45e7077a15545ef955bdcf1b519e332/FLAGfee8ba53d [2021-03-11 01:39:22,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d1f2c9d8/e45e7077a15545ef955bdcf1b519e332 [2021-03-11 01:39:22,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 01:39:22,076 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 01:39:22,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 01:39:22,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 01:39:22,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 01:39:22,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d510a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22, skipping insertion in model container [2021-03-11 01:39:22,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 01:39:22,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 01:39:22,297 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30132,30145] [2021-03-11 01:39:22,300 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30481,30494] [2021-03-11 01:39:22,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 01:39:22,306 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 01:39:22,355 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30132,30145] [2021-03-11 01:39:22,357 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30481,30494] [2021-03-11 01:39:22,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 01:39:22,396 INFO L208 MainTranslator]: Completed translation [2021-03-11 01:39:22,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22 WrapperNode [2021-03-11 01:39:22,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 01:39:22,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 01:39:22,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 01:39:22,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 01:39:22,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 01:39:22,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 01:39:22,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 01:39:22,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 01:39:22,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (1/1) ... [2021-03-11 01:39:22,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 01:39:22,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 01:39:22,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 01:39:22,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 01:39:22,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (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 [2021-03-11 01:39:22,483 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-11 01:39:22,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-11 01:39:22,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 01:39:22,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 01:39:22,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 01:39:22,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 01:39:22,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 01:39:22,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 01:39:22,485 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 01:39:22,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 01:39:22,759 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-11 01:39:22,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 01:39:22 BoogieIcfgContainer [2021-03-11 01:39:22,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 01:39:22,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 01:39:22,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 01:39:22,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 01:39:22,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 01:39:22" (1/3) ... [2021-03-11 01:39:22,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297655fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 01:39:22, skipping insertion in model container [2021-03-11 01:39:22,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:39:22" (2/3) ... [2021-03-11 01:39:22,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297655fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 01:39:22, skipping insertion in model container [2021-03-11 01:39:22,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 01:39:22" (3/3) ... [2021-03-11 01:39:22,764 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-03-11 01:39:22,769 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 01:39:22,772 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 01:39:22,772 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 01:39:22,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:39:22,802 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 01:39:22,814 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 01:39:22,835 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 01:39:22,835 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 01:39:22,835 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 01:39:22,835 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 01:39:22,835 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 01:39:22,835 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 01:39:22,835 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 01:39:22,836 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 01:39:22,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 181 flow [2021-03-11 01:39:22,880 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-03-11 01:39:22,880 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 01:39:22,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 24/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2021-03-11 01:39:22,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 88 transitions, 181 flow [2021-03-11 01:39:22,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 87 transitions, 177 flow [2021-03-11 01:39:22,913 INFO L129 PetriNetUnfolder]: 16/65 cut-off events. [2021-03-11 01:39:22,913 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 01:39:22,913 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:39:22,914 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] [2021-03-11 01:39:22,914 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:39:22,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:39:22,918 INFO L82 PathProgramCache]: Analyzing trace with hash -441178988, now seen corresponding path program 1 times [2021-03-11 01:39:22,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:39:22,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865861817] [2021-03-11 01:39:22,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:39:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:39:23,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:39:23,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865861817] [2021-03-11 01:39:23,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:39:23,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 01:39:23,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892955021] [2021-03-11 01:39:23,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 01:39:23,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:39:23,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 01:39:23,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 01:39:23,069 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 88 [2021-03-11 01:39:23,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 87 transitions, 177 flow. Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 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) [2021-03-11 01:39:23,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:39:23,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 88 [2021-03-11 01:39:23,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:39:23,090 INFO L129 PetriNetUnfolder]: 12/61 cut-off events. [2021-03-11 01:39:23,090 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 01:39:23,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 61 events. 12/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 12/61 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-03-11 01:39:23,091 INFO L132 encePairwiseOnDemand]: 74/88 looper letters, 0 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2021-03-11 01:39:23,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 125 flow [2021-03-11 01:39:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 01:39:23,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 01:39:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 158 transitions. [2021-03-11 01:39:23,099 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8977272727272727 [2021-03-11 01:39:23,100 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 158 transitions. [2021-03-11 01:39:23,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 158 transitions. [2021-03-11 01:39:23,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:39:23,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 158 transitions. [2021-03-11 01:39:23,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 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) [2021-03-11 01:39:23,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2021-03-11 01:39:23,110 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2021-03-11 01:39:23,111 INFO L185 Difference]: Start difference. First operand has 67 places, 87 transitions, 177 flow. Second operand 2 states and 158 transitions. [2021-03-11 01:39:23,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 125 flow [2021-03-11 01:39:23,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 01:39:23,118 INFO L241 Difference]: Finished difference. Result has 53 places, 61 transitions, 124 flow [2021-03-11 01:39:23,119 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2021-03-11 01:39:23,119 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, -14 predicate places. [2021-03-11 01:39:23,120 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 124 flow [2021-03-11 01:39:23,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 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) [2021-03-11 01:39:23,120 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:39:23,120 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] [2021-03-11 01:39:23,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 01:39:23,120 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:39:23,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:39:23,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1301661138, now seen corresponding path program 1 times [2021-03-11 01:39:23,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:39:23,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095681892] [2021-03-11 01:39:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:39:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:39:23,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 01:39:23,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:39:23,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095681892] [2021-03-11 01:39:23,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:39:23,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 01:39:23,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384706283] [2021-03-11 01:39:23,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 01:39:23,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:39:23,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 01:39:23,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 01:39:23,180 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 88 [2021-03-11 01:39:23,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2021-03-11 01:39:23,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:39:23,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 88 [2021-03-11 01:39:23,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:39:23,208 INFO L129 PetriNetUnfolder]: 56/188 cut-off events. [2021-03-11 01:39:23,208 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 01:39:23,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 188 events. 56/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 505 event pairs, 2 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 227. Up to 24 conditions per place. [2021-03-11 01:39:23,209 INFO L132 encePairwiseOnDemand]: 83/88 looper letters, 8 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2021-03-11 01:39:23,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 65 transitions, 154 flow [2021-03-11 01:39:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 01:39:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 01:39:23,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2021-03-11 01:39:23,211 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2021-03-11 01:39:23,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2021-03-11 01:39:23,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2021-03-11 01:39:23,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:39:23,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2021-03-11 01:39:23,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2021-03-11 01:39:23,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 01:39:23,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 01:39:23,213 INFO L185 Difference]: Start difference. First operand has 53 places, 61 transitions, 124 flow. Second operand 3 states and 208 transitions. [2021-03-11 01:39:23,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 65 transitions, 154 flow [2021-03-11 01:39:23,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 01:39:23,215 INFO L241 Difference]: Finished difference. Result has 57 places, 63 transitions, 148 flow [2021-03-11 01:39:23,215 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=63} [2021-03-11 01:39:23,216 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2021-03-11 01:39:23,216 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 148 flow [2021-03-11 01:39:23,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2021-03-11 01:39:23,216 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:39:23,216 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] [2021-03-11 01:39:23,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 01:39:23,216 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:39:23,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:39:23,217 INFO L82 PathProgramCache]: Analyzing trace with hash -714082165, now seen corresponding path program 1 times [2021-03-11 01:39:23,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:39:23,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690704970] [2021-03-11 01:39:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:39:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:39:23,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 01:39:23,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:39:23,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690704970] [2021-03-11 01:39:23,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:39:23,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 01:39:23,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819721484] [2021-03-11 01:39:23,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 01:39:23,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:39:23,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 01:39:23,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 01:39:23,246 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 88 [2021-03-11 01:39:23,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2021-03-11 01:39:23,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:39:23,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 88 [2021-03-11 01:39:23,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:39:23,267 INFO L129 PetriNetUnfolder]: 46/161 cut-off events. [2021-03-11 01:39:23,267 INFO L130 PetriNetUnfolder]: For 27/34 co-relation queries the response was YES. [2021-03-11 01:39:23,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 161 events. 46/161 cut-off events. For 27/34 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 385 event pairs, 2 based on Foata normal form. 8/131 useless extension candidates. Maximal degree in co-relation 221. Up to 16 conditions per place. [2021-03-11 01:39:23,268 INFO L132 encePairwiseOnDemand]: 84/88 looper letters, 7 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2021-03-11 01:39:23,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 166 flow [2021-03-11 01:39:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 01:39:23,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 01:39:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2021-03-11 01:39:23,272 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7803030303030303 [2021-03-11 01:39:23,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 206 transitions. [2021-03-11 01:39:23,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 206 transitions. [2021-03-11 01:39:23,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:39:23,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 206 transitions. [2021-03-11 01:39:23,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2021-03-11 01:39:23,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 01:39:23,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 01:39:23,274 INFO L185 Difference]: Start difference. First operand has 57 places, 63 transitions, 148 flow. Second operand 3 states and 206 transitions. [2021-03-11 01:39:23,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 166 flow [2021-03-11 01:39:23,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 01:39:23,275 INFO L241 Difference]: Finished difference. Result has 58 places, 63 transitions, 152 flow [2021-03-11 01:39:23,276 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2021-03-11 01:39:23,276 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2021-03-11 01:39:23,276 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 152 flow [2021-03-11 01:39:23,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2021-03-11 01:39:23,276 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:39:23,276 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] [2021-03-11 01:39:23,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 01:39:23,276 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:39:23,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:39:23,277 INFO L82 PathProgramCache]: Analyzing trace with hash -842194008, now seen corresponding path program 1 times [2021-03-11 01:39:23,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:39:23,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375440318] [2021-03-11 01:39:23,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:39:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:39:23,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 01:39:23,343 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-11 01:39:23,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:39:23,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375440318] [2021-03-11 01:39:23,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:39:23,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 01:39:23,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375186693] [2021-03-11 01:39:23,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 01:39:23,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:39:23,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 01:39:23,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 01:39:23,347 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 88 [2021-03-11 01:39:23,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-03-11 01:39:23,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:39:23,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 88 [2021-03-11 01:39:23,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:39:23,429 INFO L129 PetriNetUnfolder]: 266/557 cut-off events. [2021-03-11 01:39:23,429 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2021-03-11 01:39:23,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 557 events. 266/557 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2242 event pairs, 52 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 928. Up to 225 conditions per place. [2021-03-11 01:39:23,435 INFO L132 encePairwiseOnDemand]: 77/88 looper letters, 19 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2021-03-11 01:39:23,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 220 flow [2021-03-11 01:39:23,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 01:39:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 01:39:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2021-03-11 01:39:23,440 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-11 01:39:23,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2021-03-11 01:39:23,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2021-03-11 01:39:23,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:39:23,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2021-03-11 01:39:23,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2021-03-11 01:39:23,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 01:39:23,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 01:39:23,450 INFO L185 Difference]: Start difference. First operand has 58 places, 63 transitions, 152 flow. Second operand 3 states and 198 transitions. [2021-03-11 01:39:23,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 220 flow [2021-03-11 01:39:23,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 01:39:23,452 INFO L241 Difference]: Finished difference. Result has 61 places, 68 transitions, 204 flow [2021-03-11 01:39:23,452 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=61, PETRI_TRANSITIONS=68} [2021-03-11 01:39:23,452 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, -6 predicate places. [2021-03-11 01:39:23,452 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 68 transitions, 204 flow [2021-03-11 01:39:23,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-03-11 01:39:23,452 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:39:23,452 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] [2021-03-11 01:39:23,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 01:39:23,453 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:39:23,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:39:23,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1914557310, now seen corresponding path program 2 times [2021-03-11 01:39:23,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:39:23,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632094773] [2021-03-11 01:39:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:39:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:39:23,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 01:39:23,482 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-11 01:39:23,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:39:23,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:39:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:39:23,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632094773] [2021-03-11 01:39:23,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:39:23,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 01:39:23,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143434981] [2021-03-11 01:39:23,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 01:39:23,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:39:23,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 01:39:23,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 01:39:23,486 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 88 [2021-03-11 01:39:23,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-03-11 01:39:23,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:39:23,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 88 [2021-03-11 01:39:23,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:39:23,556 INFO L129 PetriNetUnfolder]: 329/644 cut-off events. [2021-03-11 01:39:23,556 INFO L130 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2021-03-11 01:39:23,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1269 conditions, 644 events. 329/644 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2584 event pairs, 62 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 1262. Up to 218 conditions per place. [2021-03-11 01:39:23,558 INFO L132 encePairwiseOnDemand]: 77/88 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2021-03-11 01:39:23,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 73 transitions, 260 flow [2021-03-11 01:39:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 01:39:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 01:39:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2021-03-11 01:39:23,560 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-11 01:39:23,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2021-03-11 01:39:23,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2021-03-11 01:39:23,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:39:23,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2021-03-11 01:39:23,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2021-03-11 01:39:23,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 01:39:23,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 01:39:23,562 INFO L185 Difference]: Start difference. First operand has 61 places, 68 transitions, 204 flow. Second operand 3 states and 198 transitions. [2021-03-11 01:39:23,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 73 transitions, 260 flow [2021-03-11 01:39:23,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 244 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-11 01:39:23,570 INFO L241 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2021-03-11 01:39:23,570 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2021-03-11 01:39:23,571 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2021-03-11 01:39:23,571 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2021-03-11 01:39:23,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-03-11 01:39:23,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 01:39:23,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 01:39:23 BasicIcfg [2021-03-11 01:39:23,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 01:39:23,576 INFO L168 Benchmark]: Toolchain (without parser) took 1502.43 ms. Allocated memory is still 364.9 MB. Free memory was 328.4 MB in the beginning and 190.3 MB in the end (delta: 138.1 MB). Peak memory consumption was 138.3 MB. Max. memory is 16.0 GB. [2021-03-11 01:39:23,576 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 364.9 MB. Free memory was 346.1 MB in the beginning and 346.0 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 01:39:23,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.44 ms. Allocated memory is still 364.9 MB. Free memory was 327.8 MB in the beginning and 330.8 MB in the end (delta: -3.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. [2021-03-11 01:39:23,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.34 ms. Allocated memory is still 364.9 MB. Free memory was 330.8 MB in the beginning and 328.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 01:39:23,580 INFO L168 Benchmark]: Boogie Preprocessor took 13.98 ms. Allocated memory is still 364.9 MB. Free memory was 328.7 MB in the beginning and 327.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 01:39:23,580 INFO L168 Benchmark]: RCFGBuilder took 326.30 ms. Allocated memory is still 364.9 MB. Free memory was 326.6 MB in the beginning and 304.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 01:39:23,580 INFO L168 Benchmark]: TraceAbstraction took 814.07 ms. Allocated memory is still 364.9 MB. Free memory was 303.5 MB in the beginning and 190.3 MB in the end (delta: 113.2 MB). Peak memory consumption was 113.2 MB. Max. memory is 16.0 GB. [2021-03-11 01:39:23,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 364.9 MB. Free memory was 346.1 MB in the beginning and 346.0 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 318.44 ms. Allocated memory is still 364.9 MB. Free memory was 327.8 MB in the beginning and 330.8 MB in the end (delta: -3.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.34 ms. Allocated memory is still 364.9 MB. Free memory was 330.8 MB in the beginning and 328.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.98 ms. Allocated memory is still 364.9 MB. Free memory was 328.7 MB in the beginning and 327.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 326.30 ms. Allocated memory is still 364.9 MB. Free memory was 326.6 MB in the beginning and 304.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 814.07 ms. Allocated memory is still 364.9 MB. Free memory was 303.5 MB in the beginning and 190.3 MB in the end (delta: 113.2 MB). Peak memory consumption was 113.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 716]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 15.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 739.9ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 314.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 61.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 58 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=4, InterpolantAutomatonStates: 14, 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: 11.2ms SsaConstructionTime, 67.6ms SatisfiabilityAnalysisTime, 158.0ms InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 189 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...