/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-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:03:04,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:03:04,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:03:04,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 14:03:04,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 14:03:04,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 14:03:04,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 14:03:04,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 14:03:04,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 14:03:04,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 14:03:04,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 14:03:04,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 14:03:04,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:03:04,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:03:04,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:03:04,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:03:04,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:03:04,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:03:04,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:03:04,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:03:04,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:03:04,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:03:04,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:03:04,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:03:04,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 14:03:04,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 14:03:04,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 14:03:04,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 14:03:04,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 14:03:04,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 14:03:04,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 14:03:04,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 14:03:04,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 14:03:04,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 14:03:04,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 14:03:04,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 14:03:04,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 14:03:04,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 14:03:04,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:03:04,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:03:04,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:03:04,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 14:03:04,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:03:04,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:03:04,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:03:04,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:03:04,897 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:03:04,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:03:04,897 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:03:04,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:03:04,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:03:04,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:03:04,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:03:04,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:03:04,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:03:04,898 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:03:04,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:03:04,898 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:03:04,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:03:04,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:03:04,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:03:04,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:03:04,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:03:04,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:03:04,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:03:04,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:03:04,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:03:04,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:03:04,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:03:04,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:03:04,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:03:05,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:03:05,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:03:05,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:03:05,143 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 14:03:05,144 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 14:03:05,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-03-11 14:03:05,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07b68264c/9996f6db8dd74f169d228ed5a73ebf0e/FLAG5ec93e87f [2021-03-11 14:03:05,578 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 14:03:05,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-03-11 14:03:05,579 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 14:03:05,579 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 14:03:05,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07b68264c/9996f6db8dd74f169d228ed5a73ebf0e/FLAG5ec93e87f [2021-03-11 14:03:05,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07b68264c/9996f6db8dd74f169d228ed5a73ebf0e [2021-03-11 14:03:05,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:03:05,620 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 14:03:05,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 14:03:05,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 14:03:05,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 14:03:05,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d8f8632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05, skipping insertion in model container [2021-03-11 14:03:05,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 14:03:05,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 14:03:05,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:03:05,766 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 14:03:05,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:03:05,785 INFO L208 MainTranslator]: Completed translation [2021-03-11 14:03:05,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05 WrapperNode [2021-03-11 14:03:05,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 14:03:05,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:03:05,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:03:05,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:03:05,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:03:05,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:03:05,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:03:05,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:03:05,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (1/1) ... [2021-03-11 14:03:05,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:03:05,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:03:05,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:03:05,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:03:05,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (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 14:03:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-03-11 14:03:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 14:03:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-03-11 14:03:05,910 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-03-11 14:03:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:03:05,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:03:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 14:03:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 14:03:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-11 14:03:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 14:03:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 14:03:05,912 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 14:03:06,128 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:03:06,129 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 14:03:06,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:03:06 BoogieIcfgContainer [2021-03-11 14:03:06,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:03:06,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:03:06,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:03:06,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:03:06,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:03:05" (1/3) ... [2021-03-11 14:03:06,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37598375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:03:06, skipping insertion in model container [2021-03-11 14:03:06,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:03:05" (2/3) ... [2021-03-11 14:03:06,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37598375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:03:06, skipping insertion in model container [2021-03-11 14:03:06,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:03:06" (3/3) ... [2021-03-11 14:03:06,134 INFO L111 eAbstractionObserver]: Analyzing ICFG simpleReturn.c [2021-03-11 14:03:06,138 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:03:06,138 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:03:06,151 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:03:06,151 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:03:06,172 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,173 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,173 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,173 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,173 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,174 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,174 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,174 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,174 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,174 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,175 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,175 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,175 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,175 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,175 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,175 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,176 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,176 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,176 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,176 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,176 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,176 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,177 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,177 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,178 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,179 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,179 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,179 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,180 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,180 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,180 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,180 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,180 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,181 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,181 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,181 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,181 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,182 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,183 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,184 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,184 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,184 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,184 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,184 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,184 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:03:06,192 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-11 14:03:06,204 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 14:03:06,225 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:03:06,226 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:03:06,226 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:03:06,226 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:03:06,226 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:03:06,226 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:03:06,226 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:03:06,226 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:03:06,236 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:03:06,243 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 42 transitions, 92 flow [2021-03-11 14:03:06,245 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 42 transitions, 92 flow [2021-03-11 14:03:06,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 92 flow [2021-03-11 14:03:06,278 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-03-11 14:03:06,278 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 14:03:06,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 0/41 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 14:03:06,280 INFO L116 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-11 14:03:07,635 INFO L131 LiptonReduction]: Checked pairs total: 50 [2021-03-11 14:03:07,636 INFO L133 LiptonReduction]: Total number of compositions: 37 [2021-03-11 14:03:07,640 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 8 transitions, 24 flow [2021-03-11 14:03:07,644 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 14:03:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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 14:03:07,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-03-11 14:03:07,648 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:03:07,649 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 14:03:07,649 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:03:07,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:03:07,652 INFO L82 PathProgramCache]: Analyzing trace with hash 317009256, now seen corresponding path program 1 times [2021-03-11 14:03:07,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:03:07,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598279359] [2021-03-11 14:03:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:03:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:03:07,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:07,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 14:03:07,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:07,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:03:07,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:07,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 14:03:07,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:07,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 14:03:07,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:07,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 14:03:07,813 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 14:03:07,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598279359] [2021-03-11 14:03:07,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:03:07,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 14:03:07,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665780600] [2021-03-11 14:03:07,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:03:07,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:03:07,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:03:07,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:03:07,826 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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 14:03:07,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:03:07,895 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-03-11 14:03:07,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:03:07,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) Word has length 6 [2021-03-11 14:03:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:03:07,903 INFO L225 Difference]: With dead ends: 11 [2021-03-11 14:03:07,903 INFO L226 Difference]: Without dead ends: 7 [2021-03-11 14:03:07,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:03:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-03-11 14:03:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-03-11 14:03:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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 14:03:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-03-11 14:03:07,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-03-11 14:03:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:03:07,925 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-03-11 14:03:07,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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 14:03:07,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-03-11 14:03:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-03-11 14:03:07,926 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:03:07,926 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 14:03:07,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:03:07,926 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:03:07,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:03:07,927 INFO L82 PathProgramCache]: Analyzing trace with hash 317182236, now seen corresponding path program 2 times [2021-03-11 14:03:07,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:03:07,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416785782] [2021-03-11 14:03:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:03:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:03:08,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:08,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 14:03:08,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:08,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:03:08,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:08,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:03:08,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:08,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 14:03:08,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:03:08,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 14:03:08,033 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 14:03:08,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416785782] [2021-03-11 14:03:08,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:03:08,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 14:03:08,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381351200] [2021-03-11 14:03:08,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 14:03:08,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:03:08,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 14:03:08,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 14:03:08,036 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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 14:03:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:03:08,076 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2021-03-11 14:03:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 14:03:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) Word has length 6 [2021-03-11 14:03:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:03:08,077 INFO L225 Difference]: With dead ends: 6 [2021-03-11 14:03:08,077 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 14:03:08,079 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:03:08,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 14:03:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 14:03:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 14:03:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 14:03:08,079 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-03-11 14:03:08,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:03:08,080 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 14:03:08,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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 14:03:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 14:03:08,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 14:03:08,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 14:03:08,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:03:08 BasicIcfg [2021-03-11 14:03:08,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:03:08,083 INFO L168 Benchmark]: Toolchain (without parser) took 2465.15 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 235.1 MB in the beginning and 264.2 MB in the end (delta: -29.2 MB). Peak memory consumption was 74.0 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:08,084 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:03:08,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.51 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.2 MB in the beginning and 344.2 MB in the end (delta: -109.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:08,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.74 ms. Allocated memory is still 360.7 MB. Free memory was 344.2 MB in the beginning and 343.2 MB in the end (delta: 997.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:03:08,089 INFO L168 Benchmark]: Boogie Preprocessor took 28.85 ms. Allocated memory is still 360.7 MB. Free memory was 342.7 MB in the beginning and 342.1 MB in the end (delta: 612.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:08,090 INFO L168 Benchmark]: RCFGBuilder took 289.11 ms. Allocated memory is still 360.7 MB. Free memory was 342.1 MB in the beginning and 325.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:08,090 INFO L168 Benchmark]: TraceAbstraction took 1951.82 ms. Allocated memory is still 360.7 MB. Free memory was 325.3 MB in the beginning and 264.2 MB in the end (delta: 61.1 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.0 GB. [2021-03-11 14:03:08,096 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 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 164.51 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.2 MB in the beginning and 344.2 MB in the end (delta: -109.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.74 ms. Allocated memory is still 360.7 MB. Free memory was 344.2 MB in the beginning and 343.2 MB in the end (delta: 997.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.85 ms. Allocated memory is still 360.7 MB. Free memory was 342.7 MB in the beginning and 342.1 MB in the end (delta: 612.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 289.11 ms. Allocated memory is still 360.7 MB. Free memory was 342.1 MB in the beginning and 325.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1951.82 ms. Allocated memory is still 360.7 MB. Free memory was 325.3 MB in the beginning and 264.2 MB in the end (delta: 61.1 MB). Peak memory consumption was 61.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1390.4ms, 46 PlacesBefore, 12 PlacesAfterwards, 42 TransitionsBefore, 8 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 37 TotalNumberOfCompositions, 50 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 37, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 37, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 46, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 37, unknown conditional: 0, unknown unconditional: 37] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1856.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 3.8ms, AutomataDifference: 129.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1418.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 62 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, 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: 13.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.7ms SsaConstructionTime, 56.6ms SatisfiabilityAnalysisTime, 156.3ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...