/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 21:53:52,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 21:53:52,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 21:53:52,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 21:53:52,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 21:53:52,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 21:53:52,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 21:53:52,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 21:53:52,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 21:53:52,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 21:53:52,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 21:53:52,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 21:53:52,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 21:53:52,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 21:53:52,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 21:53:52,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 21:53:52,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 21:53:52,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 21:53:52,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 21:53:52,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 21:53:52,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 21:53:52,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 21:53:52,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 21:53:52,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 21:53:52,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 21:53:52,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 21:53:52,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 21:53:52,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 21:53:52,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 21:53:52,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 21:53:52,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 21:53:52,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 21:53:52,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 21:53:52,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 21:53:52,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 21:53:52,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 21:53:52,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 21:53:52,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 21:53:52,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 21:53:52,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 21:53:52,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 21:53:52,637 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-NoLbe-Delay.epf [2021-07-09 21:53:52,664 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 21:53:52,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 21:53:52,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 21:53:52,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 21:53:52,667 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 21:53:52,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 21:53:52,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 21:53:52,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 21:53:52,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 21:53:52,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 21:53:52,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 21:53:52,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 21:53:52,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 21:53:52,669 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 21:53:52,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 21:53:52,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 21:53:52,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 21:53:52,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 21:53:52,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 21:53:52,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 21:53:52,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 21:53:52,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 21:53:52,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 21:53:52,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 21:53:52,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 21:53:52,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 21:53:52,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 21:53:52,671 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 21:53:52,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 21:53:52,671 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 21:53:52,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 21:53:52,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 21:53:52,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 21:53:52,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 21:53:52,980 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 21:53:52,981 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 21:53:52,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-07-09 21:53:53,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4624090/1008abf6a2c34a0b80f461d718770b4d/FLAG325d12c80 [2021-07-09 21:53:53,436 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 21:53:53,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-07-09 21:53:53,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4624090/1008abf6a2c34a0b80f461d718770b4d/FLAG325d12c80 [2021-07-09 21:53:53,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4624090/1008abf6a2c34a0b80f461d718770b4d [2021-07-09 21:53:53,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 21:53:53,791 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 21:53:53,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 21:53:53,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 21:53:53,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 21:53:53,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 09:53:53" (1/1) ... [2021-07-09 21:53:53,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f54b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:53, skipping insertion in model container [2021-07-09 21:53:53,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 09:53:53" (1/1) ... [2021-07-09 21:53:53,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 21:53:53,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 21:53:54,112 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30132,30145] [2021-07-09 21:53:54,138 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30481,30494] [2021-07-09 21:53:54,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 21:53:54,154 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 21:53:54,197 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30132,30145] [2021-07-09 21:53:54,199 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i[30481,30494] [2021-07-09 21:53:54,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 21:53:54,229 INFO L208 MainTranslator]: Completed translation [2021-07-09 21:53:54,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54 WrapperNode [2021-07-09 21:53:54,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 21:53:54,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 21:53:54,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 21:53:54,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 21:53:54,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (1/1) ... [2021-07-09 21:53:54,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (1/1) ... [2021-07-09 21:53:54,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 21:53:54,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 21:53:54,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 21:53:54,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 21:53:54,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (1/1) ... [2021-07-09 21:53:54,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (1/1) ... [2021-07-09 21:53:54,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (1/1) ... [2021-07-09 21:53:54,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (1/1) ... [2021-07-09 21:53:54,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (1/1) ... [2021-07-09 21:53:54,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (1/1) ... [2021-07-09 21:53:54,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (1/1) ... [2021-07-09 21:53:54,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 21:53:54,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 21:53:54,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 21:53:54,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 21:53:54,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (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 [2021-07-09 21:53:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-07-09 21:53:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-07-09 21:53:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 21:53:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 21:53:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 21:53:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 21:53:54,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 21:53:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 21:53:54,361 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 21:53:54,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 21:53:54,639 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-07-09 21:53:54,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 09:53:54 BoogieIcfgContainer [2021-07-09 21:53:54,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 21:53:54,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 21:53:54,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 21:53:54,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 21:53:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 09:53:53" (1/3) ... [2021-07-09 21:53:54,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84b7fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 09:53:54, skipping insertion in model container [2021-07-09 21:53:54,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:53:54" (2/3) ... [2021-07-09 21:53:54,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84b7fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 09:53:54, skipping insertion in model container [2021-07-09 21:53:54,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 09:53:54" (3/3) ... [2021-07-09 21:53:54,646 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-07-09 21:53:54,651 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 21:53:54,651 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 21:53:54,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-09 21:53:54,652 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 21:53:54,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,676 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,676 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:53:54,680 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 21:53:54,699 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-09 21:53:54,715 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 21:53:54,715 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 21:53:54,715 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 21:53:54,715 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 21:53:54,715 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 21:53:54,715 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 21:53:54,716 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 21:53:54,716 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork0======== [2021-07-09 21:53:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 544 states, 510 states have (on average 2.0980392156862746) internal successors, (1070), 543 states have internal predecessors, (1070), 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) [2021-07-09 21:53:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-07-09 21:53:54,961 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:54,961 INFO L508 BasicCegarLoop]: 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] [2021-07-09 21:53:54,962 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:54,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:54,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1300194564, now seen corresponding path program 1 times [2021-07-09 21:53:54,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:54,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434119255] [2021-07-09 21:53:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:55,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:55,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:55,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434119255] [2021-07-09 21:53:55,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434119255] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:55,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:55,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 21:53:55,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952068137] [2021-07-09 21:53:55,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-09 21:53:55,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:55,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-09 21:53:55,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-09 21:53:55,171 INFO L87 Difference]: Start difference. First operand has 544 states, 510 states have (on average 2.0980392156862746) internal successors, (1070), 543 states have internal predecessors, (1070), 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 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-07-09 21:53:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:55,189 INFO L93 Difference]: Finished difference Result 353 states and 694 transitions. [2021-07-09 21:53:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:53:55,191 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-07-09 21:53:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:55,201 INFO L225 Difference]: With dead ends: 353 [2021-07-09 21:53:55,201 INFO L226 Difference]: Without dead ends: 305 [2021-07-09 21:53:55,202 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-09 21:53:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-07-09 21:53:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2021-07-09 21:53:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 2.1052631578947367) internal successors, (640), 304 states have internal predecessors, (640), 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) [2021-07-09 21:53:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 640 transitions. [2021-07-09 21:53:55,245 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 640 transitions. Word has length 28 [2021-07-09 21:53:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:55,246 INFO L482 AbstractCegarLoop]: Abstraction has 305 states and 640 transitions. [2021-07-09 21:53:55,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-07-09 21:53:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 640 transitions. [2021-07-09 21:53:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-07-09 21:53:55,247 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:55,247 INFO L508 BasicCegarLoop]: 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] [2021-07-09 21:53:55,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 21:53:55,248 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:55,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1251932606, now seen corresponding path program 1 times [2021-07-09 21:53:55,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:55,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111654711] [2021-07-09 21:53:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:55,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:55,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:55,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:55,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111654711] [2021-07-09 21:53:55,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111654711] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:55,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:55,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:53:55,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70219909] [2021-07-09 21:53:55,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:53:55,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:55,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:53:55,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,304 INFO L87 Difference]: Start difference. First operand 305 states and 640 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-07-09 21:53:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:55,324 INFO L93 Difference]: Finished difference Result 462 states and 1063 transitions. [2021-07-09 21:53:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:53:55,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-07-09 21:53:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:55,328 INFO L225 Difference]: With dead ends: 462 [2021-07-09 21:53:55,328 INFO L226 Difference]: Without dead ends: 449 [2021-07-09 21:53:55,329 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-07-09 21:53:55,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 305. [2021-07-09 21:53:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 2.148026315789474) internal successors, (653), 304 states have internal predecessors, (653), 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) [2021-07-09 21:53:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 653 transitions. [2021-07-09 21:53:55,343 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 653 transitions. Word has length 28 [2021-07-09 21:53:55,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:55,344 INFO L482 AbstractCegarLoop]: Abstraction has 305 states and 653 transitions. [2021-07-09 21:53:55,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-07-09 21:53:55,344 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 653 transitions. [2021-07-09 21:53:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-07-09 21:53:55,346 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:55,346 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:53:55,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 21:53:55,347 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:55,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1276466855, now seen corresponding path program 1 times [2021-07-09 21:53:55,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:55,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297336718] [2021-07-09 21:53:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:55,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:55,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:55,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:55,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297336718] [2021-07-09 21:53:55,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297336718] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:55,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:55,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:53:55,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39442996] [2021-07-09 21:53:55,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:53:55,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:55,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:53:55,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,409 INFO L87 Difference]: Start difference. First operand 305 states and 653 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:55,453 INFO L93 Difference]: Finished difference Result 327 states and 692 transitions. [2021-07-09 21:53:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:53:55,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-07-09 21:53:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:55,455 INFO L225 Difference]: With dead ends: 327 [2021-07-09 21:53:55,456 INFO L226 Difference]: Without dead ends: 327 [2021-07-09 21:53:55,456 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-07-09 21:53:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-07-09 21:53:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 2.1226993865030677) internal successors, (692), 326 states have internal predecessors, (692), 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) [2021-07-09 21:53:55,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 692 transitions. [2021-07-09 21:53:55,469 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 692 transitions. Word has length 42 [2021-07-09 21:53:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:55,470 INFO L482 AbstractCegarLoop]: Abstraction has 327 states and 692 transitions. [2021-07-09 21:53:55,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:55,470 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 692 transitions. [2021-07-09 21:53:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-07-09 21:53:55,476 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:55,476 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:53:55,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 21:53:55,476 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:55,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:55,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1007476549, now seen corresponding path program 2 times [2021-07-09 21:53:55,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:55,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968488594] [2021-07-09 21:53:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:55,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:55,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:55,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:55,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968488594] [2021-07-09 21:53:55,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968488594] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:55,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:55,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:53:55,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074750272] [2021-07-09 21:53:55,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:53:55,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:55,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:53:55,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,534 INFO L87 Difference]: Start difference. First operand 327 states and 692 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:55,563 INFO L93 Difference]: Finished difference Result 320 states and 641 transitions. [2021-07-09 21:53:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:53:55,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-07-09 21:53:55,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:55,566 INFO L225 Difference]: With dead ends: 320 [2021-07-09 21:53:55,566 INFO L226 Difference]: Without dead ends: 320 [2021-07-09 21:53:55,566 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-07-09 21:53:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2021-07-09 21:53:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 2.006309148264984) internal successors, (636), 317 states have internal predecessors, (636), 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) [2021-07-09 21:53:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 636 transitions. [2021-07-09 21:53:55,573 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 636 transitions. Word has length 42 [2021-07-09 21:53:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:55,573 INFO L482 AbstractCegarLoop]: Abstraction has 318 states and 636 transitions. [2021-07-09 21:53:55,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 636 transitions. [2021-07-09 21:53:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-07-09 21:53:55,574 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:55,574 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:53:55,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 21:53:55,574 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:55,575 INFO L82 PathProgramCache]: Analyzing trace with hash -282369101, now seen corresponding path program 3 times [2021-07-09 21:53:55,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:55,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777953452] [2021-07-09 21:53:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:55,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 21:53:55,632 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-09 21:53:55,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:55,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:55,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777953452] [2021-07-09 21:53:55,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777953452] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:55,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:55,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:53:55,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988108718] [2021-07-09 21:53:55,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:53:55,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:55,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:53:55,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,641 INFO L87 Difference]: Start difference. First operand 318 states and 636 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:55,678 INFO L93 Difference]: Finished difference Result 305 states and 579 transitions. [2021-07-09 21:53:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:53:55,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-07-09 21:53:55,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:55,679 INFO L225 Difference]: With dead ends: 305 [2021-07-09 21:53:55,679 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 21:53:55,679 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 21:53:55,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 21:53:55,680 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) [2021-07-09 21:53:55,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 21:53:55,680 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2021-07-09 21:53:55,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:55,680 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 21:53:55,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:55,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 21:53:55,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 21:53:55,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 21:53:55,681 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/2) [2021-07-09 21:53:55,682 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-09 21:53:55,683 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 21:53:55,683 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 21:53:55,683 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 21:53:55,683 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 21:53:55,683 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 21:53:55,683 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 21:53:55,684 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 21:53:55,684 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 21:53:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 457 states, 413 states have (on average 2.5254237288135593) internal successors, (1043), 456 states have internal predecessors, (1043), 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) [2021-07-09 21:53:55,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-07-09 21:53:55,785 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:55,785 INFO L508 BasicCegarLoop]: 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] [2021-07-09 21:53:55,785 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:55,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:55,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1049865858, now seen corresponding path program 1 times [2021-07-09 21:53:55,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:55,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581404530] [2021-07-09 21:53:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:55,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:55,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:55,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581404530] [2021-07-09 21:53:55,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581404530] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:55,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:55,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 21:53:55,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253496682] [2021-07-09 21:53:55,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-09 21:53:55,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:55,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-09 21:53:55,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-09 21:53:55,804 INFO L87 Difference]: Start difference. First operand has 457 states, 413 states have (on average 2.5254237288135593) internal successors, (1043), 456 states have internal predecessors, (1043), 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 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-07-09 21:53:55,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:55,807 INFO L93 Difference]: Finished difference Result 353 states and 724 transitions. [2021-07-09 21:53:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:53:55,807 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2021-07-09 21:53:55,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:55,808 INFO L225 Difference]: With dead ends: 353 [2021-07-09 21:53:55,808 INFO L226 Difference]: Without dead ends: 235 [2021-07-09 21:53:55,809 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-09 21:53:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-07-09 21:53:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2021-07-09 21:53:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.4358974358974357) internal successors, (570), 234 states have internal predecessors, (570), 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) [2021-07-09 21:53:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 570 transitions. [2021-07-09 21:53:55,814 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 570 transitions. Word has length 33 [2021-07-09 21:53:55,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:55,815 INFO L482 AbstractCegarLoop]: Abstraction has 235 states and 570 transitions. [2021-07-09 21:53:55,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-07-09 21:53:55,815 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 570 transitions. [2021-07-09 21:53:55,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-07-09 21:53:55,815 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:55,815 INFO L508 BasicCegarLoop]: 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] [2021-07-09 21:53:55,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 21:53:55,816 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:55,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:55,816 INFO L82 PathProgramCache]: Analyzing trace with hash 692974268, now seen corresponding path program 1 times [2021-07-09 21:53:55,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:55,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266671115] [2021-07-09 21:53:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:55,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 21:53:55,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:55,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:55,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266671115] [2021-07-09 21:53:55,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266671115] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:55,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:55,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:53:55,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302377838] [2021-07-09 21:53:55,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:53:55,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:55,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:53:55,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,836 INFO L87 Difference]: Start difference. First operand 235 states and 570 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-07-09 21:53:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:55,848 INFO L93 Difference]: Finished difference Result 412 states and 1027 transitions. [2021-07-09 21:53:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:53:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-07-09 21:53:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:55,851 INFO L225 Difference]: With dead ends: 412 [2021-07-09 21:53:55,851 INFO L226 Difference]: Without dead ends: 399 [2021-07-09 21:53:55,851 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-07-09 21:53:55,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 245. [2021-07-09 21:53:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 2.430327868852459) internal successors, (593), 244 states have internal predecessors, (593), 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) [2021-07-09 21:53:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 593 transitions. [2021-07-09 21:53:55,858 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 593 transitions. Word has length 33 [2021-07-09 21:53:55,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:55,858 INFO L482 AbstractCegarLoop]: Abstraction has 245 states and 593 transitions. [2021-07-09 21:53:55,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-07-09 21:53:55,858 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 593 transitions. [2021-07-09 21:53:55,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-07-09 21:53:55,859 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:55,859 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:53:55,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 21:53:55,859 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:55,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:55,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1403637437, now seen corresponding path program 1 times [2021-07-09 21:53:55,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:55,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987800372] [2021-07-09 21:53:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:55,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:55,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:55,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:55,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987800372] [2021-07-09 21:53:55,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987800372] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:55,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:55,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:53:55,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212301817] [2021-07-09 21:53:55,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:53:55,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:55,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:53:55,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,881 INFO L87 Difference]: Start difference. First operand 245 states and 593 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:55,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:55,905 INFO L93 Difference]: Finished difference Result 279 states and 645 transitions. [2021-07-09 21:53:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:53:55,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-07-09 21:53:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:55,907 INFO L225 Difference]: With dead ends: 279 [2021-07-09 21:53:55,907 INFO L226 Difference]: Without dead ends: 279 [2021-07-09 21:53:55,908 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-07-09 21:53:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 272. [2021-07-09 21:53:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 2.339483394833948) internal successors, (634), 271 states have internal predecessors, (634), 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) [2021-07-09 21:53:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 634 transitions. [2021-07-09 21:53:55,930 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 634 transitions. Word has length 42 [2021-07-09 21:53:55,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:55,930 INFO L482 AbstractCegarLoop]: Abstraction has 272 states and 634 transitions. [2021-07-09 21:53:55,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 634 transitions. [2021-07-09 21:53:55,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-07-09 21:53:55,931 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:55,931 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:53:55,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 21:53:55,932 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:55,932 INFO L82 PathProgramCache]: Analyzing trace with hash -248676291, now seen corresponding path program 2 times [2021-07-09 21:53:55,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:55,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049116381] [2021-07-09 21:53:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:55,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:53:55,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:55,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:55,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:55,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049116381] [2021-07-09 21:53:55,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049116381] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:55,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:55,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:53:55,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876550631] [2021-07-09 21:53:55,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:53:55,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:55,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:53:55,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:55,955 INFO L87 Difference]: Start difference. First operand 272 states and 634 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:55,996 INFO L93 Difference]: Finished difference Result 272 states and 620 transitions. [2021-07-09 21:53:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:53:55,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-07-09 21:53:55,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:55,999 INFO L225 Difference]: With dead ends: 272 [2021-07-09 21:53:55,999 INFO L226 Difference]: Without dead ends: 272 [2021-07-09 21:53:56,002 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-07-09 21:53:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2021-07-09 21:53:56,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.2973977695167287) internal successors, (618), 269 states have internal predecessors, (618), 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) [2021-07-09 21:53:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 618 transitions. [2021-07-09 21:53:56,009 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 618 transitions. Word has length 42 [2021-07-09 21:53:56,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:56,010 INFO L482 AbstractCegarLoop]: Abstraction has 270 states and 618 transitions. [2021-07-09 21:53:56,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 618 transitions. [2021-07-09 21:53:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-07-09 21:53:56,011 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:53:56,011 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:53:56,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 21:53:56,011 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:53:56,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:53:56,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1133697535, now seen corresponding path program 3 times [2021-07-09 21:53:56,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:53:56,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66892790] [2021-07-09 21:53:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:53:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:53:56,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:56,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:56,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:56,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-09 21:53:56,068 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-09 21:53:56,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:56,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:53:56,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:53:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:53:56,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:53:56,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66892790] [2021-07-09 21:53:56,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66892790] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:53:56,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:53:56,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:53:56,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70503388] [2021-07-09 21:53:56,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:53:56,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:53:56,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:53:56,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:56,073 INFO L87 Difference]: Start difference. First operand 270 states and 618 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:56,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:53:56,099 INFO L93 Difference]: Finished difference Result 229 states and 499 transitions. [2021-07-09 21:53:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:53:56,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-07-09 21:53:56,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:53:56,100 INFO L225 Difference]: With dead ends: 229 [2021-07-09 21:53:56,100 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 21:53:56,100 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:53:56,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 21:53:56,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 21:53:56,101 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) [2021-07-09 21:53:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 21:53:56,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2021-07-09 21:53:56,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:53:56,101 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 21:53:56,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-07-09 21:53:56,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 21:53:56,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 21:53:56,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 21:53:56,102 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/2) [2021-07-09 21:53:56,102 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 21:53:56,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 09:53:56 BasicIcfg [2021-07-09 21:53:56,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 21:53:56,109 INFO L168 Benchmark]: Toolchain (without parser) took 2314.54 ms. Allocated memory was 190.8 MB in the beginning and 233.8 MB in the end (delta: 43.0 MB). Free memory was 154.1 MB in the beginning and 182.7 MB in the end (delta: -28.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:56,109 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 190.8 MB. Free memory is still 172.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 21:53:56,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.97 ms. Allocated memory is still 190.8 MB. Free memory was 153.9 MB in the beginning and 165.1 MB in the end (delta: -11.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:56,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.79 ms. Allocated memory is still 190.8 MB. Free memory was 165.1 MB in the beginning and 163.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:56,112 INFO L168 Benchmark]: Boogie Preprocessor took 14.45 ms. Allocated memory is still 190.8 MB. Free memory was 163.5 MB in the beginning and 161.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:56,113 INFO L168 Benchmark]: RCFGBuilder took 368.57 ms. Allocated memory is still 190.8 MB. Free memory was 161.9 MB in the beginning and 139.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-07-09 21:53:56,113 INFO L168 Benchmark]: TraceAbstraction took 1463.29 ms. Allocated memory was 190.8 MB in the beginning and 233.8 MB in the end (delta: 43.0 MB). Free memory was 138.9 MB in the beginning and 182.7 MB in the end (delta: -43.9 MB). Peak memory consumption was 188.2 kB. Max. memory is 8.0 GB. [2021-07-09 21:53:56,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 190.8 MB. Free memory is still 172.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 435.97 ms. Allocated memory is still 190.8 MB. Free memory was 153.9 MB in the beginning and 165.1 MB in the end (delta: -11.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.79 ms. Allocated memory is still 190.8 MB. Free memory was 165.1 MB in the beginning and 163.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.45 ms. Allocated memory is still 190.8 MB. Free memory was 163.5 MB in the beginning and 161.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 368.57 ms. Allocated memory is still 190.8 MB. Free memory was 161.9 MB in the beginning and 139.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1463.29 ms. Allocated memory was 190.8 MB in the beginning and 233.8 MB in the end (delta: 43.0 MB). Free memory was 138.9 MB in the beginning and 182.7 MB in the end (delta: -43.9 MB). Peak memory consumption was 188.2 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1635, positive: 1081, positive conditional: 1081, positive unconditional: 0, negative: 554, negative conditional: 554, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1134, positive: 1081, positive conditional: 0, positive unconditional: 1081, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1134, positive: 1081, positive conditional: 0, positive unconditional: 1081, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1134, positive: 1029, positive conditional: 0, positive unconditional: 1029, negative: 105, negative conditional: 0, negative unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 105, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 101, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1134, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1134, unknown conditional: 0, unknown unconditional: 1134] , Statistics on independence cache: Total cache size (in pairs): 1134, Positive cache size: 1081, Positive conditional cache size: 0, Positive unconditional cache size: 1081, Negative cache size: 53, Negative conditional cache size: 0, Negative unconditional cache size: 53, Independence queries for same thread: 501 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1583, positive: 939, positive conditional: 939, positive unconditional: 0, negative: 644, negative conditional: 644, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 992, positive: 939, positive conditional: 0, positive unconditional: 939, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 992, positive: 939, positive conditional: 0, positive unconditional: 939, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 992, positive: 887, positive conditional: 0, positive unconditional: 887, negative: 105, negative conditional: 0, negative unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 105, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 65, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 992, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 992, unknown conditional: 0, unknown unconditional: 992] , Statistics on independence cache: Total cache size (in pairs): 992, Positive cache size: 939, Positive conditional cache size: 0, Positive unconditional cache size: 939, Negative cache size: 53, Negative conditional cache size: 0, Negative unconditional cache size: 53, Independence queries for same thread: 591 - 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 89 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 968.6ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 23.2ms, AutomataDifference: 191.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 231.3ms, PartialOrderReductionTime: 218.1ms, HoareTripleCheckerStatistics: 389 SDtfs, 132 SDslu, 163 SDs, 0 SdLazy, 70 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=544occurred 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: 67.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 146 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.4ms SsaConstructionTime, 67.6ms SatisfiabilityAnalysisTime, 213.8ms InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 89 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 418.7ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 4.8ms, AutomataDifference: 120.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 99.4ms, PartialOrderReductionTime: 97.8ms, HoareTripleCheckerStatistics: 397 SDtfs, 102 SDslu, 179 SDs, 0 SdLazy, 70 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred 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: 41.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 163 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.5ms SsaConstructionTime, 16.9ms SatisfiabilityAnalysisTime, 94.2ms InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 187 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...