/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/18-conditional-atomic.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 20:31:25,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 20:31:25,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 20:31:25,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 20:31:25,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 20:31:25,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 20:31:25,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 20:31:25,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 20:31:25,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 20:31:25,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 20:31:26,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 20:31:26,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-10 20:31:26,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 20:31:26,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 20:31:26,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 20:31:26,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 20:31:26,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 20:31:26,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 20:31:26,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 20:31:26,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 20:31:26,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 20:31:26,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 20:31:26,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 20:31:26,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 20:31:26,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 20:31:26,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-10 20:31:26,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-10 20:31:26,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-10 20:31:26,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-10 20:31:26,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-10 20:31:26,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-10 20:31:26,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-10 20:31:26,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-10 20:31:26,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 20:31:26,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 20:31:26,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 20:31:26,035 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.epf [2021-03-10 20:31:26,070 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 20:31:26,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 20:31:26,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 20:31:26,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 20:31:26,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 20:31:26,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 20:31:26,071 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 20:31:26,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 20:31:26,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 20:31:26,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 20:31:26,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 20:31:26,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 20:31:26,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 20:31:26,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 20:31:26,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 20:31:26,073 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 20:31:26,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 20:31:26,073 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 20:31:26,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 20:31:26,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 20:31:26,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 20:31:26,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 20:31:26,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 20:31:26,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 20:31:26,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 20:31:26,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 20:31:26,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 20:31:26,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 20:31:26,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 20:31:26,079 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 20:31:26,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 20:31:26,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 20:31:26,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 20:31:26,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 20:31:26,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 20:31:26,377 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 20:31:26,379 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 20:31:26,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/18-conditional-atomic.c [2021-03-10 20:31:26,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e38e07d/4587d0307c5f4b38bd6e56f638ac8107/FLAGdc5b7249d [2021-03-10 20:31:26,826 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 20:31:26,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/18-conditional-atomic.c [2021-03-10 20:31:26,827 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-10 20:31:26,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e38e07d/4587d0307c5f4b38bd6e56f638ac8107/FLAGdc5b7249d [2021-03-10 20:31:27,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e38e07d/4587d0307c5f4b38bd6e56f638ac8107 [2021-03-10 20:31:27,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 20:31:27,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 20:31:27,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 20:31:27,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 20:31:27,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 20:31:27,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43dbc36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27, skipping insertion in model container [2021-03-10 20:31:27,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 20:31:27,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 20:31:27,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 20:31:27,334 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 20:31:27,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 20:31:27,396 INFO L208 MainTranslator]: Completed translation [2021-03-10 20:31:27,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27 WrapperNode [2021-03-10 20:31:27,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 20:31:27,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 20:31:27,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 20:31:27,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 20:31:27,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 20:31:27,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 20:31:27,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 20:31:27,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 20:31:27,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (1/1) ... [2021-03-10 20:31:27,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 20:31:27,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 20:31:27,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 20:31:27,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 20:31:27,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 20:31:27,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 20:31:27,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 20:31:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 20:31:27,524 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-10 20:31:27,524 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-10 20:31:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 20:31:27,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 20:31:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 20:31:27,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 20:31:27,526 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 20:31:27,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 20:31:27,945 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-10 20:31:27,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:31:27 BoogieIcfgContainer [2021-03-10 20:31:27,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 20:31:27,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 20:31:27,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 20:31:27,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 20:31:27,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 08:31:27" (1/3) ... [2021-03-10 20:31:27,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bea36ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:31:27, skipping insertion in model container [2021-03-10 20:31:27,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 08:31:27" (2/3) ... [2021-03-10 20:31:27,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bea36ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 08:31:27, skipping insertion in model container [2021-03-10 20:31:27,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 08:31:27" (3/3) ... [2021-03-10 20:31:27,953 INFO L111 eAbstractionObserver]: Analyzing ICFG 18-conditional-atomic.c [2021-03-10 20:31:27,958 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 20:31:27,958 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 20:31:27,961 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 20:31:27,962 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 20:31:27,979 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,979 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,980 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,980 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,981 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,981 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,981 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,981 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,981 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,981 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,981 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,982 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,982 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,982 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,982 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,983 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,983 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,983 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,984 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,984 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,984 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,984 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,986 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,986 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,986 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,986 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,986 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,987 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,987 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,987 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 20:31:27,989 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 20:31:28,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-10 20:31:28,018 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 20:31:28,018 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 20:31:28,018 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 20:31:28,019 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 20:31:28,019 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 20:31:28,019 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 20:31:28,019 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 20:31:28,019 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 20:31:28,026 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions, 53 flow [2021-03-10 20:31:28,034 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 56 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 55 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:31:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 55 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:31:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-10 20:31:28,040 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:31:28,040 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:31:28,041 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:31:28,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:31:28,045 INFO L82 PathProgramCache]: Analyzing trace with hash -79539314, now seen corresponding path program 1 times [2021-03-10 20:31:28,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:31:28,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313354341] [2021-03-10 20:31:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:31:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:31:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:31:28,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313354341] [2021-03-10 20:31:28,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:31:28,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 20:31:28,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017902169] [2021-03-10 20:31:28,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 20:31:28,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:31:28,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 20:31:28,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:31:28,210 INFO L87 Difference]: Start difference. First operand has 56 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 55 states have internal predecessors, (87), 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 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:31:28,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:31:28,243 INFO L93 Difference]: Finished difference Result 54 states and 83 transitions. [2021-03-10 20:31:28,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 20:31:28,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-03-10 20:31:28,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:31:28,250 INFO L225 Difference]: With dead ends: 54 [2021-03-10 20:31:28,250 INFO L226 Difference]: Without dead ends: 29 [2021-03-10 20:31:28,251 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:31:28,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-03-10 20:31:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-03-10 20:31:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:31:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2021-03-10 20:31:28,280 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 14 [2021-03-10 20:31:28,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:31:28,280 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2021-03-10 20:31:28,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:31:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2021-03-10 20:31:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-10 20:31:28,281 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 20:31:28,281 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 20:31:28,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 20:31:28,281 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-10 20:31:28,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 20:31:28,282 INFO L82 PathProgramCache]: Analyzing trace with hash 872139309, now seen corresponding path program 1 times [2021-03-10 20:31:28,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 20:31:28,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061893315] [2021-03-10 20:31:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 20:31:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 20:31:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 20:31:28,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061893315] [2021-03-10 20:31:28,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 20:31:28,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 20:31:28,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128594474] [2021-03-10 20:31:28,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 20:31:28,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 20:31:28,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 20:31:28,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:31:28,338 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:31:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 20:31:28,343 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2021-03-10 20:31:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 20:31:28,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2021-03-10 20:31:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 20:31:28,344 INFO L225 Difference]: With dead ends: 26 [2021-03-10 20:31:28,344 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 20:31:28,344 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 20:31:28,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 20:31:28,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 20:31:28,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:31:28,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 20:31:28,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-03-10 20:31:28,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 20:31:28,345 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 20:31:28,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 20:31:28,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 20:31:28,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 20:31:28,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 20:31:28,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 08:31:28 BasicIcfg [2021-03-10 20:31:28,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 20:31:28,351 INFO L168 Benchmark]: Toolchain (without parser) took 1134.56 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 234.4 MB in the beginning and 313.3 MB in the end (delta: -78.9 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.0 GB. [2021-03-10 20:31:28,351 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:31:28,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.08 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 233.8 MB in the beginning and 369.5 MB in the end (delta: -135.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-10 20:31:28,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.89 ms. Allocated memory is still 385.9 MB. Free memory was 369.5 MB in the beginning and 368.5 MB in the end (delta: 973.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:31:28,353 INFO L168 Benchmark]: Boogie Preprocessor took 24.51 ms. Allocated memory is still 385.9 MB. Free memory was 368.5 MB in the beginning and 367.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 20:31:28,353 INFO L168 Benchmark]: RCFGBuilder took 492.91 ms. Allocated memory is still 385.9 MB. Free memory was 367.1 MB in the beginning and 341.2 MB in the end (delta: 25.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-10 20:31:28,354 INFO L168 Benchmark]: TraceAbstraction took 401.46 ms. Allocated memory is still 385.9 MB. Free memory was 341.2 MB in the beginning and 313.3 MB in the end (delta: 28.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-10 20:31:28,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 177.08 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 233.8 MB in the beginning and 369.5 MB in the end (delta: -135.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.89 ms. Allocated memory is still 385.9 MB. Free memory was 369.5 MB in the beginning and 368.5 MB in the end (delta: 973.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.51 ms. Allocated memory is still 385.9 MB. Free memory was 368.5 MB in the beginning and 367.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 492.91 ms. Allocated memory is still 385.9 MB. Free memory was 367.1 MB in the beginning and 341.2 MB in the end (delta: 25.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 401.46 ms. Allocated memory is still 385.9 MB. Free memory was 341.2 MB in the beginning and 313.3 MB in the end (delta: 28.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 330.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.9ms, AutomataDifference: 65.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 16 SDslu, 18 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.1ms SsaConstructionTime, 30.1ms SatisfiabilityAnalysisTime, 94.9ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...