/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/concurrent/pthreads/regression/atomic/09a-return-after-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 16:30:55,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 16:30:55,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 16:30:55,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 16:30:55,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 16:30:55,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 16:30:55,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 16:30:55,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 16:30:55,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 16:30:55,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 16:30:55,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 16:30:55,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 16:30:55,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 16:30:55,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 16:30:55,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 16:30:55,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 16:30:56,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 16:30:56,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 16:30:56,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 16:30:56,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 16:30:56,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 16:30:56,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 16:30:56,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 16:30:56,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 16:30:56,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-16 16:30:56,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-16 16:30:56,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-16 16:30:56,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-16 16:30:56,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-16 16:30:56,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-16 16:30:56,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-16 16:30:56,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-16 16:30:56,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-16 16:30:56,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-16 16:30:56,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-16 16:30:56,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-16 16:30:56,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-16 16:30:56,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-16 16:30:56,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 16:30:56,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 16:30:56,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 16:30:56,052 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 [2021-06-16 16:30:56,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 16:30:56,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 16:30:56,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 16:30:56,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 16:30:56,088 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 16:30:56,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 16:30:56,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 16:30:56,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 16:30:56,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 16:30:56,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 16:30:56,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 16:30:56,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 16:30:56,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 16:30:56,090 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 16:30:56,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 16:30:56,090 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 16:30:56,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 16:30:56,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 16:30:56,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 16:30:56,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 16:30:56,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 16:30:56,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 16:30:56,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 16:30:56,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 16:30:56,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 16:30:56,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 16:30:56,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 16:30:56,092 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 16:30:56,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 16:30:56,093 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 16:30:56,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 16:30:56,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 16:30:56,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 16:30:56,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 16:30:56,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-16 16:30:56,403 INFO L275 PluginConnector]: CDTParser initialized [2021-06-16 16:30:56,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/09a-return-after-end.c [2021-06-16 16:30:56,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bdf717e7/fb0fc73a5eeb463a9f4ae1002b4391c7/FLAGd7945d800 [2021-06-16 16:30:56,866 INFO L306 CDTParser]: Found 1 translation units. [2021-06-16 16:30:56,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/09a-return-after-end.c [2021-06-16 16:30:56,866 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-16 16:30:56,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bdf717e7/fb0fc73a5eeb463a9f4ae1002b4391c7/FLAGd7945d800 [2021-06-16 16:30:56,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bdf717e7/fb0fc73a5eeb463a9f4ae1002b4391c7 [2021-06-16 16:30:56,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 16:30:56,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-16 16:30:56,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-16 16:30:56,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-16 16:30:56,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-16 16:30:56,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 04:30:56" (1/1) ... [2021-06-16 16:30:56,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245147ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:56, skipping insertion in model container [2021-06-16 16:30:56,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 04:30:56" (1/1) ... [2021-06-16 16:30:56,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-16 16:30:56,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-16 16:30:57,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 16:30:57,111 INFO L203 MainTranslator]: Completed pre-run [2021-06-16 16:30:57,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 16:30:57,141 INFO L208 MainTranslator]: Completed translation [2021-06-16 16:30:57,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57 WrapperNode [2021-06-16 16:30:57,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-16 16:30:57,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 16:30:57,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 16:30:57,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 16:30:57,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (1/1) ... [2021-06-16 16:30:57,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (1/1) ... [2021-06-16 16:30:57,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 16:30:57,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 16:30:57,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 16:30:57,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 16:30:57,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (1/1) ... [2021-06-16 16:30:57,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (1/1) ... [2021-06-16 16:30:57,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (1/1) ... [2021-06-16 16:30:57,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (1/1) ... [2021-06-16 16:30:57,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (1/1) ... [2021-06-16 16:30:57,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (1/1) ... [2021-06-16 16:30:57,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (1/1) ... [2021-06-16 16:30:57,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 16:30:57,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 16:30:57,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 16:30:57,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 16:30:57,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 16:30:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-16 16:30:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-16 16:30:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-16 16:30:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-16 16:30:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-16 16:30:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 16:30:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 16:30:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-16 16:30:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-16 16:30:57,292 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 16:30:57,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 16:30:57,533 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-16 16:30:57,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 04:30:57 BoogieIcfgContainer [2021-06-16 16:30:57,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 16:30:57,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 16:30:57,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 16:30:57,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 16:30:57,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.06 04:30:56" (1/3) ... [2021-06-16 16:30:57,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368a5293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 04:30:57, skipping insertion in model container [2021-06-16 16:30:57,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 04:30:57" (2/3) ... [2021-06-16 16:30:57,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368a5293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 04:30:57, skipping insertion in model container [2021-06-16 16:30:57,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 04:30:57" (3/3) ... [2021-06-16 16:30:57,541 INFO L111 eAbstractionObserver]: Analyzing ICFG 09a-return-after-end.c [2021-06-16 16:30:57,545 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 16:30:57,546 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 16:30:57,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 16:30:57,547 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 16:30:57,565 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,566 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,566 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,566 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,566 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,566 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,566 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,567 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,567 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,567 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,567 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,567 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,568 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,568 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,568 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,568 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,570 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,570 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,570 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,570 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 16:30:57,573 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-16 16:30:57,592 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-16 16:30:57,606 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 16:30:57,607 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 16:30:57,607 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 16:30:57,607 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 16:30:57,607 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 16:30:57,607 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 16:30:57,607 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 16:30:57,607 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 16:30:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 62 states have (on average 1.5) internal successors, (93), 71 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:30:57,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-16 16:30:57,684 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:30:57,684 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:30:57,685 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 16:30:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:30:57,689 INFO L82 PathProgramCache]: Analyzing trace with hash -816529340, now seen corresponding path program 1 times [2021-06-16 16:30:57,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:30:57,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311314161] [2021-06-16 16:30:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:30:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:30:57,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:30:57,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:30:57,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:30:57,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:30:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:30:57,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:30:57,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311314161] [2021-06-16 16:30:57,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311314161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:30:57,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:30:57,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-16 16:30:57,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078248155] [2021-06-16 16:30:57,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 16:30:57,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:30:57,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 16:30:57,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:30:57,845 INFO L87 Difference]: Start difference. First operand has 72 states, 62 states have (on average 1.5) internal successors, (93), 71 states have internal predecessors, (93), 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 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) [2021-06-16 16:30:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:30:57,874 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-06-16 16:30:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 16:30:57,876 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 [2021-06-16 16:30:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:30:57,882 INFO L225 Difference]: With dead ends: 87 [2021-06-16 16:30:57,882 INFO L226 Difference]: Without dead ends: 23 [2021-06-16 16:30:57,883 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:30:57,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-06-16 16:30:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-06-16 16:30:57,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:30:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-06-16 16:30:57,912 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2021-06-16 16:30:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:30:57,913 INFO L482 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-06-16 16:30:57,913 INFO L483 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) [2021-06-16 16:30:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-06-16 16:30:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-16 16:30:57,913 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:30:57,914 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:30:57,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 16:30:57,914 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 16:30:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:30:57,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1294333954, now seen corresponding path program 1 times [2021-06-16 16:30:57,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:30:57,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126636110] [2021-06-16 16:30:57,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:30:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:30:57,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:30:57,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:30:57,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:30:57,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:30:57,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:30:57,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:30:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:30:57,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:30:57,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126636110] [2021-06-16 16:30:57,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126636110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:30:57,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:30:57,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 16:30:57,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946017519] [2021-06-16 16:30:57,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 16:30:57,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:30:57,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 16:30:57,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:30:57,954 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:30:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:30:57,961 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-06-16 16:30:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 16:30:57,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-06-16 16:30:57,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:30:57,963 INFO L225 Difference]: With dead ends: 23 [2021-06-16 16:30:57,963 INFO L226 Difference]: Without dead ends: 21 [2021-06-16 16:30:57,964 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:30:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-06-16 16:30:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-06-16 16:30:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:30:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-06-16 16:30:57,968 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 18 [2021-06-16 16:30:57,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:30:57,968 INFO L482 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-06-16 16:30:57,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:30:57,968 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-06-16 16:30:57,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-16 16:30:57,969 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:30:57,969 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:30:57,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 16:30:57,969 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 16:30:57,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:30:57,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1294811974, now seen corresponding path program 2 times [2021-06-16 16:30:57,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:30:57,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784200517] [2021-06-16 16:30:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:30:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:30:57,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:30:57,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:30:57,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:30:57,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:30:58,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:30:58,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:30:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:30:58,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:30:58,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784200517] [2021-06-16 16:30:58,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784200517] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:30:58,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:30:58,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 16:30:58,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243066303] [2021-06-16 16:30:58,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 16:30:58,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:30:58,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 16:30:58,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-16 16:30:58,019 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:30:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:30:58,046 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-06-16 16:30:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 16:30:58,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2021-06-16 16:30:58,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:30:58,048 INFO L225 Difference]: With dead ends: 18 [2021-06-16 16:30:58,048 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 16:30:58,048 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-16 16:30:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 16:30:58,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 16:30:58,049 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) [2021-06-16 16:30:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 16:30:58,049 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-06-16 16:30:58,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:30:58,049 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 16:30:58,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 16:30:58,050 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 16:30:58,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 16:30:58,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 16:30:58,052 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 16:30:58,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 04:30:58 BasicIcfg [2021-06-16 16:30:58,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 16:30:58,055 INFO L168 Benchmark]: Toolchain (without parser) took 1131.34 ms. Allocated memory is still 199.2 MB. Free memory was 161.5 MB in the beginning and 128.7 MB in the end (delta: 32.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 8.0 GB. [2021-06-16 16:30:58,055 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 199.2 MB. Free memory is still 179.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 16:30:58,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.54 ms. Allocated memory is still 199.2 MB. Free memory was 161.4 MB in the beginning and 182.7 MB in the end (delta: -21.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2021-06-16 16:30:58,056 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.66 ms. Allocated memory is still 199.2 MB. Free memory was 182.1 MB in the beginning and 181.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 16:30:58,057 INFO L168 Benchmark]: Boogie Preprocessor took 18.35 ms. Allocated memory is still 199.2 MB. Free memory was 181.1 MB in the beginning and 180.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 16:30:58,057 INFO L168 Benchmark]: RCFGBuilder took 323.91 ms. Allocated memory is still 199.2 MB. Free memory was 179.9 MB in the beginning and 166.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-16 16:30:58,058 INFO L168 Benchmark]: TraceAbstraction took 517.78 ms. Allocated memory is still 199.2 MB. Free memory was 166.4 MB in the beginning and 129.2 MB in the end (delta: 37.2 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2021-06-16 16:30:58,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 199.2 MB. Free memory is still 179.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 217.54 ms. Allocated memory is still 199.2 MB. Free memory was 161.4 MB in the beginning and 182.7 MB in the end (delta: -21.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.66 ms. Allocated memory is still 199.2 MB. Free memory was 182.1 MB in the beginning and 181.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.35 ms. Allocated memory is still 199.2 MB. Free memory was 181.1 MB in the beginning and 180.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 323.91 ms. Allocated memory is still 199.2 MB. Free memory was 179.9 MB in the beginning and 166.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 517.78 ms. Allocated memory is still 199.2 MB. Free memory was 166.4 MB in the beginning and 129.2 MB in the end (delta: 37.2 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 67, positive: 51, positive conditional: 51, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 54, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 54, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 54, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 54, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 54, unknown conditional: 0, unknown unconditional: 54] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Independence queries for same thread: 13 - PositiveResult [Line: 36]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 35 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 446.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 8.2ms, AutomataDifference: 92.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 69.2ms, PartialOrderReductionTime: 60.1ms, HoareTripleCheckerStatistics: 64 SDtfs, 22 SDslu, 31 SDs, 0 SdLazy, 8 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.6ms SsaConstructionTime, 30.2ms SatisfiabilityAnalysisTime, 115.2ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...