/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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/11a-double-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:16:36,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:16:36,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:16:36,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 08:16:36,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 08:16:36,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 08:16:36,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 08:16:36,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 08:16:36,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 08:16:36,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 08:16:36,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 08:16:36,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 08:16:36,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 08:16:36,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 08:16:36,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 08:16:36,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 08:16:36,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 08:16:36,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 08:16:36,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 08:16:36,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 08:16:36,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 08:16:36,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 08:16:36,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 08:16:36,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 08:16:36,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-13 08:16:36,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-13 08:16:36,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-13 08:16:36,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-13 08:16:36,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-13 08:16:36,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-13 08:16:36,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 08:16:36,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 08:16:36,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 08:16:36,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 08:16:36,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 08:16:36,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 08:16:36,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 08:16:36,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 08:16:36,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 08:16:36,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 08:16:36,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 08:16:36,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 08:16:36,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:16:36,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:16:36,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:16:36,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:16:36,544 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:16:36,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:16:36,545 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:16:36,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:16:36,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:16:36,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:16:36,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:16:36,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:16:36,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:16:36,547 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:16:36,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:16:36,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:16:36,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:16:36,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:16:36,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:16:36,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:16:36,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:16:36,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:16:36,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:16:36,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:16:36,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:16:36,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:16:36,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:16:36,550 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:16:36,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:16:36,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:16:36,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:16:36,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:16:36,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:16:36,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 08:16:36,957 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 08:16:36,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/11a-double-end.c [2021-06-13 08:16:37,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f609b262c/c9d83839d02b49c188c2496a1195e94d/FLAG9d905c555 [2021-06-13 08:16:37,741 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 08:16:37,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/11a-double-end.c [2021-06-13 08:16:37,742 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-13 08:16:37,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f609b262c/c9d83839d02b49c188c2496a1195e94d/FLAG9d905c555 [2021-06-13 08:16:38,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f609b262c/c9d83839d02b49c188c2496a1195e94d [2021-06-13 08:16:38,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:16:38,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 08:16:38,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 08:16:38,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 08:16:38,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 08:16:38,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497b7811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38, skipping insertion in model container [2021-06-13 08:16:38,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 08:16:38,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 08:16:38,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 08:16:38,383 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 08:16:38,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 08:16:38,429 INFO L208 MainTranslator]: Completed translation [2021-06-13 08:16:38,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38 WrapperNode [2021-06-13 08:16:38,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 08:16:38,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:16:38,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:16:38,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:16:38,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:16:38,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:16:38,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:16:38,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:16:38,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (1/1) ... [2021-06-13 08:16:38,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:16:38,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:16:38,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:16:38,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:16:38,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (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 [2021-06-13 08:16:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 08:16:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 08:16:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 08:16:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-13 08:16:38,631 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-13 08:16:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:16:38,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:16:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 08:16:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 08:16:38,635 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 08:16:38,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:16:38,863 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-13 08:16:38,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:16:38 BoogieIcfgContainer [2021-06-13 08:16:38,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:16:38,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:16:38,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:16:38,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:16:38,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 08:16:38" (1/3) ... [2021-06-13 08:16:38,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c98a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:16:38, skipping insertion in model container [2021-06-13 08:16:38,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 08:16:38" (2/3) ... [2021-06-13 08:16:38,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c98a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:16:38, skipping insertion in model container [2021-06-13 08:16:38,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:16:38" (3/3) ... [2021-06-13 08:16:38,871 INFO L111 eAbstractionObserver]: Analyzing ICFG 11a-double-end.c [2021-06-13 08:16:38,889 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:16:38,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 08:16:38,902 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 08:16:38,949 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,949 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,949 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,949 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,950 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,950 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,950 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,950 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,950 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,951 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,951 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,951 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,953 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,953 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,965 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,965 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:16:38,973 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 08:16:39,009 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 08:16:39,035 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:16:39,035 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:16:39,035 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:16:39,035 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:16:39,035 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:16:39,035 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:16:39,035 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:16:39,036 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:16:39,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 61 flow [2021-06-13 08:16:39,066 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-06-13 08:16:39,066 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:16:39,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-13 08:16:39,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 28 transitions, 61 flow [2021-06-13 08:16:39,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 47 flow [2021-06-13 08:16:39,078 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-06-13 08:16:39,079 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:16:39,079 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:16:39,079 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:16:39,080 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:16:39,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:16:39,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2066339343, now seen corresponding path program 1 times [2021-06-13 08:16:39,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:16:39,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981660838] [2021-06-13 08:16:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:16:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:16:39,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:16:39,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:16:39,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:16:39,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:16:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:16:39,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:16:39,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981660838] [2021-06-13 08:16:39,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981660838] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:16:39,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:16:39,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-13 08:16:39,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974041284] [2021-06-13 08:16:39,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:16:39,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:16:39,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:16:39,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:16:39,285 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 28 [2021-06-13 08:16:39,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-06-13 08:16:39,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:16:39,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 28 [2021-06-13 08:16:39,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:16:39,344 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-06-13 08:16:39,344 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:16:39,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-06-13 08:16:39,346 INFO L132 encePairwiseOnDemand]: 25/28 looper letters, 2 selfloop transitions, 2 changer transitions 1/23 dead transitions. [2021-06-13 08:16:39,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 59 flow [2021-06-13 08:16:39,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:16:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:16:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2021-06-13 08:16:39,365 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2021-06-13 08:16:39,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2021-06-13 08:16:39,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2021-06-13 08:16:39,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:16:39,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2021-06-13 08:16:39,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-06-13 08:16:39,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-06-13 08:16:39,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-06-13 08:16:39,378 INFO L185 Difference]: Start difference. First operand has 26 places, 22 transitions, 47 flow. Second operand 3 states and 75 transitions. [2021-06-13 08:16:39,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 59 flow [2021-06-13 08:16:39,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 58 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:16:39,386 INFO L241 Difference]: Finished difference. Result has 28 places, 22 transitions, 54 flow [2021-06-13 08:16:39,388 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2021-06-13 08:16:39,389 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2021-06-13 08:16:39,389 INFO L482 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 54 flow [2021-06-13 08:16:39,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-06-13 08:16:39,389 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:16:39,389 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:16:39,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:16:39,390 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:16:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:16:39,391 INFO L82 PathProgramCache]: Analyzing trace with hash 907750228, now seen corresponding path program 1 times [2021-06-13 08:16:39,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:16:39,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889978723] [2021-06-13 08:16:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:16:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:16:39,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:16:39,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:16:39,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:16:39,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:16:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:16:39,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:16:39,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889978723] [2021-06-13 08:16:39,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889978723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:16:39,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:16:39,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-13 08:16:39,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452388905] [2021-06-13 08:16:39,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:16:39,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:16:39,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:16:39,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:16:39,477 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 28 [2021-06-13 08:16:39,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-06-13 08:16:39,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:16:39,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 28 [2021-06-13 08:16:39,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:16:39,500 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-06-13 08:16:39,500 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-13 08:16:39,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 21 events. 0/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-13 08:16:39,501 INFO L132 encePairwiseOnDemand]: 26/28 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2021-06-13 08:16:39,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 56 flow [2021-06-13 08:16:39,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:16:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:16:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2021-06-13 08:16:39,505 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8690476190476191 [2021-06-13 08:16:39,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2021-06-13 08:16:39,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2021-06-13 08:16:39,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:16:39,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2021-06-13 08:16:39,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-06-13 08:16:39,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-06-13 08:16:39,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-06-13 08:16:39,507 INFO L185 Difference]: Start difference. First operand has 28 places, 22 transitions, 54 flow. Second operand 3 states and 73 transitions. [2021-06-13 08:16:39,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 56 flow [2021-06-13 08:16:39,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 08:16:39,512 INFO L241 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2021-06-13 08:16:39,512 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2021-06-13 08:16:39,513 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-06-13 08:16:39,513 INFO L482 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2021-06-13 08:16:39,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-06-13 08:16:39,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 08:16:39,516 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 08:16:39,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 08:16:39 BasicIcfg [2021-06-13 08:16:39,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 08:16:39,520 INFO L168 Benchmark]: Toolchain (without parser) took 1357.15 ms. Allocated memory is still 186.6 MB. Free memory was 146.8 MB in the beginning and 123.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:39,521 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 186.6 MB. Free memory is still 166.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:16:39,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.51 ms. Allocated memory is still 186.6 MB. Free memory was 146.6 MB in the beginning and 169.1 MB in the end (delta: -22.5 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:39,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.11 ms. Allocated memory is still 186.6 MB. Free memory was 169.1 MB in the beginning and 168.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:39,523 INFO L168 Benchmark]: Boogie Preprocessor took 26.65 ms. Allocated memory is still 186.6 MB. Free memory was 168.0 MB in the beginning and 167.0 MB in the end (delta: 996.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:39,524 INFO L168 Benchmark]: RCFGBuilder took 352.03 ms. Allocated memory is still 186.6 MB. Free memory was 166.9 MB in the beginning and 153.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:39,526 INFO L168 Benchmark]: TraceAbstraction took 652.72 ms. Allocated memory is still 186.6 MB. Free memory was 153.4 MB in the beginning and 123.0 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-06-13 08:16:39,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 186.6 MB. Free memory is still 166.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.51 ms. Allocated memory is still 186.6 MB. Free memory was 146.6 MB in the beginning and 169.1 MB in the end (delta: -22.5 MB). Peak memory consumption was 8.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.11 ms. Allocated memory is still 186.6 MB. Free memory was 169.1 MB in the beginning and 168.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.65 ms. Allocated memory is still 186.6 MB. Free memory was 168.0 MB in the beginning and 167.0 MB in the end (delta: 996.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 352.03 ms. Allocated memory is still 186.6 MB. Free memory was 166.9 MB in the beginning and 153.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 652.72 ms. Allocated memory is still 186.6 MB. Free memory was 153.4 MB in the beginning and 123.0 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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. EmptinessCheckTime: 7.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 483.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 147.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=1, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.5ms SsaConstructionTime, 25.6ms SatisfiabilityAnalysisTime, 135.2ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...