/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/14a-subsequent-blocks.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 23:46:26,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 23:46:26,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 23:46:26,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 23:46:26,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 23:46:26,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 23:46:26,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 23:46:26,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 23:46:26,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 23:46:26,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 23:46:26,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 23:46:26,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 23:46:26,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 23:46:26,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 23:46:26,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 23:46:26,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 23:46:26,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 23:46:26,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 23:46:26,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 23:46:26,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 23:46:26,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 23:46:26,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 23:46:26,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 23:46:26,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 23:46:26,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 23:46:26,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 23:46:26,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 23:46:26,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 23:46:26,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 23:46:26,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 23:46:26,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 23:46:26,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 23:46:26,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 23:46:26,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 23:46:26,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 23:46:26,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 23:46:26,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 23:46:26,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 23:46:26,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 23:46:26,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 23:46:26,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 23:46:26,353 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-SemanticLbe.epf [2021-06-10 23:46:26,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 23:46:26,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 23:46:26,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 23:46:26,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 23:46:26,381 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 23:46:26,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 23:46:26,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 23:46:26,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 23:46:26,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 23:46:26,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 23:46:26,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 23:46:26,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 23:46:26,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 23:46:26,382 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 23:46:26,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 23:46:26,382 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 23:46:26,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 23:46:26,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 23:46:26,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 23:46:26,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 23:46:26,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 23:46:26,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:46:26,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 23:46:26,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 23:46:26,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 23:46:26,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 23:46:26,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 23:46:26,383 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 23:46:26,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 23:46:26,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 23:46:26,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 23:46:26,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 23:46:26,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 23:46:26,586 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 23:46:26,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/14a-subsequent-blocks.c [2021-06-10 23:46:26,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84332188f/0f759e929afe4562b459eb780deb3511/FLAGad18fea9c [2021-06-10 23:46:26,929 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 23:46:26,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/14a-subsequent-blocks.c [2021-06-10 23:46:26,929 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-10 23:46:26,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84332188f/0f759e929afe4562b459eb780deb3511/FLAGad18fea9c [2021-06-10 23:46:27,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84332188f/0f759e929afe4562b459eb780deb3511 [2021-06-10 23:46:27,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 23:46:27,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 23:46:27,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 23:46:27,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 23:46:27,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 23:46:27,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75238f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27, skipping insertion in model container [2021-06-10 23:46:27,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 23:46:27,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 23:46:27,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 23:46:27,511 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 23:46:27,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 23:46:27,544 INFO L208 MainTranslator]: Completed translation [2021-06-10 23:46:27,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27 WrapperNode [2021-06-10 23:46:27,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 23:46:27,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 23:46:27,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 23:46:27,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 23:46:27,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 23:46:27,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 23:46:27,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 23:46:27,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 23:46:27,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (1/1) ... [2021-06-10 23:46:27,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 23:46:27,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 23:46:27,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 23:46:27,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 23:46:27,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:46:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 23:46:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 23:46:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 23:46:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-10 23:46:27,630 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-10 23:46:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 23:46:27,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 23:46:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 23:46:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 23:46:27,632 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 23:46:27,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 23:46:27,816 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-10 23:46:27,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:46:27 BoogieIcfgContainer [2021-06-10 23:46:27,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 23:46:27,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 23:46:27,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 23:46:27,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 23:46:27,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 11:46:27" (1/3) ... [2021-06-10 23:46:27,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f4563b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:46:27, skipping insertion in model container [2021-06-10 23:46:27,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:27" (2/3) ... [2021-06-10 23:46:27,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f4563b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:46:27, skipping insertion in model container [2021-06-10 23:46:27,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:46:27" (3/3) ... [2021-06-10 23:46:27,822 INFO L111 eAbstractionObserver]: Analyzing ICFG 14a-subsequent-blocks.c [2021-06-10 23:46:27,825 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 23:46:27,828 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 23:46:27,828 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 23:46:27,840 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,840 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,840 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,840 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,840 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,841 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,841 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,841 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,841 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,841 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,841 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,841 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,843 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,843 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,843 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,843 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:27,845 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 23:46:27,856 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-10 23:46:27,868 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 23:46:27,869 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 23:46:27,869 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 23:46:27,869 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 23:46:27,869 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 23:46:27,869 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 23:46:27,869 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 23:46:27,869 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 23:46:27,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 51 flow [2021-06-10 23:46:27,887 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-06-10 23:46:27,887 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:46:27,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 23:46:27,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 23 transitions, 51 flow [2021-06-10 23:46:27,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 41 flow [2021-06-10 23:46:27,895 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 23:46:27,906 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 19 transitions, 41 flow [2021-06-10 23:46:27,911 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 19 transitions, 41 flow [2021-06-10 23:46:27,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 41 flow [2021-06-10 23:46:27,927 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-06-10 23:46:27,927 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:46:27,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 19 events. 0/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 23:46:27,929 INFO L151 LiptonReduction]: Number of co-enabled transitions 42 [2021-06-10 23:46:27,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:27,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:28,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:28,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:28,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:28,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:28,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:28,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:28,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:28,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:28,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:28,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:28,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:28,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:28,217 INFO L142 QuantifierPusher]: treesize reduction -2, result has 125.0 percent of original size [2021-06-10 23:46:28,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:46:28,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:28,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:28,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:28,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:46:28,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:28,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:46:28,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 23:46:28,381 INFO L163 LiptonReduction]: Checked pairs total: 25 [2021-06-10 23:46:28,381 INFO L165 LiptonReduction]: Total number of compositions: 15 [2021-06-10 23:46:28,383 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 489 [2021-06-10 23:46:28,388 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-06-10 23:46:28,388 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:46:28,388 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:46:28,388 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-06-10 23:46:28,388 INFO L428 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:46:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:46:28,392 INFO L82 PathProgramCache]: Analyzing trace with hash 100819, now seen corresponding path program 1 times [2021-06-10 23:46:28,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:46:28,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974660144] [2021-06-10 23:46:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:46:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:46:28,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:28,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:46:28,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974660144] [2021-06-10 23:46:28,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:46:28,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 23:46:28,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384403679] [2021-06-10 23:46:28,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 23:46:28,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:46:28,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 23:46:28,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 23:46:28,474 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 38 [2021-06-10 23:46:28,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 8 places, 4 transitions, 11 flow. Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 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) [2021-06-10 23:46:28,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:46:28,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 38 [2021-06-10 23:46:28,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:46:28,478 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-06-10 23:46:28,478 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:46:28,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8 conditions, 3 events. 0/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/4 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 23:46:28,479 INFO L132 encePairwiseOnDemand]: 37/38 looper letters, 0 selfloop transitions, 0 changer transitions 3/3 dead transitions. [2021-06-10 23:46:28,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 8 places, 3 transitions, 9 flow [2021-06-10 23:46:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 23:46:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 23:46:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 73 transitions. [2021-06-10 23:46:28,485 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9605263157894737 [2021-06-10 23:46:28,485 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 73 transitions. [2021-06-10 23:46:28,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 73 transitions. [2021-06-10 23:46:28,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:46:28,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 73 transitions. [2021-06-10 23:46:28,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 36.5) internal successors, (73), 2 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) [2021-06-10 23:46:28,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-06-10 23:46:28,491 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-06-10 23:46:28,492 INFO L185 Difference]: Start difference. First operand has 8 places, 4 transitions, 11 flow. Second operand 2 states and 73 transitions. [2021-06-10 23:46:28,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 8 places, 3 transitions, 9 flow [2021-06-10 23:46:28,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 7 places, 3 transitions, 8 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:46:28,494 INFO L241 Difference]: Finished difference. Result has 7 places, 0 transitions, 0 flow [2021-06-10 23:46:28,495 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=7, PETRI_TRANSITIONS=0} [2021-06-10 23:46:28,495 INFO L343 CegarLoopForPetriNet]: 8 programPoint places, -1 predicate places. [2021-06-10 23:46:28,496 INFO L480 AbstractCegarLoop]: Abstraction has has 7 places, 0 transitions, 0 flow [2021-06-10 23:46:28,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 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) [2021-06-10 23:46:28,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 23:46:28,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:46:28 BasicIcfg [2021-06-10 23:46:28,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 23:46:28,499 INFO L168 Benchmark]: Toolchain (without parser) took 1131.36 ms. Allocated memory is still 381.7 MB. Free memory was 344.0 MB in the beginning and 252.6 MB in the end (delta: 91.4 MB). Peak memory consumption was 90.9 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:28,499 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 381.7 MB. Free memory was 362.0 MB in the beginning and 361.9 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:46:28,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.59 ms. Allocated memory is still 381.7 MB. Free memory was 343.7 MB in the beginning and 365.9 MB in the end (delta: -22.1 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:28,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.53 ms. Allocated memory is still 381.7 MB. Free memory was 365.9 MB in the beginning and 363.8 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:46:28,500 INFO L168 Benchmark]: Boogie Preprocessor took 9.51 ms. Allocated memory is still 381.7 MB. Free memory was 363.8 MB in the beginning and 362.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:46:28,501 INFO L168 Benchmark]: RCFGBuilder took 238.71 ms. Allocated memory is still 381.7 MB. Free memory was 362.7 MB in the beginning and 348.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:28,501 INFO L168 Benchmark]: TraceAbstraction took 680.17 ms. Allocated memory is still 381.7 MB. Free memory was 348.1 MB in the beginning and 252.6 MB in the end (delta: 95.4 MB). Peak memory consumption was 96.5 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:28,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 381.7 MB. Free memory was 362.0 MB in the beginning and 361.9 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 177.59 ms. Allocated memory is still 381.7 MB. Free memory was 343.7 MB in the beginning and 365.9 MB in the end (delta: -22.1 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.53 ms. Allocated memory is still 381.7 MB. Free memory was 365.9 MB in the beginning and 363.8 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.51 ms. Allocated memory is still 381.7 MB. Free memory was 363.8 MB in the beginning and 362.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 238.71 ms. Allocated memory is still 381.7 MB. Free memory was 362.7 MB in the beginning and 348.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 680.17 ms. Allocated memory is still 381.7 MB. Free memory was 348.1 MB in the beginning and 252.6 MB in the end (delta: 95.4 MB). Peak memory consumption was 96.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 470.2ms, 23 PlacesBefore, 8 PlacesAfterwards, 19 TransitionsBefore, 4 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 15 TotalNumberOfCompositions, 25 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 25, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 25, unknown conditional: 0, unknown unconditional: 25] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 630.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 24.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 517.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, 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: 2.4ms SsaConstructionTime, 8.4ms SatisfiabilityAnalysisTime, 12.9ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 2 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...