/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-POR-DelaySleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 20:06:51,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 20:06:51,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 20:06:51,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 20:06:51,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 20:06:51,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 20:06:51,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 20:06:51,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 20:06:51,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 20:06:51,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 20:06:51,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 20:06:51,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 20:06:51,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 20:06:51,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 20:06:51,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 20:06:51,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 20:06:51,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-06 20:06:51,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 20:06:51,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 20:06:51,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 20:06:51,105 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-POR-DelaySleep-NoLbe-Random521.epf [2021-06-06 20:06:51,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 20:06:51,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 20:06:51,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 20:06:51,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 20:06:51,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 20:06:51,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 20:06:51,145 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 20:06:51,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 20:06:51,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 20:06:51,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 20:06:51,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 20:06:51,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 20:06:51,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 20:06:51,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 20:06:51,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 20:06:51,147 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 20:06:51,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 20:06:51,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 20:06:51,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 20:06:51,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 20:06:51,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 20:06:51,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 20:06:51,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 20:06:51,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 20:06:51,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 20:06:51,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 20:06:51,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 20:06:51,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 20:06:51,148 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 20:06:51,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 20:06:51,148 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 20:06:51,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 20:06:51,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 20:06:51,149 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 20:06:51,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 20:06:51,149 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 20:06:51,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 20:06:51,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 20:06:51,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 20:06:51,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-06 20:06:51,489 INFO L275 PluginConnector]: CDTParser initialized [2021-06-06 20:06:51,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-06-06 20:06:51,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef6ceb99/f9b5ed4415244c39a64b3115e5565ab7/FLAGa7f6beb62 [2021-06-06 20:06:51,964 INFO L306 CDTParser]: Found 1 translation units. [2021-06-06 20:06:51,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-06-06 20:06:51,965 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-06 20:06:51,965 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-06 20:06:51,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef6ceb99/f9b5ed4415244c39a64b3115e5565ab7/FLAGa7f6beb62 [2021-06-06 20:06:52,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef6ceb99/f9b5ed4415244c39a64b3115e5565ab7 [2021-06-06 20:06:52,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 20:06:52,383 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-06 20:06:52,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-06 20:06:52,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-06 20:06:52,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-06 20:06:52,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da269c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52, skipping insertion in model container [2021-06-06 20:06:52,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-06 20:06:52,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-06 20:06:52,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-06 20:06:52,533 INFO L203 MainTranslator]: Completed pre-run [2021-06-06 20:06:52,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-06 20:06:52,559 INFO L208 MainTranslator]: Completed translation [2021-06-06 20:06:52,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52 WrapperNode [2021-06-06 20:06:52,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-06 20:06:52,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 20:06:52,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 20:06:52,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 20:06:52,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 20:06:52,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 20:06:52,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 20:06:52,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 20:06:52,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (1/1) ... [2021-06-06 20:06:52,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 20:06:52,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 20:06:52,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 20:06:52,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 20:06:52,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (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 [2021-06-06 20:06:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-06 20:06:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-06-06 20:06:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-06-06 20:06:52,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 20:06:52,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 20:06:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-06 20:06:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-06 20:06:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-06 20:06:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2021-06-06 20:06:52,706 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2021-06-06 20:06:52,707 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 20:06:53,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 20:06:53,032 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-06 20:06:53,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 08:06:53 BoogieIcfgContainer [2021-06-06 20:06:53,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 20:06:53,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 20:06:53,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 20:06:53,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 20:06:53,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.06 08:06:52" (1/3) ... [2021-06-06 20:06:53,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ac3b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 08:06:53, skipping insertion in model container [2021-06-06 20:06:53,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.06 08:06:52" (2/3) ... [2021-06-06 20:06:53,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ac3b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 08:06:53, skipping insertion in model container [2021-06-06 20:06:53,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 08:06:53" (3/3) ... [2021-06-06 20:06:53,040 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest1.c [2021-06-06 20:06:53,045 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 20:06:53,045 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 20:06:53,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 20:06:53,048 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 20:06:53,078 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,078 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,078 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,078 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,079 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,079 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,079 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,079 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,079 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,079 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,079 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,080 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,080 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,080 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,080 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,080 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,080 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,081 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,081 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,081 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,081 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,081 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,081 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,081 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,082 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,082 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,082 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,082 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,082 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,082 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,083 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,083 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,083 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,083 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,083 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,083 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,085 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,085 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,086 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,086 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,086 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,091 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,092 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,092 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,092 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,092 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-06 20:06:53,102 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-06 20:06:53,122 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-06 20:06:53,174 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 20:06:53,174 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 20:06:53,174 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 20:06:53,174 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 20:06:53,174 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 20:06:53,174 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 20:06:53,175 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 20:06:53,175 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 20:06:53,221 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 20:06:53,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 20:06:53,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1882765180, now seen corresponding path program 1 times [2021-06-06 20:06:53,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 20:06:53,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615589577] [2021-06-06 20:06:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 20:06:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 20:06:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 20:06:53,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 20:06:53,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615589577] [2021-06-06 20:06:53,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615589577] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 20:06:53,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 20:06:53,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-06 20:06:53,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796131664] [2021-06-06 20:06:53,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 20:06:53,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 20:06:53,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 20:06:53,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 20:06:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 20:06:53,422 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 20:06:53,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-06-06 20:06:53,424 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 20:06:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 20:06:53,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 20:06:53,505 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 20:06:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 20:06:53,506 INFO L82 PathProgramCache]: Analyzing trace with hash -654859021, now seen corresponding path program 1 times [2021-06-06 20:06:53,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 20:06:53,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121610411] [2021-06-06 20:06:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 20:06:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-06 20:06:53,533 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-06 20:06:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-06 20:06:53,555 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-06 20:06:53,576 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-06 20:06:53,577 INFO L655 BasicCegarLoop]: Counterexample might be feasible [2021-06-06 20:06:53,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 20:06:53,584 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-06 20:06:53,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.06 08:06:53 BasicIcfg [2021-06-06 20:06:53,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-06 20:06:53,615 INFO L168 Benchmark]: Toolchain (without parser) took 1231.60 ms. Allocated memory is still 339.7 MB. Free memory was 302.1 MB in the beginning and 268.0 MB in the end (delta: 34.1 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.0 GB. [2021-06-06 20:06:53,615 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 339.7 MB. Free memory is still 320.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 20:06:53,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.07 ms. Allocated memory is still 339.7 MB. Free memory was 302.0 MB in the beginning and 323.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-06-06 20:06:53,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 339.7 MB. Free memory was 323.6 MB in the beginning and 321.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 20:06:53,621 INFO L168 Benchmark]: Boogie Preprocessor took 28.74 ms. Allocated memory is still 339.7 MB. Free memory was 321.5 MB in the beginning and 320.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 20:06:53,621 INFO L168 Benchmark]: RCFGBuilder took 392.84 ms. Allocated memory is still 339.7 MB. Free memory was 320.5 MB in the beginning and 304.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-06 20:06:53,622 INFO L168 Benchmark]: TraceAbstraction took 578.51 ms. Allocated memory is still 339.7 MB. Free memory was 304.7 MB in the beginning and 268.0 MB in the end (delta: 36.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.0 GB. [2021-06-06 20:06:53,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 339.7 MB. Free memory is still 320.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 176.07 ms. Allocated memory is still 339.7 MB. Free memory was 302.0 MB in the beginning and 323.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 339.7 MB. Free memory was 323.6 MB in the beginning and 321.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.74 ms. Allocated memory is still 339.7 MB. Free memory was 321.5 MB in the beginning and 320.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 392.84 ms. Allocated memory is still 339.7 MB. Free memory was 320.5 MB in the beginning and 304.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 578.51 ms. Allocated memory is still 339.7 MB. Free memory was 304.7 MB in the beginning and 268.0 MB in the end (delta: 36.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 85, positive: 76, positive conditional: 76, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 80, positive: 76, positive conditional: 76, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 80, positive: 76, positive conditional: 0, positive unconditional: 76, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 58, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 58, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 38, negative conditional: 4, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 80, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 58, unknown conditional: 0, unknown unconditional: 58] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 6, Negative conditional cache size: 2, Negative unconditional cache size: 4, SemanticConditionEliminator.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 2, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 2, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 38, negative conditional: 4, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 6, Negative conditional cache size: 2, Negative unconditional cache size: 4, Eliminated conditions: 2 ], Maximal queried relation: 1, Independence queries for same thread: 5 - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int x = 0; VAL [x=0] [L27] 0 pthread_t first_th_id; VAL [x=0] [L28] 0 pthread_t second_th_id; VAL [x=0] [L30] FCALL, FORK 0 pthread_create(&first_th_id, NULL, inc, NULL) VAL [n={0:0}, x=0] [L17] 1 x++ VAL [n={0:0}, n={0:0}, x=0, x++=0] [L17] 1 x++ VAL [n={0:0}, n={0:0}, x=1] [L18] 1 return NULL; VAL [\result={0:0}, n={0:0}, n={0:0}, x=1] [L31] FCALL, FORK 0 pthread_create(&second_th_id, NULL, dec, NULL) VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1] [L22] 2 x-- VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1, x--=1] [L33] 0 \read(first_th_id) VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1, x--=1] [L33] FCALL, JOIN 1 pthread_join(first_th_id, NULL) VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1, x--=1] [L34] 0 int y = x; VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1, x--=1] [L22] 2 x-- VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=0, x--=1] [L36] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=0, x--=1] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 64 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 445.2ms, OverallIterations: 2, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.9ms, PartialOrderReductionTime: 110.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 7.5ms SsaConstructionTime, 52.0ms SatisfiabilityAnalysisTime, 61.8ms InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 37 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...