/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:15:18,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:15:18,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:15:18,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:15:18,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:15:18,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:15:18,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:15:18,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:15:18,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:15:18,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:15:18,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:15:18,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:15:18,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:15:18,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:15:18,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:15:18,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:15:18,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:15:18,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:15:18,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:15:18,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:15:18,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:15:18,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:15:18,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:15:18,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:15:18,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 11:15:18,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:15:18,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:15:18,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:15:18,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:15:18,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:15:18,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:15:18,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:15:18,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:15:18,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:15:18,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:15:18,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:15:18,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:15:18,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:15:18,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:15:18,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:15:18,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:15:18,553 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:15:18,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:15:18,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:15:18,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:15:18,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:15:18,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:15:18,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:15:18,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:15:18,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:15:18,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:15:18,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:15:18,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:15:18,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:15:18,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:15:18,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:15:18,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:15:18,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:15:18,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:15:18,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:15:18,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:15:18,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:15:18,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:15:18,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:15:18,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:15:18,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:15:18,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:15:18,985 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:15:18,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/qw2004-2.i [2020-12-22 11:15:19,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566136cbc/12e1ce8ab70a4f049f520fb96b877409/FLAG34b37576f [2020-12-22 11:15:19,866 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:15:19,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-2.i [2020-12-22 11:15:19,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566136cbc/12e1ce8ab70a4f049f520fb96b877409/FLAG34b37576f [2020-12-22 11:15:20,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566136cbc/12e1ce8ab70a4f049f520fb96b877409 [2020-12-22 11:15:20,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:15:20,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:15:20,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:15:20,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:15:20,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:15:20,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789cce1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20, skipping insertion in model container [2020-12-22 11:15:20,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:15:20,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:15:20,651 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-2.i[30003,30016] [2020-12-22 11:15:20,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:15:20,690 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:15:20,757 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-2.i[30003,30016] [2020-12-22 11:15:20,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:15:20,858 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:15:20,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20 WrapperNode [2020-12-22 11:15:20,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:15:20,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:15:20,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:15:20,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:15:20,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:15:20,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:15:20,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:15:20,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:15:20,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (1/1) ... [2020-12-22 11:15:20,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:15:20,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:15:20,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:15:20,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:15:20,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (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 [2020-12-22 11:15:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-12-22 11:15:21,049 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-12-22 11:15:21,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:15:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:15:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:15:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:15:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:15:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:15:21,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:15:21,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:15:21,052 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:15:21,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:15:21,481 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-22 11:15:21,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:15:21 BoogieIcfgContainer [2020-12-22 11:15:21,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:15:21,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:15:21,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:15:21,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:15:21,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:15:20" (1/3) ... [2020-12-22 11:15:21,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dac696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:15:21, skipping insertion in model container [2020-12-22 11:15:21,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:15:20" (2/3) ... [2020-12-22 11:15:21,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dac696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:15:21, skipping insertion in model container [2020-12-22 11:15:21,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:15:21" (3/3) ... [2020-12-22 11:15:21,501 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-12-22 11:15:21,508 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:15:21,509 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:15:21,520 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:15:21,521 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:15:21,552 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,553 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,553 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,553 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,554 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,554 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,554 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,554 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,555 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,555 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,555 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,555 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,556 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,556 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,556 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,556 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,557 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,557 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,557 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,557 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,557 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,558 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,558 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,558 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,558 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,559 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,559 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,559 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,559 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,560 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,560 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,560 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,560 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,561 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,561 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,561 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,562 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,562 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,562 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,562 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,563 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,563 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,563 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,563 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,564 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,564 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,564 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,565 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,565 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,565 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,565 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,566 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,566 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,566 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,566 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,566 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,567 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,567 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,567 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,568 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,568 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,568 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,568 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,569 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,571 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,572 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,572 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,572 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~lse~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,572 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,573 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,573 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,573 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,573 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,573 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,574 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,574 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:15:21,577 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:15:21,603 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 11:15:21,647 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:15:21,648 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:15:21,648 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:15:21,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:15:21,648 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:15:21,648 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:15:21,648 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:15:21,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:15:21,677 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:15:21,679 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 96 transitions, 197 flow [2020-12-22 11:15:21,682 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 96 transitions, 197 flow [2020-12-22 11:15:21,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 197 flow [2020-12-22 11:15:21,748 INFO L129 PetriNetUnfolder]: 6/95 cut-off events. [2020-12-22 11:15:21,748 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:15:21,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 6/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2020-12-22 11:15:21,760 INFO L116 LiptonReduction]: Number of co-enabled transitions 2500 [2020-12-22 11:15:24,930 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-12-22 11:15:25,176 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-12-22 11:15:25,592 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-12-22 11:15:25,592 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:25,603 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-12-22 11:15:25,604 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:25,838 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 11:15:26,045 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 11:15:26,135 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-12-22 11:15:26,136 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:26,145 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 10, 1] term [2020-12-22 11:15:26,146 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:15:26,155 INFO L131 LiptonReduction]: Checked pairs total: 2930 [2020-12-22 11:15:26,155 INFO L133 LiptonReduction]: Total number of compositions: 108 [2020-12-22 11:15:26,163 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2020-12-22 11:15:26,175 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 42 states. [2020-12-22 11:15:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-22 11:15:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 11:15:26,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:15:26,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 11:15:26,186 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:15:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:15:26,193 INFO L82 PathProgramCache]: Analyzing trace with hash 12117398, now seen corresponding path program 1 times [2020-12-22 11:15:26,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:15:26,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915945785] [2020-12-22 11:15:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:15:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:15:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:15:26,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915945785] [2020-12-22 11:15:26,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:15:26,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 11:15:26,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654547723] [2020-12-22 11:15:26,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:15:26,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:15:26,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:15:26,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:15:26,465 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-12-22 11:15:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:15:26,495 INFO L93 Difference]: Finished difference Result 38 states and 71 transitions. [2020-12-22 11:15:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:15:26,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 11:15:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:15:26,508 INFO L225 Difference]: With dead ends: 38 [2020-12-22 11:15:26,509 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 11:15:26,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:15:26,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 11:15:26,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 11:15:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 11:15:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 39 transitions. [2020-12-22 11:15:26,557 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 39 transitions. Word has length 4 [2020-12-22 11:15:26,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:15:26,557 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 39 transitions. [2020-12-22 11:15:26,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:15:26,558 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 39 transitions. [2020-12-22 11:15:26,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:15:26,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:15:26,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:15:26,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:15:26,559 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:15:26,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:15:26,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1529002450, now seen corresponding path program 1 times [2020-12-22 11:15:26,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:15:26,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071013962] [2020-12-22 11:15:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:15:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:15:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:15:26,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071013962] [2020-12-22 11:15:26,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:15:26,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:15:26,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795867971] [2020-12-22 11:15:26,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:15:26,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:15:26,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:15:26,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:15:26,630 INFO L87 Difference]: Start difference. First operand 23 states and 39 transitions. Second operand 3 states. [2020-12-22 11:15:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:15:26,643 INFO L93 Difference]: Finished difference Result 28 states and 43 transitions. [2020-12-22 11:15:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:15:26,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-22 11:15:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:15:26,645 INFO L225 Difference]: With dead ends: 28 [2020-12-22 11:15:26,645 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 11:15:26,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:15:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 11:15:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 11:15:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 11:15:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2020-12-22 11:15:26,651 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 8 [2020-12-22 11:15:26,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:15:26,652 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2020-12-22 11:15:26,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:15:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2020-12-22 11:15:26,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:15:26,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:15:26,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:15:26,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:15:26,653 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:15:26,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:15:26,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1271192399, now seen corresponding path program 1 times [2020-12-22 11:15:26,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:15:26,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168506145] [2020-12-22 11:15:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:15:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:15:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:15:26,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168506145] [2020-12-22 11:15:26,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:15:26,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:15:26,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006222806] [2020-12-22 11:15:26,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:15:26,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:15:26,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:15:26,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:15:26,764 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand 4 states. [2020-12-22 11:15:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:15:26,789 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-12-22 11:15:26,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:15:26,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 11:15:26,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:15:26,791 INFO L225 Difference]: With dead ends: 27 [2020-12-22 11:15:26,791 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 11:15:26,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:15:26,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 11:15:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-22 11:15:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-22 11:15:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2020-12-22 11:15:26,797 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 10 [2020-12-22 11:15:26,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:15:26,798 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-12-22 11:15:26,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:15:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-12-22 11:15:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:15:26,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:15:26,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:15:26,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:15:26,802 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:15:26,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:15:26,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1368463667, now seen corresponding path program 2 times [2020-12-22 11:15:26,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:15:26,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320381924] [2020-12-22 11:15:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:15:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 11:15:26,857 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 11:15:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 11:15:26,894 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 11:15:26,921 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 11:15:26,921 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 11:15:26,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:15:26,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:15:26 BasicIcfg [2020-12-22 11:15:26,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:15:26,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:15:26,959 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:15:26,959 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:15:26,960 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:15:21" (3/4) ... [2020-12-22 11:15:26,962 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 11:15:27,047 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-lit/qw2004-2.i-witness.graphml [2020-12-22 11:15:27,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:15:27,049 INFO L168 Benchmark]: Toolchain (without parser) took 6967.93 ms. Allocated memory was 159.4 MB in the beginning and 232.8 MB in the end (delta: 73.4 MB). Free memory was 132.5 MB in the beginning and 122.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:27,049 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:15:27,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.11 ms. Allocated memory is still 159.4 MB. Free memory was 132.2 MB in the beginning and 101.4 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:27,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.40 ms. Allocated memory is still 159.4 MB. Free memory was 101.4 MB in the beginning and 99.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:27,052 INFO L168 Benchmark]: Boogie Preprocessor took 30.21 ms. Allocated memory is still 159.4 MB. Free memory was 99.3 MB in the beginning and 98.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:27,052 INFO L168 Benchmark]: RCFGBuilder took 538.64 ms. Allocated memory is still 159.4 MB. Free memory was 98.0 MB in the beginning and 71.4 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:27,053 INFO L168 Benchmark]: TraceAbstraction took 5467.06 ms. Allocated memory was 159.4 MB in the beginning and 232.8 MB in the end (delta: 73.4 MB). Free memory was 71.0 MB in the beginning and 125.6 MB in the end (delta: -54.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:27,054 INFO L168 Benchmark]: Witness Printer took 88.38 ms. Allocated memory is still 232.8 MB. Free memory was 125.6 MB in the beginning and 122.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:15:27,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 774.11 ms. Allocated memory is still 159.4 MB. Free memory was 132.2 MB in the beginning and 101.4 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.40 ms. Allocated memory is still 159.4 MB. Free memory was 101.4 MB in the beginning and 99.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.21 ms. Allocated memory is still 159.4 MB. Free memory was 99.3 MB in the beginning and 98.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 538.64 ms. Allocated memory is still 159.4 MB. Free memory was 98.0 MB in the beginning and 71.4 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5467.06 ms. Allocated memory was 159.4 MB in the beginning and 232.8 MB in the end (delta: 73.4 MB). Free memory was 71.0 MB in the beginning and 125.6 MB in the end (delta: -54.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. * Witness Printer took 88.38 ms. Allocated memory is still 232.8 MB. Free memory was 125.6 MB in the beginning and 122.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1897 VarBasedMoverChecksPositive, 50 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 48 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.4s, 94 PlacesBefore, 18 PlacesAfterwards, 96 TransitionsBefore, 16 TransitionsAfterwards, 2500 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 4 ChoiceCompositions, 108 TotalNumberOfCompositions, 2930 MoverChecksTotal - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L755] 0 pthread_t t; [L756] 0 pendingIo = 1 [L757] 0 stoppingFlag = 0 [L758] 0 stoppingEvent = 0 [L759] 0 stopped = 0 [L760] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L734] 0 int status; [L703] 0 int lsf = stoppingFlag; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L744] 1 stoppingFlag = 1 [L725] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L726] 1 pending = dec() VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 [L748] 1 int lse = stoppingEvent; [L705] COND FALSE 0 !(\read(lsf)) [L709] 0 int lp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L735] 0 status = BCSP_IoIncrement() [L686] COND FALSE 1 !(!cond) [L751] 1 stopped = 1 [L752] 1 return 0; [L736] COND TRUE 0 status == 0 [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 44 SDtfs, 22 SDslu, 26 SDs, 0 SdLazy, 13 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...