/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:06:15,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:06:15,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:06:15,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:06:15,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:06:15,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:06:15,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:06:15,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:06:15,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:06:15,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:06:15,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:06:15,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:06:15,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:06:15,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:06:15,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:06:15,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:06:15,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:06:15,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:06:15,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:06:15,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:06:15,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:06:15,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:06:15,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:06:15,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:06:15,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:06:15,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:06:15,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:06:15,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:06:15,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:06:15,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:06:15,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:06:15,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:06:15,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:06:15,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:06:15,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:06:15,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:06:15,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:06:15,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:06:15,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:06:15,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:06:15,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:06:15,550 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 20:06:15,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:06:15,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:06:15,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:06:15,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:06:15,568 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:06:15,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:06:15,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:06:15,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:06:15,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:06:15,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:06:15,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:06:15,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:06:15,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:06:15,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:06:15,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:06:15,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:06:15,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:06:15,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:06:15,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:06:15,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:06:15,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:06:15,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:06:15,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:06:15,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:06:15,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:06:15,572 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:06:15,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:06:15,573 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:06:15,573 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:06:15,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:06:15,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:06:15,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:06:15,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:06:15,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:06:15,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:06:15,924 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:06:15,926 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin000_tso.opt.i [2020-04-18 20:06:16,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9297860e7/8c771357acdc4aeabdd9446eb1c812a4/FLAG17e59c314 [2020-04-18 20:06:16,517 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:06:16,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_tso.opt.i [2020-04-18 20:06:16,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9297860e7/8c771357acdc4aeabdd9446eb1c812a4/FLAG17e59c314 [2020-04-18 20:06:16,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9297860e7/8c771357acdc4aeabdd9446eb1c812a4 [2020-04-18 20:06:16,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:06:16,860 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:06:16,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:06:16,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:06:16,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:06:16,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:06:16" (1/1) ... [2020-04-18 20:06:16,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e69f865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:16, skipping insertion in model container [2020-04-18 20:06:16,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:06:16" (1/1) ... [2020-04-18 20:06:16,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:06:16,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:06:17,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:06:17,447 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:06:17,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:06:17,594 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:06:17,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17 WrapperNode [2020-04-18 20:06:17,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:06:17,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:06:17,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:06:17,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:06:17,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (1/1) ... [2020-04-18 20:06:17,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (1/1) ... [2020-04-18 20:06:17,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:06:17,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:06:17,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:06:17,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:06:17,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (1/1) ... [2020-04-18 20:06:17,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (1/1) ... [2020-04-18 20:06:17,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (1/1) ... [2020-04-18 20:06:17,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (1/1) ... [2020-04-18 20:06:17,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (1/1) ... [2020-04-18 20:06:17,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (1/1) ... [2020-04-18 20:06:17,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (1/1) ... [2020-04-18 20:06:17,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:06:17,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:06:17,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:06:17,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:06:17,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (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 [2020-04-18 20:06:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:06:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:06:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:06:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:06:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:06:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:06:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:06:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:06:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:06:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:06:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:06:17,763 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 20:06:18,158 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:06:18,158 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:06:18,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:06:18 BoogieIcfgContainer [2020-04-18 20:06:18,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:06:18,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:06:18,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:06:18,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:06:18,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:06:16" (1/3) ... [2020-04-18 20:06:18,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8fc13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:06:18, skipping insertion in model container [2020-04-18 20:06:18,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:17" (2/3) ... [2020-04-18 20:06:18,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8fc13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:06:18, skipping insertion in model container [2020-04-18 20:06:18,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:06:18" (3/3) ... [2020-04-18 20:06:18,172 INFO L109 eAbstractionObserver]: Analyzing ICFG thin000_tso.opt.i [2020-04-18 20:06:18,183 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:06:18,184 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:06:18,192 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:06:18,193 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:06:18,220 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,220 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,221 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,221 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,221 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,222 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,222 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,222 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,223 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,223 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,223 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,224 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,228 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,228 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,229 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,229 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,234 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,234 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,234 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,235 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:18,253 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 20:06:18,270 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:06:18,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:06:18,271 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:06:18,271 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:06:18,271 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:06:18,271 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:06:18,272 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:06:18,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:06:18,285 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 20:06:18,356 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1121 states. [2020-04-18 20:06:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states. [2020-04-18 20:06:18,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 20:06:18,377 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:06:18,378 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:06:18,379 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:06:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:18,386 INFO L82 PathProgramCache]: Analyzing trace with hash 441942769, now seen corresponding path program 1 times [2020-04-18 20:06:18,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:06:18,394 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [888828303] [2020-04-18 20:06:18,410 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:18,422 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 20:06:18,424 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 20:06:18,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 20:06:18,425 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:06:18,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:18,426 INFO L82 PathProgramCache]: Analyzing trace with hash 441942769, now seen corresponding path program 2 times [2020-04-18 20:06:18,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:18,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663480043] [2020-04-18 20:06:18,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:18,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663480043] [2020-04-18 20:06:18,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:18,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:18,991 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:19,023 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:19,038 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 20:06:19,038 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:19,113 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:06:19,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:19,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:06:19,119 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states. [2020-04-18 20:06:19,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:19,233 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-04-18 20:06:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2020-04-18 20:06:19,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:19,234 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [888828303] [2020-04-18 20:06:19,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:06:19,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:06:19,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [888828303] [2020-04-18 20:06:19,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:06:19,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:06:19,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:19,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 20:06:19,243 INFO L87 Difference]: Start difference. First operand 1121 states. Second operand 7 states. [2020-04-18 20:06:19,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:19,388 INFO L93 Difference]: Finished difference Result 1513 states and 3945 transitions. [2020-04-18 20:06:19,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:06:19,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-04-18 20:06:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:06:19,409 INFO L225 Difference]: With dead ends: 1513 [2020-04-18 20:06:19,409 INFO L226 Difference]: Without dead ends: 596 [2020-04-18 20:06:19,411 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 20:06:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-04-18 20:06:19,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2020-04-18 20:06:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-04-18 20:06:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 1507 transitions. [2020-04-18 20:06:19,526 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 1507 transitions. Word has length 31 [2020-04-18 20:06:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:06:19,526 INFO L479 AbstractCegarLoop]: Abstraction has 596 states and 1507 transitions. [2020-04-18 20:06:19,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:06:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1507 transitions. [2020-04-18 20:06:19,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-04-18 20:06:19,533 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:06:19,533 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:06:19,534 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:06:19,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash 256262898, now seen corresponding path program 1 times [2020-04-18 20:06:19,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:06:19,535 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [938657874] [2020-04-18 20:06:19,536 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:19,538 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 97 transitions. [2020-04-18 20:06:19,541 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 20:06:19,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-04-18 20:06:19,545 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:06:19,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:19,550 INFO L82 PathProgramCache]: Analyzing trace with hash 256262898, now seen corresponding path program 2 times [2020-04-18 20:06:19,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:19,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891274393] [2020-04-18 20:06:19,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:19,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891274393] [2020-04-18 20:06:19,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:19,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:19,736 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:19,739 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:19,744 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 73 transitions. [2020-04-18 20:06:19,744 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:19,790 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:06:19,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:19,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:06:19,791 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 7 states. [2020-04-18 20:06:19,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:19,866 INFO L93 Difference]: Finished difference Result 66 states and 97 transitions. [2020-04-18 20:06:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2020-04-18 20:06:19,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:19,867 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [938657874] [2020-04-18 20:06:19,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:06:19,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:06:19,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [938657874] [2020-04-18 20:06:19,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:06:19,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:06:19,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:19,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 20:06:19,869 INFO L87 Difference]: Start difference. First operand 596 states and 1507 transitions. Second operand 7 states. [2020-04-18 20:06:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:19,966 INFO L93 Difference]: Finished difference Result 676 states and 1686 transitions. [2020-04-18 20:06:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:06:19,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-04-18 20:06:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:06:19,973 INFO L225 Difference]: With dead ends: 676 [2020-04-18 20:06:19,973 INFO L226 Difference]: Without dead ends: 536 [2020-04-18 20:06:19,975 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 20:06:19,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-04-18 20:06:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2020-04-18 20:06:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-04-18 20:06:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 1339 transitions. [2020-04-18 20:06:20,018 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 1339 transitions. Word has length 33 [2020-04-18 20:06:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:06:20,018 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 1339 transitions. [2020-04-18 20:06:20,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:06:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 1339 transitions. [2020-04-18 20:06:20,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 20:06:20,021 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:06:20,021 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:06:20,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:06:20,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:20,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1419898419, now seen corresponding path program 1 times [2020-04-18 20:06:20,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:06:20,024 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [94707740] [2020-04-18 20:06:20,025 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:20,027 INFO L259 McrAutomatonBuilder]: Finished intersection with 144 states and 299 transitions. [2020-04-18 20:06:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-04-18 20:06:20,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 20:06:20,034 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:06:20,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:20,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1455513139, now seen corresponding path program 2 times [2020-04-18 20:06:20,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:20,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458877852] [2020-04-18 20:06:20,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:20,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458877852] [2020-04-18 20:06:20,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:20,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:20,256 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:20,260 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:20,274 INFO L259 McrAutomatonBuilder]: Finished intersection with 87 states and 149 transitions. [2020-04-18 20:06:20,275 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:20,363 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:06:20,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:20,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:06:20,364 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 7 states. [2020-04-18 20:06:20,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:20,485 INFO L93 Difference]: Finished difference Result 162 states and 326 transitions. [2020-04-18 20:06:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 326 transitions. [2020-04-18 20:06:20,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 20:06:20,486 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:06:20,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1419898419, now seen corresponding path program 3 times [2020-04-18 20:06:20,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:20,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485344356] [2020-04-18 20:06:20,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:20,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485344356] [2020-04-18 20:06:20,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:20,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:20,619 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:20,623 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:20,632 INFO L259 McrAutomatonBuilder]: Finished intersection with 96 states and 179 transitions. [2020-04-18 20:06:20,632 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:20,911 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 20:06:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 20:06:20,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-04-18 20:06:20,912 INFO L87 Difference]: Start difference. First operand 162 states and 326 transitions. Second operand 16 states. [2020-04-18 20:06:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:21,194 INFO L93 Difference]: Finished difference Result 162 states and 326 transitions. [2020-04-18 20:06:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 326 transitions. [2020-04-18 20:06:21,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:21,196 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [94707740] [2020-04-18 20:06:21,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:06:21,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:06:21,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [94707740] [2020-04-18 20:06:21,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 20:06:21,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:06:21,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 20:06:21,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2020-04-18 20:06:21,199 INFO L87 Difference]: Start difference. First operand 536 states and 1339 transitions. Second operand 17 states. [2020-04-18 20:06:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:21,399 INFO L93 Difference]: Finished difference Result 746 states and 1852 transitions. [2020-04-18 20:06:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 20:06:21,400 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2020-04-18 20:06:21,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:06:21,403 INFO L225 Difference]: With dead ends: 746 [2020-04-18 20:06:21,403 INFO L226 Difference]: Without dead ends: 401 [2020-04-18 20:06:21,404 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=327, Invalid=729, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 20:06:21,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-04-18 20:06:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2020-04-18 20:06:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-04-18 20:06:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 955 transitions. [2020-04-18 20:06:21,417 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 955 transitions. Word has length 35 [2020-04-18 20:06:21,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:06:21,417 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 955 transitions. [2020-04-18 20:06:21,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 20:06:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 955 transitions. [2020-04-18 20:06:21,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:06:21,419 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:06:21,419 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:06:21,419 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:06:21,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:21,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1552303459, now seen corresponding path program 1 times [2020-04-18 20:06:21,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:06:21,420 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [974934314] [2020-04-18 20:06:21,421 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:21,425 INFO L259 McrAutomatonBuilder]: Finished intersection with 187 states and 408 transitions. [2020-04-18 20:06:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-04-18 20:06:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:06:21,428 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:06:21,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:21,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2123736695, now seen corresponding path program 2 times [2020-04-18 20:06:21,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:21,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553323058] [2020-04-18 20:06:21,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:21,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553323058] [2020-04-18 20:06:21,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:21,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:21,527 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:21,530 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:21,553 INFO L259 McrAutomatonBuilder]: Finished intersection with 117 states and 220 transitions. [2020-04-18 20:06:21,553 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:21,593 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:06:21,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:21,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:06:21,594 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 7 states. [2020-04-18 20:06:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:21,715 INFO L93 Difference]: Finished difference Result 211 states and 446 transitions. [2020-04-18 20:06:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 446 transitions. [2020-04-18 20:06:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:06:21,717 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:06:21,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1641479599, now seen corresponding path program 3 times [2020-04-18 20:06:21,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:21,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642699881] [2020-04-18 20:06:21,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:21,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642699881] [2020-04-18 20:06:21,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:21,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:21,868 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:21,872 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:21,883 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 180 transitions. [2020-04-18 20:06:21,883 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:21,923 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:06:21,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:21,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-04-18 20:06:21,924 INFO L87 Difference]: Start difference. First operand 211 states and 446 transitions. Second operand 7 states. [2020-04-18 20:06:22,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:22,010 INFO L93 Difference]: Finished difference Result 211 states and 446 transitions. [2020-04-18 20:06:22,010 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 446 transitions. [2020-04-18 20:06:22,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:22,011 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [974934314] [2020-04-18 20:06:22,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:06:22,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:06:22,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [974934314] [2020-04-18 20:06:22,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 20:06:22,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:06:22,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 20:06:22,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-04-18 20:06:22,013 INFO L87 Difference]: Start difference. First operand 401 states and 955 transitions. Second operand 9 states. [2020-04-18 20:06:22,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:22,139 INFO L93 Difference]: Finished difference Result 361 states and 853 transitions. [2020-04-18 20:06:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 20:06:22,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-04-18 20:06:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:06:22,140 INFO L225 Difference]: With dead ends: 361 [2020-04-18 20:06:22,141 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:06:22,141 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-04-18 20:06:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:06:22,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:06:22,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:06:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:06:22,142 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-04-18 20:06:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:06:22,144 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:06:22,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 20:06:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:06:22,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:22,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:06:22 BasicIcfg [2020-04-18 20:06:22,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:06:22,162 INFO L168 Benchmark]: Toolchain (without parser) took 5316.34 ms. Allocated memory was 140.0 MB in the beginning and 284.2 MB in the end (delta: 144.2 MB). Free memory was 102.5 MB in the beginning and 243.9 MB in the end (delta: -141.4 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:22,163 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 20:06:22,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.43 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 160.4 MB in the end (delta: -59.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:22,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.67 ms. Allocated memory is still 202.9 MB. Free memory was 160.4 MB in the beginning and 157.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:22,171 INFO L168 Benchmark]: Boogie Preprocessor took 47.57 ms. Allocated memory is still 202.9 MB. Free memory was 157.8 MB in the beginning and 156.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:22,172 INFO L168 Benchmark]: RCFGBuilder took 464.95 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 136.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:22,172 INFO L168 Benchmark]: TraceAbstraction took 3989.92 ms. Allocated memory was 202.9 MB in the beginning and 284.2 MB in the end (delta: 81.3 MB). Free memory was 135.9 MB in the beginning and 243.9 MB in the end (delta: -108.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 20:06:22,180 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 734.43 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 160.4 MB in the end (delta: -59.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.67 ms. Allocated memory is still 202.9 MB. Free memory was 160.4 MB in the beginning and 157.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.57 ms. Allocated memory is still 202.9 MB. Free memory was 157.8 MB in the beginning and 156.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.95 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 136.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3989.92 ms. Allocated memory was 202.9 MB in the beginning and 284.2 MB in the end (delta: 81.3 MB). Free memory was 135.9 MB in the beginning and 243.9 MB in the end (delta: -108.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 275 SDtfs, 766 SDslu, 1132 SDs, 0 SdLazy, 154 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1121occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 correct! Received shutdown request...