/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-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:27:32,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:27:32,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:27:32,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:27:32,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:27:32,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:27:32,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:27:32,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:27:32,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:27:32,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:27:32,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:27:32,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:27:32,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:27:32,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:27:32,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:27:32,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:27:32,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:27:32,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:27:32,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:27:32,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:27:32,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:27:32,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:27:32,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:27:32,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:27:32,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:27:32,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:27:32,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:27:32,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:27:32,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:27:32,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:27:32,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:27:32,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:27:32,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:27:32,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:27:32,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:27:32,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:27:32,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:27:32,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:27:32,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:27:32,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:27:32,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:27:32,690 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-SemanticLbe-McrStrategy.epf [2020-04-18 11:27:32,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:27:32,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:27:32,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:27:32,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:27:32,706 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:27:32,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:27:32,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:27:32,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:27:32,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:27:32,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:27:32,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:27:32,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:27:32,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:27:32,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:27:32,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:27:32,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:27:32,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:27:32,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:27:32,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:27:32,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:27:32,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:27:32,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:27:32,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:27:32,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:27:32,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:27:32,710 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:27:32,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:27:32,710 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:27:32,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:27:32,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:27:32,989 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:27:33,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:27:33,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:27:33,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:27:33,007 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:27:33,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.opt.i [2020-04-18 11:27:33,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72901d86c/0a949b969d7b40989ed040ca371fa1ae/FLAGada6086d4 [2020-04-18 11:27:33,585 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:27:33,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_pso.opt.i [2020-04-18 11:27:33,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72901d86c/0a949b969d7b40989ed040ca371fa1ae/FLAGada6086d4 [2020-04-18 11:27:33,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72901d86c/0a949b969d7b40989ed040ca371fa1ae [2020-04-18 11:27:33,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:27:33,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:27:33,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:33,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:27:33,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:27:33,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:33" (1/1) ... [2020-04-18 11:27:33,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2962a3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:33, skipping insertion in model container [2020-04-18 11:27:33,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:33" (1/1) ... [2020-04-18 11:27:33,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:27:34,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:27:34,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:34,560 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:27:34,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:34,691 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:27:34,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34 WrapperNode [2020-04-18 11:27:34,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:34,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:34,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:27:34,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:27:34,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (1/1) ... [2020-04-18 11:27:34,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (1/1) ... [2020-04-18 11:27:34,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:34,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:27:34,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:27:34,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:27:34,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (1/1) ... [2020-04-18 11:27:34,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (1/1) ... [2020-04-18 11:27:34,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (1/1) ... [2020-04-18 11:27:34,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (1/1) ... [2020-04-18 11:27:34,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (1/1) ... [2020-04-18 11:27:34,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (1/1) ... [2020-04-18 11:27:34,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (1/1) ... [2020-04-18 11:27:34,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:27:34,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:27:34,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:27:34,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:27:34,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (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 11:27:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:27:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:27:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:27:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:27:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:27:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:27:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:27:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:27:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:27:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:27:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:27:34,850 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 11:27:35,192 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:27:35,193 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:27:35,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:35 BoogieIcfgContainer [2020-04-18 11:27:35,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:27:35,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:27:35,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:27:35,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:27:35,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:27:33" (1/3) ... [2020-04-18 11:27:35,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:35, skipping insertion in model container [2020-04-18 11:27:35,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:34" (2/3) ... [2020-04-18 11:27:35,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:35, skipping insertion in model container [2020-04-18 11:27:35,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:35" (3/3) ... [2020-04-18 11:27:35,208 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_pso.opt.i [2020-04-18 11:27:35,219 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:27:35,219 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:27:35,226 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:27:35,227 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:27:35,253 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,253 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,253 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,254 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,254 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,254 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,255 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,255 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,255 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,255 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,256 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,256 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,260 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,261 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,261 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,261 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,267 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,267 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,267 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,268 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:35,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 11:27:35,307 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:27:35,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:27:35,308 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:27:35,308 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:27:35,308 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:27:35,308 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:27:35,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:27:35,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:27:35,322 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-04-18 11:27:35,323 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 11:27:35,367 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 11:27:35,368 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:35,372 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 11:27:35,375 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 11:27:35,398 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 11:27:35,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:35,400 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 11:27:35,403 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 11:27:35,406 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:27:36,968 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1294 [2020-04-18 11:27:36,968 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-18 11:27:36,974 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 11:27:36,989 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 11:27:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 11:27:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:27:37,000 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:37,001 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 11:27:37,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:37,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 1 times [2020-04-18 11:27:37,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:37,015 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1358612772] [2020-04-18 11:27:37,028 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:37,037 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:27:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 11:27:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:27:37,038 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:37,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 2 times [2020-04-18 11:27:37,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:37,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469261929] [2020-04-18 11:27:37,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:37,342 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 11:27:37,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469261929] [2020-04-18 11:27:37,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:37,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:37,348 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:37,352 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:37,355 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:27:37,356 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:37,376 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:37,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:37,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:37,386 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2020-04-18 11:27:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:37,416 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 11:27:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 11:27:37,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:37,417 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1358612772] [2020-04-18 11:27:37,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:37,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:37,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1358612772] [2020-04-18 11:27:37,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:27:37,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:37,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:37,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:37,433 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-04-18 11:27:37,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:37,489 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-04-18 11:27:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:27:37,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-04-18 11:27:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:37,505 INFO L225 Difference]: With dead ends: 63 [2020-04-18 11:27:37,505 INFO L226 Difference]: Without dead ends: 40 [2020-04-18 11:27:37,508 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:37,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-18 11:27:37,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-18 11:27:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-18 11:27:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-18 11:27:37,556 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2020-04-18 11:27:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:37,557 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-18 11:27:37,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:27:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-18 11:27:37,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:37,563 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:37,569 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:37,569 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:37,569 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 1 times [2020-04-18 11:27:37,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:37,570 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [952369019] [2020-04-18 11:27:37,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:37,574 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:27:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:27:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:37,576 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:37,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:37,576 INFO L82 PathProgramCache]: Analyzing trace with hash -771554460, now seen corresponding path program 2 times [2020-04-18 11:27:37,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:37,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987800616] [2020-04-18 11:27:37,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:37,717 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 11:27:37,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987800616] [2020-04-18 11:27:37,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:37,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:37,718 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:37,719 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:37,723 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 11:27:37,723 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:37,741 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:27:37,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:37,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:37,742 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 11:27:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:37,762 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-04-18 11:27:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-04-18 11:27:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:37,763 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:37,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:37,763 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 3 times [2020-04-18 11:27:37,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:37,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687705007] [2020-04-18 11:27:37,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:37,866 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 11:27:37,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687705007] [2020-04-18 11:27:37,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:37,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:37,869 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:37,869 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:37,871 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:37,872 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:37,880 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:37,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:37,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:27:37,882 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2020-04-18 11:27:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:37,909 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-04-18 11:27:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-04-18 11:27:37,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:37,910 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [952369019] [2020-04-18 11:27:37,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:37,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:37,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [952369019] [2020-04-18 11:27:37,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:27:37,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:37,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:37,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:27:37,912 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-04-18 11:27:37,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:37,943 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-04-18 11:27:37,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:27:37,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:27:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:37,944 INFO L225 Difference]: With dead ends: 35 [2020-04-18 11:27:37,944 INFO L226 Difference]: Without dead ends: 28 [2020-04-18 11:27:37,946 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:27:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-04-18 11:27:37,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-04-18 11:27:37,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-04-18 11:27:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-04-18 11:27:37,950 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-04-18 11:27:37,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:37,950 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-04-18 11:27:37,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:27:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 11:27:37,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:37,951 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:37,951 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:37,952 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:37,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:37,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 1 times [2020-04-18 11:27:37,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:37,952 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [979689536] [2020-04-18 11:27:37,953 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:37,955 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 120 transitions. [2020-04-18 11:27:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 11:27:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:37,957 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:37,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:37,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1286203238, now seen corresponding path program 2 times [2020-04-18 11:27:37,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:37,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034026609] [2020-04-18 11:27:37,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:38,018 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 11:27:38,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034026609] [2020-04-18 11:27:38,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:38,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:38,020 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:38,021 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:38,024 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-04-18 11:27:38,025 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:38,038 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:27:38,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:38,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:38,039 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-04-18 11:27:38,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:38,068 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 11:27:38,068 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 11:27:38,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:38,070 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:38,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:38,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1081539068, now seen corresponding path program 3 times [2020-04-18 11:27:38,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:38,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427170353] [2020-04-18 11:27:38,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:38,125 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 11:27:38,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427170353] [2020-04-18 11:27:38,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:38,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:38,126 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:38,127 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:38,128 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 11:27:38,129 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:38,135 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:38,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:38,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:27:38,135 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 5 states. [2020-04-18 11:27:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:38,181 INFO L93 Difference]: Finished difference Result 74 states and 140 transitions. [2020-04-18 11:27:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 140 transitions. [2020-04-18 11:27:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:38,183 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:38,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 4 times [2020-04-18 11:27:38,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:38,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475494777] [2020-04-18 11:27:38,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:38,241 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 11:27:38,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475494777] [2020-04-18 11:27:38,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:38,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:38,242 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:38,244 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:38,246 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-04-18 11:27:38,246 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:38,263 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:38,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:38,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:27:38,264 INFO L87 Difference]: Start difference. First operand 74 states and 140 transitions. Second operand 4 states. [2020-04-18 11:27:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:38,289 INFO L93 Difference]: Finished difference Result 110 states and 192 transitions. [2020-04-18 11:27:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 192 transitions. [2020-04-18 11:27:38,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:38,293 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:27:38,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:38,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1252547174, now seen corresponding path program 5 times [2020-04-18 11:27:38,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:38,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571313691] [2020-04-18 11:27:38,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:38,347 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 11:27:38,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571313691] [2020-04-18 11:27:38,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:38,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:38,348 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:38,349 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:38,351 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:27:38,355 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:38,449 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:27:38,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:38,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:27:38,449 INFO L87 Difference]: Start difference. First operand 110 states and 192 transitions. Second operand 5 states. [2020-04-18 11:27:38,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:38,477 INFO L93 Difference]: Finished difference Result 162 states and 258 transitions. [2020-04-18 11:27:38,477 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 258 transitions. [2020-04-18 11:27:38,479 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:38,479 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [979689536] [2020-04-18 11:27:38,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:38,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:38,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [979689536] [2020-04-18 11:27:38,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:27:38,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:38,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:27:38,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:27:38,487 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 10 states. [2020-04-18 11:27:38,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:38,797 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:27:38,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:27:38,797 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-04-18 11:27:38,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:38,798 INFO L225 Difference]: With dead ends: 41 [2020-04-18 11:27:38,798 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:27:38,799 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:27:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:27:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:27:38,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:27:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:27:38,799 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 11:27:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:38,800 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:27:38,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:27:38,800 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:27:38,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:38,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:27:38 BasicIcfg [2020-04-18 11:27:38,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:27:38,807 INFO L168 Benchmark]: Toolchain (without parser) took 4869.18 ms. Allocated memory was 144.2 MB in the beginning and 250.6 MB in the end (delta: 106.4 MB). Free memory was 100.3 MB in the beginning and 182.0 MB in the end (delta: -81.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:38,808 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 11:27:38,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.92 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 98.5 MB in the beginning and 158.1 MB in the end (delta: -59.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:38,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.20 ms. Allocated memory is still 200.8 MB. Free memory was 158.1 MB in the beginning and 155.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:38,810 INFO L168 Benchmark]: Boogie Preprocessor took 25.28 ms. Allocated memory is still 200.8 MB. Free memory was 155.4 MB in the beginning and 154.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:38,811 INFO L168 Benchmark]: RCFGBuilder took 422.46 ms. Allocated memory is still 200.8 MB. Free memory was 154.0 MB in the beginning and 134.1 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:38,812 INFO L168 Benchmark]: TraceAbstraction took 3603.15 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 134.1 MB in the beginning and 182.0 MB in the end (delta: -47.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:38,816 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.92 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 98.5 MB in the beginning and 158.1 MB in the end (delta: -59.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.20 ms. Allocated memory is still 200.8 MB. Free memory was 158.1 MB in the beginning and 155.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.28 ms. Allocated memory is still 200.8 MB. Free memory was 155.4 MB in the beginning and 154.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.46 ms. Allocated memory is still 200.8 MB. Free memory was 154.0 MB in the beginning and 134.1 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3603.15 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 134.1 MB in the beginning and 182.0 MB in the end (delta: -47.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 357 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1294 CheckedPairsTotal, 49 TotalNumberOfCompositions - 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: 3.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 41 SDtfs, 62 SDslu, 91 SDs, 0 SdLazy, 106 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 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...