/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_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:27:36,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:27:36,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:27:36,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:27:36,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:27:36,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:27:36,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:27:36,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:27:36,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:27:36,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:27:36,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:27:36,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:27:36,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:27:36,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:27:36,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:27:36,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:27:36,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:27:36,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:27:36,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:27:36,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:27:36,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:27:36,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:27:36,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:27:36,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:27:36,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:27:36,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:27:36,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:27:36,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:27:36,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:27:36,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:27:36,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:27:36,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:27:36,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:27:36,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:27:36,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:27:36,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:27:36,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:27:36,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:27:36,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:27:36,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:27:36,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:27:36,218 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 11:27:36,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:27:36,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:27:36,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:27:36,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:27:36,245 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:27:36,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:27:36,245 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:27:36,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:27:36,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:27:36,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:27:36,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:27:36,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:27:36,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:27:36,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:27:36,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:27:36,248 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:27:36,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:27:36,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:27:36,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:27:36,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:27:36,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:27:36,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:27:36,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:27:36,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:27:36,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:27:36,251 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:27:36,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:27:36,253 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:27:36,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:27:36,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:27:36,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:27:36,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:27:36,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:27:36,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:27:36,546 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:27:36,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.opt.i [2020-04-18 11:27:36,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd378d05f/822a7cc104e8423f8bd6245cd2a4361b/FLAGb14ff0279 [2020-04-18 11:27:37,206 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:27:37,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.opt.i [2020-04-18 11:27:37,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd378d05f/822a7cc104e8423f8bd6245cd2a4361b/FLAGb14ff0279 [2020-04-18 11:27:37,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd378d05f/822a7cc104e8423f8bd6245cd2a4361b [2020-04-18 11:27:37,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:27:37,560 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:27:37,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:37,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:27:37,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:27:37,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:37" (1/1) ... [2020-04-18 11:27:37,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@136170c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:37, skipping insertion in model container [2020-04-18 11:27:37,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:27:37" (1/1) ... [2020-04-18 11:27:37,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:27:37,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:27:38,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:38,136 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:27:38,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:27:38,281 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:27:38,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38 WrapperNode [2020-04-18 11:27:38,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:27:38,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:38,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:27:38,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:27:38,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (1/1) ... [2020-04-18 11:27:38,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (1/1) ... [2020-04-18 11:27:38,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:27:38,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:27:38,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:27:38,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:27:38,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (1/1) ... [2020-04-18 11:27:38,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (1/1) ... [2020-04-18 11:27:38,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (1/1) ... [2020-04-18 11:27:38,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (1/1) ... [2020-04-18 11:27:38,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (1/1) ... [2020-04-18 11:27:38,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (1/1) ... [2020-04-18 11:27:38,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (1/1) ... [2020-04-18 11:27:38,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:27:38,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:27:38,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:27:38,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:27:38,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (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 11:27:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:27:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:27:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:27:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:27:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:27:38,434 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:27:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:27:38,434 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:27:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:27:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:27:38,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:27:38,437 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 11:27:38,783 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:27:38,783 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:27:38,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:38 BoogieIcfgContainer [2020-04-18 11:27:38,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:27:38,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:27:38,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:27:38,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:27:38,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:27:37" (1/3) ... [2020-04-18 11:27:38,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f93714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:38, skipping insertion in model container [2020-04-18 11:27:38,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:27:38" (2/3) ... [2020-04-18 11:27:38,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f93714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:27:38, skipping insertion in model container [2020-04-18 11:27:38,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:27:38" (3/3) ... [2020-04-18 11:27:38,795 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_tso.opt.i [2020-04-18 11:27:38,803 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:27:38,803 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:27:38,809 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:27:38,810 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:27:38,833 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,834 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,834 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,834 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,835 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,835 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,835 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,836 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,836 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,836 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,837 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,837 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,841 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,841 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,841 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,842 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,846 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,846 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,847 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,847 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:27:38,860 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 11:27:38,879 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:27:38,879 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:27:38,879 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:27:38,880 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:27:38,880 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:27:38,880 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:27:38,880 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:27:38,880 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:27:38,893 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-04-18 11:27:38,895 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 11:27:38,936 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 11:27:38,936 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:38,941 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 11:27:38,943 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 11:27:38,962 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 11:27:38,962 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:27:38,963 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 11:27:38,965 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 11:27:38,966 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:27:40,226 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 11:27:40,574 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-04-18 11:27:40,619 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1294 [2020-04-18 11:27:40,619 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-04-18 11:27:40,626 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 11:27:40,642 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 11:27:40,644 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 11:27:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:27:40,652 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:40,653 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 11:27:40,654 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:40,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:40,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 1 times [2020-04-18 11:27:40,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:40,665 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1584966418] [2020-04-18 11:27:40,679 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:40,691 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:27:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 11:27:40,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:27:40,693 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:40,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:40,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 2 times [2020-04-18 11:27:40,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:40,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820696339] [2020-04-18 11:27:40,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:40,960 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 11:27:40,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820696339] [2020-04-18 11:27:40,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:40,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:27:40,964 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:40,965 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:40,966 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:27:40,966 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:40,981 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:40,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:40,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:40,988 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2020-04-18 11:27:41,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:41,005 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 11:27:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 11:27:41,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:41,006 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1584966418] [2020-04-18 11:27:41,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:41,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:27:41,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1584966418] [2020-04-18 11:27:41,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:27:41,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:41,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:41,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:27:41,014 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-04-18 11:27:41,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:41,052 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-04-18 11:27:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:27:41,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-04-18 11:27:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:41,063 INFO L225 Difference]: With dead ends: 63 [2020-04-18 11:27:41,063 INFO L226 Difference]: Without dead ends: 40 [2020-04-18 11:27:41,065 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 11:27:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-18 11:27:41,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-18 11:27:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-18 11:27:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-18 11:27:41,110 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2020-04-18 11:27:41,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:41,111 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-18 11:27:41,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:27:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-18 11:27:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:41,112 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:41,113 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:41,114 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:41,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:41,115 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 1 times [2020-04-18 11:27:41,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:41,116 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [211695610] [2020-04-18 11:27:41,117 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:41,121 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 11:27:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:27:41,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:41,122 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:41,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:41,123 INFO L82 PathProgramCache]: Analyzing trace with hash -771554460, now seen corresponding path program 2 times [2020-04-18 11:27:41,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:41,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017240774] [2020-04-18 11:27:41,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:41,228 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 11:27:41,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017240774] [2020-04-18 11:27:41,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:41,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:41,229 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:41,230 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:41,232 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 11:27:41,232 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:41,246 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:27:41,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:41,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:41,247 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 11:27:41,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:41,278 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-04-18 11:27:41,278 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-04-18 11:27:41,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:27:41,278 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 3 times [2020-04-18 11:27:41,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:41,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841416625] [2020-04-18 11:27:41,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:41,391 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 11:27:41,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841416625] [2020-04-18 11:27:41,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:41,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:41,392 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:41,393 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:41,394 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 11:27:41,395 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:41,425 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:41,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:41,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:27:41,426 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2020-04-18 11:27:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:41,451 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-04-18 11:27:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-04-18 11:27:41,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:41,452 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [211695610] [2020-04-18 11:27:41,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:41,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:41,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [211695610] [2020-04-18 11:27:41,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:27:41,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:41,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:41,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:27:41,455 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-04-18 11:27:41,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:41,492 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-04-18 11:27:41,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:27:41,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 11:27:41,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:41,494 INFO L225 Difference]: With dead ends: 35 [2020-04-18 11:27:41,494 INFO L226 Difference]: Without dead ends: 28 [2020-04-18 11:27:41,495 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 11:27:41,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-04-18 11:27:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-04-18 11:27:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-04-18 11:27:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-04-18 11:27:41,500 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-04-18 11:27:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:41,500 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-04-18 11:27:41,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:27:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 11:27:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:41,501 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:27:41,501 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:27:41,502 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:27:41,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:41,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 1 times [2020-04-18 11:27:41,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:27:41,503 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [99204843] [2020-04-18 11:27:41,503 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:41,505 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 120 transitions. [2020-04-18 11:27:41,506 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 11:27:41,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:41,508 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:27:41,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:41,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1286203238, now seen corresponding path program 2 times [2020-04-18 11:27:41,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:41,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013820117] [2020-04-18 11:27:41,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:41,580 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 11:27:41,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013820117] [2020-04-18 11:27:41,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:41,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:41,581 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:41,583 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:41,585 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 29 transitions. [2020-04-18 11:27:41,585 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:41,601 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:27:41,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:41,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:27:41,601 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-04-18 11:27:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:41,641 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 11:27:41,642 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 11:27:41,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:41,643 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:27:41,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:41,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1081539068, now seen corresponding path program 3 times [2020-04-18 11:27:41,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:41,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727397694] [2020-04-18 11:27:41,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:41,715 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 11:27:41,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727397694] [2020-04-18 11:27:41,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:41,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:27:41,716 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:41,717 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:41,719 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 11:27:41,719 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:41,724 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:27:41,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:41,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:27:41,725 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 5 states. [2020-04-18 11:27:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:41,773 INFO L93 Difference]: Finished difference Result 74 states and 140 transitions. [2020-04-18 11:27:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 140 transitions. [2020-04-18 11:27:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:41,774 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:27:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:41,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 4 times [2020-04-18 11:27:41,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:41,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445039345] [2020-04-18 11:27:41,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:41,806 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 11:27:41,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445039345] [2020-04-18 11:27:41,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:41,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:41,807 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:41,808 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:41,810 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-04-18 11:27:41,810 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:41,825 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:27:41,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:27:41,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:27:41,826 INFO L87 Difference]: Start difference. First operand 74 states and 140 transitions. Second operand 4 states. [2020-04-18 11:27:41,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:41,845 INFO L93 Difference]: Finished difference Result 110 states and 192 transitions. [2020-04-18 11:27:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 192 transitions. [2020-04-18 11:27:41,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:27:41,846 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:27:41,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:27:41,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1252547174, now seen corresponding path program 5 times [2020-04-18 11:27:41,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:27:41,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451516995] [2020-04-18 11:27:41,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:27:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:27:41,900 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 11:27:41,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451516995] [2020-04-18 11:27:41,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:27:41,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:27:41,902 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:27:41,903 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:27:41,905 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:27:41,906 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:27:42,001 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:27:42,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:27:42,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:27:42,004 INFO L87 Difference]: Start difference. First operand 110 states and 192 transitions. Second operand 5 states. [2020-04-18 11:27:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:42,028 INFO L93 Difference]: Finished difference Result 162 states and 258 transitions. [2020-04-18 11:27:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 258 transitions. [2020-04-18 11:27:42,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:42,030 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [99204843] [2020-04-18 11:27:42,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:27:42,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:27:42,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [99204843] [2020-04-18 11:27:42,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:27:42,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:27:42,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:27:42,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:27:42,033 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 10 states. [2020-04-18 11:27:42,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:27:42,321 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 11:27:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 11:27:42,322 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-04-18 11:27:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:27:42,322 INFO L225 Difference]: With dead ends: 41 [2020-04-18 11:27:42,323 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:27:42,324 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 11:27:42,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:27:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:27:42,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:27:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:27:42,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 11:27:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:27:42,325 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:27:42,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:27:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:27:42,325 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:27:42,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:27:42 BasicIcfg [2020-04-18 11:27:42,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:27:42,331 INFO L168 Benchmark]: Toolchain (without parser) took 4786.86 ms. Allocated memory was 145.2 MB in the beginning and 246.4 MB in the end (delta: 101.2 MB). Free memory was 101.4 MB in the beginning and 166.4 MB in the end (delta: -65.0 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:42,331 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 145.2 MB. Free memory is still 121.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 11:27:42,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.12 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 99.7 MB in the beginning and 159.2 MB in the end (delta: -59.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:42,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.15 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 157.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:42,333 INFO L168 Benchmark]: Boogie Preprocessor took 27.19 ms. Allocated memory is still 202.4 MB. Free memory was 157.3 MB in the beginning and 156.3 MB in the end (delta: 962.1 kB). Peak memory consumption was 962.1 kB. Max. memory is 7.1 GB. [2020-04-18 11:27:42,334 INFO L168 Benchmark]: RCFGBuilder took 422.32 ms. Allocated memory is still 202.4 MB. Free memory was 156.3 MB in the beginning and 135.7 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:42,335 INFO L168 Benchmark]: TraceAbstraction took 3539.90 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 135.7 MB in the beginning and 166.4 MB in the end (delta: -30.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:27:42,339 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 145.2 MB. Free memory is still 121.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 722.12 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 99.7 MB in the beginning and 159.2 MB in the end (delta: -59.5 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.15 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 157.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.19 ms. Allocated memory is still 202.4 MB. Free memory was 157.3 MB in the beginning and 156.3 MB in the end (delta: 962.1 kB). Peak memory consumption was 962.1 kB. Max. memory is 7.1 GB. * RCFGBuilder took 422.32 ms. Allocated memory is still 202.4 MB. Free memory was 156.3 MB in the beginning and 135.7 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3539.90 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 135.7 MB in the beginning and 166.4 MB in the end (delta: -30.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 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: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, 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...