/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:11:45,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:11:45,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:11:45,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:11:45,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:11:45,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:11:45,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:11:45,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:11:45,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:11:45,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:11:45,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:11:45,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:11:45,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:11:45,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:11:45,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:11:45,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:11:45,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:11:45,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:11:45,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:11:45,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:11:45,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:11:45,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:11:45,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:11:45,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:11:45,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:11:45,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:11:45,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:11:45,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:11:45,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:11:45,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:11:45,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:11:45,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:11:45,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:11:45,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:11:45,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:11:45,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:11:45,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:11:45,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:11:45,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:11:45,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:11:45,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:11:45,913 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-VariableLbe-McrStrategy.epf [2020-04-18 15:11:45,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:11:45,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:11:45,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:11:45,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:11:45,932 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:11:45,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:11:45,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:11:45,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:11:45,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:11:45,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:11:45,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:11:45,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:11:45,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:11:45,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:11:45,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:11:45,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:11:45,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:11:45,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:11:45,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:11:45,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:11:45,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:11:45,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:11:45,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:11:45,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:11:45,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:11:45,936 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:11:45,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:11:45,937 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:11:45,937 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:11:45,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:11:45,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:11:46,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:11:46,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:11:46,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:11:46,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:11:46,255 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:11:46,256 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-04-18 15:11:46,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e9ad2c0/afd45f7daf364db5a1387ebcba778a66/FLAGa090ee813 [2020-04-18 15:11:46,937 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:11:46,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-04-18 15:11:46,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e9ad2c0/afd45f7daf364db5a1387ebcba778a66/FLAGa090ee813 [2020-04-18 15:11:47,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e9ad2c0/afd45f7daf364db5a1387ebcba778a66 [2020-04-18 15:11:47,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:11:47,209 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:11:47,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:11:47,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:11:47,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:11:47,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5162adf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47, skipping insertion in model container [2020-04-18 15:11:47,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:11:47,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:11:47,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:11:47,743 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:11:47,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:11:47,884 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:11:47,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47 WrapperNode [2020-04-18 15:11:47,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:11:47,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:11:47,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:11:47,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:11:47,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:11:47,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:11:47,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:11:47,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:11:47,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (1/1) ... [2020-04-18 15:11:47,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:11:47,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:11:47,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:11:47,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:11:47,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (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 15:11:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:11:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:11:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:11:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:11:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:11:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:11:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:11:48,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:11:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:11:48,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:11:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:11:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:11:48,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:11:48,042 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 15:11:48,423 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:11:48,423 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:11:48,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:11:48 BoogieIcfgContainer [2020-04-18 15:11:48,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:11:48,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:11:48,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:11:48,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:11:48,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:11:47" (1/3) ... [2020-04-18 15:11:48,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d81644e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:11:48, skipping insertion in model container [2020-04-18 15:11:48,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:11:47" (2/3) ... [2020-04-18 15:11:48,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d81644e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:11:48, skipping insertion in model container [2020-04-18 15:11:48,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:11:48" (3/3) ... [2020-04-18 15:11:48,437 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-04-18 15:11:48,448 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:11:48,449 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:11:48,457 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:11:48,458 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:11:48,492 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,493 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,495 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,496 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,496 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,497 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,497 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,497 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,498 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,498 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,498 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,499 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,500 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,500 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,500 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,500 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,502 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,502 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,509 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,510 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,510 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,510 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,519 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,520 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,520 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,520 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,523 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,523 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,523 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,524 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:11:48,547 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:11:48,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:11:48,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:11:48,565 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:11:48,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:11:48,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:11:48,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:11:48,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:11:48,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:11:48,582 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:11:48,584 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:11:48,639 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:11:48,639 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:11:48,644 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:11:48,647 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:11:48,668 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:11:48,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:11:48,669 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:11:48,671 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:11:48,672 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:11:50,246 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-04-18 15:11:50,441 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-04-18 15:11:50,442 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 15:11:50,446 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 15:11:50,477 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:11:50,480 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:11:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:11:50,488 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:11:50,489 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:11:50,489 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:11:50,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:50,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-04-18 15:11:50,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:11:50,500 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1735742408] [2020-04-18 15:11:50,513 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:50,526 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:11:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:11:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:11:50,528 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:11:50,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:50,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 2 times [2020-04-18 15:11:50,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:50,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739930202] [2020-04-18 15:11:50,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:50,748 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 15:11:50,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739930202] [2020-04-18 15:11:50,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:50,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:11:50,752 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:50,753 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:50,756 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:11:50,756 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:50,764 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:11:50,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:50,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:11:50,771 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:11:50,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:50,775 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:11:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:11:50,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:11:50,776 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1735742408] [2020-04-18 15:11:50,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:11:50,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:11:50,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1735742408] [2020-04-18 15:11:50,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:11:50,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:11:50,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:50,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:11:50,785 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:11:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:50,822 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 15:11:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:11:50,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:11:50,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:11:50,840 INFO L225 Difference]: With dead ends: 282 [2020-04-18 15:11:50,841 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 15:11:50,842 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:11:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 15:11:50,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 15:11:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 15:11:50,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 15:11:50,910 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 15:11:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:11:50,911 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 15:11:50,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:11:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 15:11:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:11:50,913 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:11:50,913 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:11:50,913 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:11:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:50,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1311571333, now seen corresponding path program 1 times [2020-04-18 15:11:50,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:11:50,914 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [864201698] [2020-04-18 15:11:50,915 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:50,916 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:11:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:11:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:11:50,917 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:11:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:50,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1311572743, now seen corresponding path program 2 times [2020-04-18 15:11:50,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:50,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940940712] [2020-04-18 15:11:50,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:51,010 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 15:11:51,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940940712] [2020-04-18 15:11:51,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:51,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:51,012 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:51,013 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,014 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:11:51,014 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:51,042 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:11:51,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:51,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:11:51,043 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 15:11:51,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,050 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:11:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:11:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:11:51,051 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:11:51,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1311571333, now seen corresponding path program 3 times [2020-04-18 15:11:51,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:51,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665071052] [2020-04-18 15:11:51,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:51,140 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 15:11:51,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665071052] [2020-04-18 15:11:51,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:51,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:11:51,141 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:51,142 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,143 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:11:51,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:51,149 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:11:51,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:51,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:11:51,150 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-04-18 15:11:51,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,151 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:11:51,151 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:11:51,151 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:11:51,151 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [864201698] [2020-04-18 15:11:51,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:11:51,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:11:51,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [864201698] [2020-04-18 15:11:51,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:11:51,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:11:51,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:11:51,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:11:51,154 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 15:11:51,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,184 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-04-18 15:11:51,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:11:51,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:11:51,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:11:51,190 INFO L225 Difference]: With dead ends: 214 [2020-04-18 15:11:51,191 INFO L226 Difference]: Without dead ends: 214 [2020-04-18 15:11:51,192 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 15:11:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-04-18 15:11:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-04-18 15:11:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-04-18 15:11:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-04-18 15:11:51,213 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-04-18 15:11:51,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:11:51,214 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-04-18 15:11:51,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:11:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-04-18 15:11:51,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:11:51,215 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:11:51,215 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:11:51,216 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:11:51,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2047253273, now seen corresponding path program 1 times [2020-04-18 15:11:51,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:11:51,217 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1235676810] [2020-04-18 15:11:51,217 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,218 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 34 transitions. [2020-04-18 15:11:51,218 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 15:11:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:11:51,219 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:11:51,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,219 INFO L82 PathProgramCache]: Analyzing trace with hash 2047254683, now seen corresponding path program 2 times [2020-04-18 15:11:51,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:51,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187922565] [2020-04-18 15:11:51,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:51,270 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 15:11:51,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187922565] [2020-04-18 15:11:51,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:51,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:51,273 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:51,274 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,276 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 15:11:51,276 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:51,283 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:11:51,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:51,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:11:51,284 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-04-18 15:11:51,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,289 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2020-04-18 15:11:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2020-04-18 15:11:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:11:51,290 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:11:51,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2047253273, now seen corresponding path program 3 times [2020-04-18 15:11:51,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:51,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951116859] [2020-04-18 15:11:51,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:51,335 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 15:11:51,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951116859] [2020-04-18 15:11:51,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:51,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:51,336 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:51,337 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,339 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-04-18 15:11:51,339 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:51,352 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:11:51,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:11:51,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:11:51,353 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand 4 states. [2020-04-18 15:11:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,362 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2020-04-18 15:11:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2020-04-18 15:11:51,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:11:51,363 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1235676810] [2020-04-18 15:11:51,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:11:51,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:11:51,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1235676810] [2020-04-18 15:11:51,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:11:51,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:11:51,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:11:51,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:11:51,365 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 5 states. [2020-04-18 15:11:51,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,400 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2020-04-18 15:11:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:11:51,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 15:11:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:11:51,402 INFO L225 Difference]: With dead ends: 240 [2020-04-18 15:11:51,402 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 15:11:51,403 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:11:51,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 15:11:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 15:11:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 15:11:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 15:11:51,414 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 10 [2020-04-18 15:11:51,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:11:51,414 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 15:11:51,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:11:51,415 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 15:11:51,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:11:51,416 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:11:51,416 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:11:51,416 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:11:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,417 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-04-18 15:11:51,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:11:51,417 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [41889253] [2020-04-18 15:11:51,418 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,419 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 118 transitions. [2020-04-18 15:11:51,420 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 15:11:51,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:11:51,421 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:11:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash 315673915, now seen corresponding path program 2 times [2020-04-18 15:11:51,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:51,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163830905] [2020-04-18 15:11:51,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:51,473 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 15:11:51,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163830905] [2020-04-18 15:11:51,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:51,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:51,475 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:51,478 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,482 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 60 transitions. [2020-04-18 15:11:51,482 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:51,490 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:11:51,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:51,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:11:51,491 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-04-18 15:11:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,495 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 15:11:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 15:11:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:11:51,496 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:11:51,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,497 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 3 times [2020-04-18 15:11:51,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:51,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265548412] [2020-04-18 15:11:51,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:51,625 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 15:11:51,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265548412] [2020-04-18 15:11:51,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:51,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:51,626 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:51,628 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,632 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-04-18 15:11:51,633 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:51,644 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:11:51,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:11:51,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:11:51,646 INFO L87 Difference]: Start difference. First operand 60 states and 125 transitions. Second operand 4 states. [2020-04-18 15:11:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,657 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 15:11:51,657 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 15:11:51,657 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:11:51,658 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [41889253] [2020-04-18 15:11:51,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:11:51,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:11:51,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [41889253] [2020-04-18 15:11:51,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:11:51,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:11:51,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:11:51,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:11:51,659 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-04-18 15:11:51,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,734 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 15:11:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 15:11:51,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 15:11:51,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:11:51,735 INFO L225 Difference]: With dead ends: 164 [2020-04-18 15:11:51,736 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 15:11:51,736 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:11:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 15:11:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 15:11:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 15:11:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 15:11:51,744 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 15:11:51,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:11:51,745 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 15:11:51,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:11:51,745 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 15:11:51,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:11:51,746 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:11:51,746 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:11:51,746 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:11:51,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,746 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 1 times [2020-04-18 15:11:51,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:11:51,747 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [723333845] [2020-04-18 15:11:51,747 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,750 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 160 transitions. [2020-04-18 15:11:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 15:11:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:11:51,752 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:11:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1195942067, now seen corresponding path program 2 times [2020-04-18 15:11:51,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:51,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403865171] [2020-04-18 15:11:51,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:51,781 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 15:11:51,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403865171] [2020-04-18 15:11:51,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:51,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:51,782 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:51,783 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,790 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 67 transitions. [2020-04-18 15:11:51,790 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:51,796 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:11:51,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:51,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:11:51,796 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-04-18 15:11:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,800 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 15:11:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 15:11:51,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:11:51,801 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:11:51,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1195940657, now seen corresponding path program 3 times [2020-04-18 15:11:51,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:51,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154086745] [2020-04-18 15:11:51,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:51,890 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 15:11:51,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154086745] [2020-04-18 15:11:51,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:51,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:51,892 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:51,893 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:51,901 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 73 transitions. [2020-04-18 15:11:51,901 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:51,916 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:11:51,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:11:51,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:11:51,916 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 4 states. [2020-04-18 15:11:51,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:51,934 INFO L93 Difference]: Finished difference Result 88 states and 183 transitions. [2020-04-18 15:11:51,935 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 183 transitions. [2020-04-18 15:11:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:11:51,935 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:11:51,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:51,936 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 4 times [2020-04-18 15:11:51,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:51,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205012796] [2020-04-18 15:11:51,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:52,058 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 15:11:52,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205012796] [2020-04-18 15:11:52,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:52,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:11:52,059 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:52,060 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:52,065 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-04-18 15:11:52,065 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:52,144 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:11:52,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:11:52,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:11:52,144 INFO L87 Difference]: Start difference. First operand 88 states and 183 transitions. Second operand 6 states. [2020-04-18 15:11:52,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:52,167 INFO L93 Difference]: Finished difference Result 88 states and 183 transitions. [2020-04-18 15:11:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 183 transitions. [2020-04-18 15:11:52,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:11:52,168 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [723333845] [2020-04-18 15:11:52,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:11:52,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:11:52,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [723333845] [2020-04-18 15:11:52,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:11:52,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:11:52,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:11:52,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:11:52,170 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 7 states. [2020-04-18 15:11:52,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:52,284 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 15:11:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:11:52,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 15:11:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:11:52,286 INFO L225 Difference]: With dead ends: 122 [2020-04-18 15:11:52,286 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 15:11:52,287 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:11:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 15:11:52,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 15:11:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 15:11:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 15:11:52,298 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 15:11:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:11:52,298 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 15:11:52,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:11:52,298 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 15:11:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:11:52,304 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:11:52,304 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:11:52,305 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:11:52,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:52,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-04-18 15:11:52,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:11:52,305 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1368492564] [2020-04-18 15:11:52,306 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:52,307 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 15:11:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 15:11:52,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:11:52,308 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:11:52,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:52,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1584764212, now seen corresponding path program 2 times [2020-04-18 15:11:52,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:52,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760003852] [2020-04-18 15:11:52,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:52,354 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 15:11:52,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760003852] [2020-04-18 15:11:52,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:52,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:52,356 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:52,357 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:52,359 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 15:11:52,359 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:52,363 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:11:52,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:52,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:11:52,365 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 15:11:52,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:52,369 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 15:11:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 15:11:52,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:11:52,370 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:11:52,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:52,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1583351992, now seen corresponding path program 3 times [2020-04-18 15:11:52,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:52,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704941771] [2020-04-18 15:11:52,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:52,420 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 15:11:52,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704941771] [2020-04-18 15:11:52,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:52,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:52,422 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:52,423 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:52,425 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 15:11:52,425 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:52,440 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:11:52,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:52,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:11:52,441 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 3 states. [2020-04-18 15:11:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:52,446 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 15:11:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 15:11:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:11:52,447 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:11:52,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:52,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1583409202, now seen corresponding path program 4 times [2020-04-18 15:11:52,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:52,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344837172] [2020-04-18 15:11:52,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:52,477 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 15:11:52,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344837172] [2020-04-18 15:11:52,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:52,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:52,478 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:52,479 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:52,481 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 15:11:52,481 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:52,499 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:11:52,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:52,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:11:52,500 INFO L87 Difference]: Start difference. First operand 80 states and 149 transitions. Second operand 3 states. [2020-04-18 15:11:52,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:52,505 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 15:11:52,505 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 15:11:52,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:11:52,506 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1368492564] [2020-04-18 15:11:52,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:11:52,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:11:52,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1368492564] [2020-04-18 15:11:52,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:11:52,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:11:52,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:11:52,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:11:52,507 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 5 states. [2020-04-18 15:11:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:52,531 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 15:11:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:11:52,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 15:11:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:11:52,533 INFO L225 Difference]: With dead ends: 115 [2020-04-18 15:11:52,533 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 15:11:52,533 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:11:52,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 15:11:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 15:11:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 15:11:52,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 15:11:52,537 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 15:11:52,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:11:52,538 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 15:11:52,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:11:52,538 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 15:11:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:11:52,539 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:11:52,539 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:11:52,539 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:11:52,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:52,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-04-18 15:11:52,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:11:52,540 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [209736844] [2020-04-18 15:11:52,541 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:52,543 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 352 transitions. [2020-04-18 15:11:52,546 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 15:11:52,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:11:52,547 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:11:52,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:52,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2064095689, now seen corresponding path program 2 times [2020-04-18 15:11:52,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:52,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28407073] [2020-04-18 15:11:52,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:52,577 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 15:11:52,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28407073] [2020-04-18 15:11:52,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:52,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:52,580 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:52,581 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:52,585 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 75 transitions. [2020-04-18 15:11:52,586 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:52,590 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:11:52,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:52,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:11:52,591 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-04-18 15:11:52,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:52,595 INFO L93 Difference]: Finished difference Result 154 states and 376 transitions. [2020-04-18 15:11:52,595 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 15:11:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:11:52,596 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:11:52,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:52,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2064097099, now seen corresponding path program 3 times [2020-04-18 15:11:52,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:52,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444014297] [2020-04-18 15:11:52,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:52,657 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 15:11:52,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444014297] [2020-04-18 15:11:52,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:52,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:11:52,658 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:52,659 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:52,663 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 75 transitions. [2020-04-18 15:11:52,663 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:52,700 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:11:52,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:11:52,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:11:52,701 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 6 states. [2020-04-18 15:11:52,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:52,778 INFO L93 Difference]: Finished difference Result 159 states and 380 transitions. [2020-04-18 15:11:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 380 transitions. [2020-04-18 15:11:52,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:11:52,779 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:11:52,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:52,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 4 times [2020-04-18 15:11:52,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:52,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519019115] [2020-04-18 15:11:52,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:52,862 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 15:11:52,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519019115] [2020-04-18 15:11:52,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:52,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:11:52,866 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:52,866 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:52,871 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-04-18 15:11:52,871 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:52,938 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:11:52,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:11:52,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:11:52,939 INFO L87 Difference]: Start difference. First operand 159 states and 380 transitions. Second operand 8 states. [2020-04-18 15:11:52,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:52,997 INFO L93 Difference]: Finished difference Result 159 states and 380 transitions. [2020-04-18 15:11:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 380 transitions. [2020-04-18 15:11:52,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:11:52,998 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [209736844] [2020-04-18 15:11:52,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:11:52,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:11:52,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [209736844] [2020-04-18 15:11:52,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:11:52,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:11:52,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:11:53,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:11:53,000 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 9 states. [2020-04-18 15:11:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:53,101 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-04-18 15:11:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:11:53,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-04-18 15:11:53,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:11:53,102 INFO L225 Difference]: With dead ends: 92 [2020-04-18 15:11:53,102 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 15:11:53,103 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:11:53,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 15:11:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 15:11:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 15:11:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 15:11:53,105 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 15:11:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:11:53,106 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 15:11:53,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:11:53,106 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 15:11:53,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:11:53,106 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:11:53,106 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:11:53,107 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:11:53,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:53,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-04-18 15:11:53,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:11:53,110 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [586218411] [2020-04-18 15:11:53,111 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:53,117 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:11:53,120 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:11:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:11:53,121 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:11:53,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:53,122 INFO L82 PathProgramCache]: Analyzing trace with hash 678938788, now seen corresponding path program 2 times [2020-04-18 15:11:53,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:53,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672281063] [2020-04-18 15:11:53,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:53,170 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 15:11:53,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672281063] [2020-04-18 15:11:53,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:53,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:53,171 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:53,172 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:53,177 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 79 transitions. [2020-04-18 15:11:53,177 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:53,182 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:11:53,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:53,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:11:53,183 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:11:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:53,187 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 15:11:53,187 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 15:11:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:11:53,188 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:11:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash 677526568, now seen corresponding path program 3 times [2020-04-18 15:11:53,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:53,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125875344] [2020-04-18 15:11:53,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:53,210 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 15:11:53,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125875344] [2020-04-18 15:11:53,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:53,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:53,211 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:53,212 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:53,216 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 85 transitions. [2020-04-18 15:11:53,217 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:53,224 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:11:53,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:11:53,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:11:53,225 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 3 states. [2020-04-18 15:11:53,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:53,232 INFO L93 Difference]: Finished difference Result 410 states and 1056 transitions. [2020-04-18 15:11:53,232 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1056 transitions. [2020-04-18 15:11:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:11:53,234 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:11:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:53,234 INFO L82 PathProgramCache]: Analyzing trace with hash 677583778, now seen corresponding path program 4 times [2020-04-18 15:11:53,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:53,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931540688] [2020-04-18 15:11:53,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:53,298 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 15:11:53,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931540688] [2020-04-18 15:11:53,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:53,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:11:53,300 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:53,302 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:53,308 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 79 transitions. [2020-04-18 15:11:53,308 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:53,359 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:11:53,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:11:53,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:11:53,361 INFO L87 Difference]: Start difference. First operand 410 states and 1056 transitions. Second operand 6 states. [2020-04-18 15:11:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:53,507 INFO L93 Difference]: Finished difference Result 449 states and 1106 transitions. [2020-04-18 15:11:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1106 transitions. [2020-04-18 15:11:53,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:11:53,510 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:11:53,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:53,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1776185460, now seen corresponding path program 5 times [2020-04-18 15:11:53,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:53,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153822529] [2020-04-18 15:11:53,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:53,625 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 15:11:53,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153822529] [2020-04-18 15:11:53,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:53,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:11:53,626 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:53,629 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:53,635 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 75 transitions. [2020-04-18 15:11:53,635 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:53,703 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:11:53,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:11:53,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:11:53,704 INFO L87 Difference]: Start difference. First operand 449 states and 1106 transitions. Second operand 8 states. [2020-04-18 15:11:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:53,834 INFO L93 Difference]: Finished difference Result 453 states and 1108 transitions. [2020-04-18 15:11:53,834 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 1108 transitions. [2020-04-18 15:11:53,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:11:53,836 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:11:53,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:53,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 6 times [2020-04-18 15:11:53,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:53,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147197051] [2020-04-18 15:11:53,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:53,878 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 15:11:53,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147197051] [2020-04-18 15:11:53,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:53,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:11:53,879 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:53,880 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:53,889 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 108 transitions. [2020-04-18 15:11:53,889 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:53,948 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:11:53,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:11:53,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:11:53,949 INFO L87 Difference]: Start difference. First operand 453 states and 1108 transitions. Second operand 5 states. [2020-04-18 15:11:53,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:53,981 INFO L93 Difference]: Finished difference Result 718 states and 1635 transitions. [2020-04-18 15:11:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1635 transitions. [2020-04-18 15:11:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:11:53,985 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:11:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:11:53,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1907140316, now seen corresponding path program 7 times [2020-04-18 15:11:53,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:11:53,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813458111] [2020-04-18 15:11:53,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:11:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:11:54,021 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 15:11:54,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813458111] [2020-04-18 15:11:54,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:11:54,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:11:54,022 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:11:54,024 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:11:54,029 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 76 transitions. [2020-04-18 15:11:54,029 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:11:54,059 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:11:54,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:11:54,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:11:54,059 INFO L87 Difference]: Start difference. First operand 718 states and 1635 transitions. Second operand 4 states. [2020-04-18 15:11:54,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:54,084 INFO L93 Difference]: Finished difference Result 962 states and 2125 transitions. [2020-04-18 15:11:54,084 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2125 transitions. [2020-04-18 15:11:54,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:11:54,089 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [586218411] [2020-04-18 15:11:54,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:11:54,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:11:54,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [586218411] [2020-04-18 15:11:54,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 15:11:54,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:11:54,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 15:11:54,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:11:54,091 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 15 states. [2020-04-18 15:11:54,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:11:54,345 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 15:11:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 15:11:54,345 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 17 [2020-04-18 15:11:54,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:11:54,346 INFO L225 Difference]: With dead ends: 35 [2020-04-18 15:11:54,346 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:11:54,347 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 15:11:54,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:11:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:11:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:11:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:11:54,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:11:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:11:54,348 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:11:54,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 15:11:54,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:11:54,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:11:54,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:11:54 BasicIcfg [2020-04-18 15:11:54,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:11:54,354 INFO L168 Benchmark]: Toolchain (without parser) took 7166.55 ms. Allocated memory was 146.8 MB in the beginning and 276.3 MB in the end (delta: 129.5 MB). Free memory was 103.0 MB in the beginning and 114.1 MB in the end (delta: -11.1 MB). Peak memory consumption was 118.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:11:54,355 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 15:11:54,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.71 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 160.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:11:54,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.91 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:11:54,357 INFO L168 Benchmark]: Boogie Preprocessor took 28.68 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 156.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:11:54,357 INFO L168 Benchmark]: RCFGBuilder took 463.26 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 134.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:11:54,358 INFO L168 Benchmark]: TraceAbstraction took 5923.22 ms. Allocated memory was 203.9 MB in the beginning and 276.3 MB in the end (delta: 72.4 MB). Free memory was 134.7 MB in the beginning and 114.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:11:54,361 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 675.71 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 160.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.91 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.68 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 156.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.26 ms. Allocated memory is still 203.9 MB. Free memory was 156.9 MB in the beginning and 134.7 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5923.22 ms. Allocated memory was 203.9 MB in the beginning and 276.3 MB in the end (delta: 72.4 MB). Free memory was 134.7 MB in the beginning and 114.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 650 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 58 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 140 SDtfs, 245 SDslu, 298 SDs, 0 SdLazy, 230 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 300 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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...