/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 16:10:32,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 16:10:32,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 16:10:32,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 16:10:32,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 16:10:32,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 16:10:32,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 16:10:33,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 16:10:33,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 16:10:33,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 16:10:33,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 16:10:33,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 16:10:33,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 16:10:33,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 16:10:33,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 16:10:33,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 16:10:33,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 16:10:33,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 16:10:33,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 16:10:33,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 16:10:33,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 16:10:33,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 16:10:33,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 16:10:33,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 16:10:33,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 16:10:33,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 16:10:33,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 16:10:33,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 16:10:33,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 16:10:33,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 16:10:33,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 16:10:33,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 16:10:33,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 16:10:33,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 16:10:33,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 16:10:33,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 16:10:33,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 16:10:33,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 16:10:33,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 16:10:33,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 16:10:33,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 16:10:33,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 16:10:33,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 16:10:33,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 16:10:33,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 16:10:33,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 16:10:33,073 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 16:10:33,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 16:10:33,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 16:10:33,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 16:10:33,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 16:10:33,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 16:10:33,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 16:10:33,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 16:10:33,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 16:10:33,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 16:10:33,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 16:10:33,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 16:10:33,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 16:10:33,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 16:10:33,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 16:10:33,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 16:10:33,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 16:10:33,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 16:10:33,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 16:10:33,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 16:10:33,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 16:10:33,083 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 16:10:33,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 16:10:33,083 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 16:10:33,083 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 16:10:33,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 16:10:33,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 16:10:33,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 16:10:33,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 16:10:33,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 16:10:33,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 16:10:33,408 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 16:10:33,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-04-18 16:10:33,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45878af7/e21aeaded3424d1aa2552edaa62b8309/FLAG653c4e647 [2020-04-18 16:10:34,015 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 16:10:34,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-04-18 16:10:34,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45878af7/e21aeaded3424d1aa2552edaa62b8309/FLAG653c4e647 [2020-04-18 16:10:34,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45878af7/e21aeaded3424d1aa2552edaa62b8309 [2020-04-18 16:10:34,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 16:10:34,402 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 16:10:34,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 16:10:34,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 16:10:34,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 16:10:34,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:10:34" (1/1) ... [2020-04-18 16:10:34,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f437de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:34, skipping insertion in model container [2020-04-18 16:10:34,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:10:34" (1/1) ... [2020-04-18 16:10:34,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 16:10:34,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 16:10:34,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:10:34,935 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 16:10:35,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:10:35,073 INFO L208 MainTranslator]: Completed translation [2020-04-18 16:10:35,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35 WrapperNode [2020-04-18 16:10:35,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 16:10:35,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 16:10:35,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 16:10:35,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 16:10:35,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (1/1) ... [2020-04-18 16:10:35,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (1/1) ... [2020-04-18 16:10:35,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 16:10:35,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 16:10:35,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 16:10:35,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 16:10:35,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (1/1) ... [2020-04-18 16:10:35,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (1/1) ... [2020-04-18 16:10:35,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (1/1) ... [2020-04-18 16:10:35,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (1/1) ... [2020-04-18 16:10:35,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (1/1) ... [2020-04-18 16:10:35,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (1/1) ... [2020-04-18 16:10:35,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (1/1) ... [2020-04-18 16:10:35,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 16:10:35,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 16:10:35,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 16:10:35,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 16:10:35,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (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 16:10:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 16:10:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 16:10:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-04-18 16:10:35,215 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-04-18 16:10:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 16:10:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 16:10:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 16:10:35,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 16:10:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-04-18 16:10:35,216 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-04-18 16:10:35,218 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 16:10:35,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 16:10:35,764 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-18 16:10:35,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:10:35 BoogieIcfgContainer [2020-04-18 16:10:35,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 16:10:35,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 16:10:35,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 16:10:35,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 16:10:35,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:10:34" (1/3) ... [2020-04-18 16:10:35,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2435aaac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:10:35, skipping insertion in model container [2020-04-18 16:10:35,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:35" (2/3) ... [2020-04-18 16:10:35,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2435aaac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:10:35, skipping insertion in model container [2020-04-18 16:10:35,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:10:35" (3/3) ... [2020-04-18 16:10:35,785 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2020-04-18 16:10:35,795 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 16:10:35,795 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 16:10:35,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 16:10:35,805 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 16:10:35,839 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,839 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,839 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,841 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,841 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,841 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,842 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,842 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,842 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,843 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,843 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,844 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,844 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,845 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,845 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,845 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,845 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,845 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,846 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,846 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,846 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,847 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,847 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,848 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,848 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,848 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,848 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,849 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,849 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,850 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,850 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,850 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,850 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,850 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,851 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,851 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,851 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,851 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,859 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,860 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,860 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,861 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,862 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,862 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,864 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,865 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,865 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,865 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,865 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,865 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,866 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,867 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,868 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,868 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,868 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,868 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,868 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,874 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,874 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,874 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,875 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,875 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,875 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,875 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:35,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 16:10:35,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 16:10:35,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 16:10:35,929 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 16:10:35,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 16:10:35,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 16:10:35,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 16:10:35,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 16:10:35,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 16:10:35,946 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 99 places, 100 transitions, 268 flow [2020-04-18 16:10:39,405 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 34510 states. [2020-04-18 16:10:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 34510 states. [2020-04-18 16:10:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:10:39,418 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:10:39,420 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:10:39,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 16:10:39,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:39,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1170624771, now seen corresponding path program 1 times [2020-04-18 16:10:39,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:10:39,435 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1359359336] [2020-04-18 16:10:39,451 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:39,466 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 16:10:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 16:10:39,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:10:39,472 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:10:39,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:39,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1170624771, now seen corresponding path program 2 times [2020-04-18 16:10:39,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:10:39,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824891650] [2020-04-18 16:10:39,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:10:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:10:39,720 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 16:10:39,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824891650] [2020-04-18 16:10:39,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:10:39,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:10:39,724 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:10:39,727 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:39,737 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 16:10:39,737 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:10:39,749 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:10:39,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:10:39,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:10:39,755 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-04-18 16:10:39,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:39,794 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-04-18 16:10:39,795 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2020-04-18 16:10:39,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:10:39,796 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1359359336] [2020-04-18 16:10:39,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:10:39,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 16:10:39,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1359359336] [2020-04-18 16:10:39,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 16:10:39,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:10:39,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:10:39,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 16:10:39,804 INFO L87 Difference]: Start difference. First operand 34510 states. Second operand 4 states. [2020-04-18 16:10:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:41,842 INFO L93 Difference]: Finished difference Result 74769 states and 285909 transitions. [2020-04-18 16:10:41,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 16:10:41,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-04-18 16:10:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:10:42,287 INFO L225 Difference]: With dead ends: 74769 [2020-04-18 16:10:42,287 INFO L226 Difference]: Without dead ends: 56364 [2020-04-18 16:10:42,291 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 16:10:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56364 states. [2020-04-18 16:10:45,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56364 to 32253. [2020-04-18 16:10:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32253 states. [2020-04-18 16:10:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32253 states to 32253 states and 126075 transitions. [2020-04-18 16:10:45,532 INFO L78 Accepts]: Start accepts. Automaton has 32253 states and 126075 transitions. Word has length 25 [2020-04-18 16:10:45,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:10:45,534 INFO L479 AbstractCegarLoop]: Abstraction has 32253 states and 126075 transitions. [2020-04-18 16:10:45,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 16:10:45,534 INFO L276 IsEmpty]: Start isEmpty. Operand 32253 states and 126075 transitions. [2020-04-18 16:10:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 16:10:45,543 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:10:45,543 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:10:45,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 16:10:45,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:45,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1949369882, now seen corresponding path program 1 times [2020-04-18 16:10:45,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:10:45,544 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [681577756] [2020-04-18 16:10:45,545 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:45,547 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 88 transitions. [2020-04-18 16:10:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-04-18 16:10:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 16:10:45,551 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:10:45,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:45,552 INFO L82 PathProgramCache]: Analyzing trace with hash -361819702, now seen corresponding path program 2 times [2020-04-18 16:10:45,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:10:45,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165059657] [2020-04-18 16:10:45,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:10:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:10:45,738 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 16:10:45,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165059657] [2020-04-18 16:10:45,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:10:45,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:10:45,739 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:10:45,742 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:45,746 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 60 transitions. [2020-04-18 16:10:45,746 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:10:45,764 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:10:45,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:10:45,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:10:45,765 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-04-18 16:10:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:45,792 INFO L93 Difference]: Finished difference Result 63 states and 91 transitions. [2020-04-18 16:10:45,792 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 91 transitions. [2020-04-18 16:10:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 16:10:45,793 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:10:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:45,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1949369882, now seen corresponding path program 3 times [2020-04-18 16:10:45,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:10:45,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18591677] [2020-04-18 16:10:45,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:10:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:10:45,862 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 16:10:45,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18591677] [2020-04-18 16:10:45,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:10:45,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:10:45,864 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:10:45,866 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:45,870 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 50 transitions. [2020-04-18 16:10:45,871 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:10:45,883 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 16:10:45,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:10:45,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 16:10:45,884 INFO L87 Difference]: Start difference. First operand 63 states and 91 transitions. Second operand 3 states. [2020-04-18 16:10:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:45,890 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2020-04-18 16:10:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 107 transitions. [2020-04-18 16:10:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 16:10:45,893 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 16:10:45,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:45,893 INFO L82 PathProgramCache]: Analyzing trace with hash -606548066, now seen corresponding path program 4 times [2020-04-18 16:10:45,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:10:45,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618937151] [2020-04-18 16:10:45,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:10:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:10:45,982 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 16:10:45,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618937151] [2020-04-18 16:10:45,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:10:45,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:10:45,984 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:10:45,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:45,995 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 50 transitions. [2020-04-18 16:10:45,995 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:10:46,024 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 16:10:46,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:10:46,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 16:10:46,025 INFO L87 Difference]: Start difference. First operand 77 states and 107 transitions. Second operand 4 states. [2020-04-18 16:10:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:46,040 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2020-04-18 16:10:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 107 transitions. [2020-04-18 16:10:46,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:10:46,041 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [681577756] [2020-04-18 16:10:46,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:10:46,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 16:10:46,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [681577756] [2020-04-18 16:10:46,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 16:10:46,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:10:46,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 16:10:46,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 16:10:46,048 INFO L87 Difference]: Start difference. First operand 32253 states and 126075 transitions. Second operand 7 states. [2020-04-18 16:10:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:47,802 INFO L93 Difference]: Finished difference Result 31578 states and 109874 transitions. [2020-04-18 16:10:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 16:10:47,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-04-18 16:10:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:10:47,949 INFO L225 Difference]: With dead ends: 31578 [2020-04-18 16:10:47,949 INFO L226 Difference]: Without dead ends: 29562 [2020-04-18 16:10:47,961 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-04-18 16:10:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29562 states. [2020-04-18 16:10:48,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29562 to 22107. [2020-04-18 16:10:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22107 states. [2020-04-18 16:10:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22107 states to 22107 states and 78159 transitions. [2020-04-18 16:10:49,034 INFO L78 Accepts]: Start accepts. Automaton has 22107 states and 78159 transitions. Word has length 28 [2020-04-18 16:10:49,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:10:49,035 INFO L479 AbstractCegarLoop]: Abstraction has 22107 states and 78159 transitions. [2020-04-18 16:10:49,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 16:10:49,035 INFO L276 IsEmpty]: Start isEmpty. Operand 22107 states and 78159 transitions. [2020-04-18 16:10:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 16:10:49,040 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:10:49,040 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:10:49,040 INFO L427 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 16:10:49,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:49,041 INFO L82 PathProgramCache]: Analyzing trace with hash 556539335, now seen corresponding path program 1 times [2020-04-18 16:10:49,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:10:49,041 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1831017992] [2020-04-18 16:10:49,042 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:49,043 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 16:10:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 16:10:49,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 16:10:49,044 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:10:49,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:49,045 INFO L82 PathProgramCache]: Analyzing trace with hash 556539335, now seen corresponding path program 2 times [2020-04-18 16:10:49,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:10:49,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773970172] [2020-04-18 16:10:49,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:10:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:10:49,082 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 16:10:49,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773970172] [2020-04-18 16:10:49,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:10:49,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:10:49,083 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:10:49,085 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:49,088 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 16:10:49,089 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:10:49,097 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:10:49,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:10:49,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:10:49,098 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-04-18 16:10:49,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:49,108 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-04-18 16:10:49,109 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2020-04-18 16:10:49,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:10:49,109 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1831017992] [2020-04-18 16:10:49,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:10:49,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 16:10:49,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1831017992] [2020-04-18 16:10:49,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 16:10:49,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:10:49,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:10:49,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 16:10:49,111 INFO L87 Difference]: Start difference. First operand 22107 states and 78159 transitions. Second operand 4 states. [2020-04-18 16:10:49,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:49,288 INFO L93 Difference]: Finished difference Result 23262 states and 80970 transitions. [2020-04-18 16:10:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 16:10:49,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-04-18 16:10:49,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:10:49,337 INFO L225 Difference]: With dead ends: 23262 [2020-04-18 16:10:49,337 INFO L226 Difference]: Without dead ends: 15264 [2020-04-18 16:10:49,338 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 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 16:10:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15264 states. [2020-04-18 16:10:49,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15264 to 12876. [2020-04-18 16:10:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12876 states. [2020-04-18 16:10:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12876 states to 12876 states and 44642 transitions. [2020-04-18 16:10:49,725 INFO L78 Accepts]: Start accepts. Automaton has 12876 states and 44642 transitions. Word has length 31 [2020-04-18 16:10:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:10:49,727 INFO L479 AbstractCegarLoop]: Abstraction has 12876 states and 44642 transitions. [2020-04-18 16:10:49,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 16:10:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12876 states and 44642 transitions. [2020-04-18 16:10:49,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 16:10:49,749 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:10:49,750 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 16:10:49,750 INFO L427 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 16:10:49,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:49,750 INFO L82 PathProgramCache]: Analyzing trace with hash -264852827, now seen corresponding path program 1 times [2020-04-18 16:10:49,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:10:49,751 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [995453100] [2020-04-18 16:10:49,753 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:49,777 INFO L259 McrAutomatonBuilder]: Finished intersection with 475 states and 1180 transitions. [2020-04-18 16:10:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states. [2020-04-18 16:10:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 16:10:49,784 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:10:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:49,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1118601883, now seen corresponding path program 2 times [2020-04-18 16:10:49,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:10:49,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336070266] [2020-04-18 16:10:49,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:10:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:10:49,899 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 16:10:49,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336070266] [2020-04-18 16:10:49,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:10:49,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:10:49,901 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:10:49,908 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:50,202 INFO L259 McrAutomatonBuilder]: Finished intersection with 214 states and 439 transitions. [2020-04-18 16:10:50,202 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:10:50,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 16:10:50,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 16:10:50,299 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 16:10:50,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 16:10:50,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 16:10:50,300 INFO L87 Difference]: Start difference. First operand 475 states. Second operand 9 states. [2020-04-18 16:10:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:50,699 INFO L93 Difference]: Finished difference Result 688 states and 1624 transitions. [2020-04-18 16:10:50,699 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1624 transitions. [2020-04-18 16:10:50,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 16:10:50,702 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:10:50,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:50,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1061310979, now seen corresponding path program 3 times [2020-04-18 16:10:50,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:10:50,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404076834] [2020-04-18 16:10:50,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:10:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:10:50,799 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 16:10:50,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404076834] [2020-04-18 16:10:50,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:10:50,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 16:10:50,800 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:10:50,806 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:50,835 INFO L259 McrAutomatonBuilder]: Finished intersection with 157 states and 311 transitions. [2020-04-18 16:10:50,835 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:10:50,882 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 16:10:50,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 16:10:50,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2020-04-18 16:10:50,886 INFO L87 Difference]: Start difference. First operand 688 states and 1624 transitions. Second operand 5 states. [2020-04-18 16:10:50,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:50,912 INFO L93 Difference]: Finished difference Result 814 states and 1857 transitions. [2020-04-18 16:10:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1857 transitions. [2020-04-18 16:10:50,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 16:10:50,914 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 16:10:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:50,914 INFO L82 PathProgramCache]: Analyzing trace with hash -123569613, now seen corresponding path program 4 times [2020-04-18 16:10:50,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:10:50,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32244706] [2020-04-18 16:10:50,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:10:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:10:50,972 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 16:10:50,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32244706] [2020-04-18 16:10:50,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:10:50,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 16:10:50,973 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:10:50,977 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:10:50,996 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 219 transitions. [2020-04-18 16:10:50,997 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:10:51,017 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 16:10:51,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 16:10:51,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2020-04-18 16:10:51,018 INFO L87 Difference]: Start difference. First operand 814 states and 1857 transitions. Second operand 5 states. [2020-04-18 16:10:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:51,052 INFO L93 Difference]: Finished difference Result 838 states and 1886 transitions. [2020-04-18 16:10:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1886 transitions. [2020-04-18 16:10:51,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:10:51,054 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [995453100] [2020-04-18 16:10:51,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:10:51,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 16:10:51,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [995453100] [2020-04-18 16:10:51,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 16:10:51,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:10:51,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 16:10:51,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2020-04-18 16:10:51,056 INFO L87 Difference]: Start difference. First operand 12876 states and 44642 transitions. Second operand 13 states. [2020-04-18 16:10:51,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:10:51,536 INFO L93 Difference]: Finished difference Result 7092 states and 23714 transitions. [2020-04-18 16:10:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 16:10:51,536 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-04-18 16:10:51,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:10:51,537 INFO L225 Difference]: With dead ends: 7092 [2020-04-18 16:10:51,537 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 16:10:51,537 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=244, Invalid=1088, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 16:10:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 16:10:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 16:10:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 16:10:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 16:10:51,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-04-18 16:10:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:10:51,538 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 16:10:51,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 16:10:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 16:10:51,538 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:10:51,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 04:10:51 BasicIcfg [2020-04-18 16:10:51,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 16:10:51,544 INFO L168 Benchmark]: Toolchain (without parser) took 17157.25 ms. Allocated memory was 145.8 MB in the beginning and 1.0 GB in the end (delta: 900.2 MB). Free memory was 102.1 MB in the beginning and 392.4 MB in the end (delta: -290.3 MB). Peak memory consumption was 609.9 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:51,545 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 16:10:51,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.09 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.1 MB in the beginning and 161.9 MB in the end (delta: -61.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:51,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.05 ms. Allocated memory is still 203.4 MB. Free memory was 161.9 MB in the beginning and 159.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:51,547 INFO L168 Benchmark]: Boogie Preprocessor took 25.09 ms. Allocated memory is still 203.4 MB. Free memory was 159.9 MB in the beginning and 158.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:51,548 INFO L168 Benchmark]: RCFGBuilder took 622.56 ms. Allocated memory is still 203.4 MB. Free memory was 158.0 MB in the beginning and 125.7 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:51,549 INFO L168 Benchmark]: TraceAbstraction took 15767.53 ms. Allocated memory was 203.4 MB in the beginning and 1.0 GB in the end (delta: 842.5 MB). Free memory was 125.1 MB in the beginning and 392.4 MB in the end (delta: -267.3 MB). Peak memory consumption was 575.2 MB. Max. memory is 7.1 GB. [2020-04-18 16:10:51,553 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 145.8 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.09 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.1 MB in the beginning and 161.9 MB in the end (delta: -61.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.05 ms. Allocated memory is still 203.4 MB. Free memory was 161.9 MB in the beginning and 159.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.09 ms. Allocated memory is still 203.4 MB. Free memory was 159.9 MB in the beginning and 158.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 622.56 ms. Allocated memory is still 203.4 MB. Free memory was 158.0 MB in the beginning and 125.7 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15767.53 ms. Allocated memory was 203.4 MB in the beginning and 1.0 GB in the end (delta: 842.5 MB). Free memory was 125.1 MB in the beginning and 392.4 MB in the end (delta: -267.3 MB). Peak memory consumption was 575.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 700]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 820 SDtfs, 1241 SDslu, 2512 SDs, 0 SdLazy, 485 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 307 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34510occurred 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: 4.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 33954 StatesRemovedByMinimization, 3 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...