/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 16:10:53,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 16:10:53,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 16:10:53,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 16:10:53,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 16:10:53,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 16:10:53,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 16:10:53,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 16:10:53,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 16:10:53,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 16:10:53,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 16:10:53,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 16:10:53,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 16:10:53,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 16:10:53,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 16:10:53,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 16:10:53,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 16:10:53,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 16:10:53,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 16:10:53,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 16:10:53,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 16:10:53,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 16:10:53,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 16:10:53,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 16:10:53,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 16:10:53,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 16:10:53,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 16:10:53,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 16:10:53,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 16:10:53,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 16:10:53,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 16:10:53,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 16:10:53,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 16:10:53,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 16:10:53,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 16:10:53,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 16:10:53,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 16:10:53,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 16:10:53,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 16:10:53,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 16:10:53,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 16:10:53,867 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 16:10:53,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 16:10:53,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 16:10:53,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 16:10:53,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 16:10:53,908 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 16:10:53,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 16:10:53,908 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 16:10:53,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 16:10:53,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 16:10:53,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 16:10:53,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 16:10:53,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 16:10:53,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 16:10:53,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 16:10:53,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 16:10:53,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 16:10:53,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 16:10:53,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 16:10:53,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 16:10:53,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 16:10:53,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 16:10:53,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 16:10:53,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 16:10:53,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 16:10:53,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 16:10:53,917 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 16:10:53,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 16:10:53,917 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 16:10:53,918 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 16:10:53,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 16:10:53,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 16:10:54,202 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 16:10:54,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 16:10:54,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 16:10:54,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 16:10:54,227 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 16:10:54,229 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-04-18 16:10:54,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca609a1b/a0edba4813b542debe1d5d3d49e9d451/FLAG576e9fa63 [2020-04-18 16:10:54,817 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 16:10:54,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-04-18 16:10:54,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca609a1b/a0edba4813b542debe1d5d3d49e9d451/FLAG576e9fa63 [2020-04-18 16:10:55,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca609a1b/a0edba4813b542debe1d5d3d49e9d451 [2020-04-18 16:10:55,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 16:10:55,137 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 16:10:55,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 16:10:55,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 16:10:55,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 16:10:55,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:55,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316a95e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55, skipping insertion in model container [2020-04-18 16:10:55,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:55,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 16:10:55,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 16:10:55,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:10:55,775 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 16:10:55,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:10:55,923 INFO L208 MainTranslator]: Completed translation [2020-04-18 16:10:55,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55 WrapperNode [2020-04-18 16:10:55,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 16:10:55,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 16:10:55,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 16:10:55,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 16:10:55,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:55,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:56,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 16:10:56,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 16:10:56,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 16:10:56,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 16:10:56,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:56,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:56,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:56,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:56,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:56,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:56,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (1/1) ... [2020-04-18 16:10:56,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 16:10:56,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 16:10:56,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 16:10:56,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 16:10:56,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (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 16:10:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 16:10:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 16:10:56,087 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-04-18 16:10:56,087 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-04-18 16:10:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 16:10:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 16:10:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 16:10:56,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 16:10:56,088 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-04-18 16:10:56,088 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-04-18 16:10:56,090 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 16:10:56,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 16:10:56,658 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-18 16:10:56,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:10:56 BoogieIcfgContainer [2020-04-18 16:10:56,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 16:10:56,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 16:10:56,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 16:10:56,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 16:10:56,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:10:55" (1/3) ... [2020-04-18 16:10:56,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3300d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:10:56, skipping insertion in model container [2020-04-18 16:10:56,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:10:55" (2/3) ... [2020-04-18 16:10:56,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3300d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:10:56, skipping insertion in model container [2020-04-18 16:10:56,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:10:56" (3/3) ... [2020-04-18 16:10:56,675 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2020-04-18 16:10:56,685 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 16:10:56,686 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 16:10:56,694 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 16:10:56,695 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 16:10:56,726 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,726 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,726 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,727 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,727 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,727 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,727 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,728 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,728 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,728 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,728 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,729 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,729 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,730 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,730 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,730 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,730 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,730 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,731 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,731 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,731 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,731 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,732 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,732 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,732 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,733 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,733 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,733 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,733 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,734 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,734 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,734 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,734 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,734 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,735 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,735 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,735 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,735 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,736 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,736 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,736 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,736 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,740 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,740 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,741 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,741 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,741 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,741 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,743 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,744 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,744 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,744 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,744 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,745 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,745 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,749 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,749 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,749 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,749 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,749 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,750 WARN L315 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,752 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,752 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,752 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,752 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,753 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,753 WARN L315 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,753 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:10:56,795 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-04-18 16:10:56,812 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 16:10:56,812 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 16:10:56,813 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 16:10:56,813 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 16:10:56,813 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 16:10:56,813 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 16:10:56,813 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 16:10:56,813 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 16:10:56,828 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 102 transitions, 272 flow [2020-04-18 16:10:59,936 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 39862 states. [2020-04-18 16:10:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 39862 states. [2020-04-18 16:10:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:10:59,950 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:10:59,951 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 16:10:59,952 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 16:10:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:10:59,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1640140313, now seen corresponding path program 1 times [2020-04-18 16:10:59,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:10:59,969 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1215224660] [2020-04-18 16:10:59,985 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:00,004 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 16:11:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 16:11:00,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:11:00,008 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:11:00,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:00,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1640140313, now seen corresponding path program 2 times [2020-04-18 16:11:00,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:00,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516572993] [2020-04-18 16:11:00,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:00,237 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 16:11:00,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516572993] [2020-04-18 16:11:00,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:00,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:11:00,240 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:00,242 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:00,251 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2020-04-18 16:11:00,252 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:00,271 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:11:00,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:11:00,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:11:00,280 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-04-18 16:11:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:00,310 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-04-18 16:11:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2020-04-18 16:11:00,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:11:00,312 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1215224660] [2020-04-18 16:11:00,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:11:00,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 16:11:00,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1215224660] [2020-04-18 16:11:00,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 16:11:00,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:11:00,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:11:00,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 16:11:00,320 INFO L87 Difference]: Start difference. First operand 39862 states. Second operand 4 states. [2020-04-18 16:11:02,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:02,106 INFO L93 Difference]: Finished difference Result 74813 states and 291136 transitions. [2020-04-18 16:11:02,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 16:11:02,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-04-18 16:11:02,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:11:02,704 INFO L225 Difference]: With dead ends: 74813 [2020-04-18 16:11:02,704 INFO L226 Difference]: Without dead ends: 54951 [2020-04-18 16:11:02,709 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 16:11:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54951 states. [2020-04-18 16:11:05,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54951 to 35490. [2020-04-18 16:11:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35490 states. [2020-04-18 16:11:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35490 states to 35490 states and 139095 transitions. [2020-04-18 16:11:05,784 INFO L78 Accepts]: Start accepts. Automaton has 35490 states and 139095 transitions. Word has length 25 [2020-04-18 16:11:05,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:11:05,784 INFO L479 AbstractCegarLoop]: Abstraction has 35490 states and 139095 transitions. [2020-04-18 16:11:05,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 16:11:05,784 INFO L276 IsEmpty]: Start isEmpty. Operand 35490 states and 139095 transitions. [2020-04-18 16:11:05,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 16:11:05,792 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:11:05,792 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 16:11:05,793 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 16:11:05,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:05,793 INFO L82 PathProgramCache]: Analyzing trace with hash 978927101, now seen corresponding path program 1 times [2020-04-18 16:11:05,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:11:05,794 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [359874827] [2020-04-18 16:11:05,795 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:05,796 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 88 transitions. [2020-04-18 16:11:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-04-18 16:11:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 16:11:05,798 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:11:05,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:05,798 INFO L82 PathProgramCache]: Analyzing trace with hash -205131509, now seen corresponding path program 2 times [2020-04-18 16:11:05,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:05,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157984764] [2020-04-18 16:11:05,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:05,964 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 16:11:05,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157984764] [2020-04-18 16:11:05,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:05,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:11:05,966 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:05,969 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:05,973 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 60 transitions. [2020-04-18 16:11:05,973 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:05,992 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:11:05,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:11:05,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:11:05,993 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-04-18 16:11:06,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:06,031 INFO L93 Difference]: Finished difference Result 63 states and 91 transitions. [2020-04-18 16:11:06,031 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 91 transitions. [2020-04-18 16:11:06,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 16:11:06,032 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:11:06,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:06,032 INFO L82 PathProgramCache]: Analyzing trace with hash 978927101, now seen corresponding path program 3 times [2020-04-18 16:11:06,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:06,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954594740] [2020-04-18 16:11:06,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:06,138 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 16:11:06,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954594740] [2020-04-18 16:11:06,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:06,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:11:06,139 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:06,142 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:06,151 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 50 transitions. [2020-04-18 16:11:06,151 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:06,161 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:11:06,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:11:06,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 16:11:06,162 INFO L87 Difference]: Start difference. First operand 63 states and 91 transitions. Second operand 3 states. [2020-04-18 16:11:06,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:06,166 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2020-04-18 16:11:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 107 transitions. [2020-04-18 16:11:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-04-18 16:11:06,167 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 16:11:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:06,167 INFO L82 PathProgramCache]: Analyzing trace with hash -176867335, now seen corresponding path program 4 times [2020-04-18 16:11:06,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:06,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111165263] [2020-04-18 16:11:06,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:06,282 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 16:11:06,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111165263] [2020-04-18 16:11:06,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:06,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:11:06,284 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:06,287 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:06,292 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 50 transitions. [2020-04-18 16:11:06,292 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:06,325 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 16:11:06,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:11:06,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 16:11:06,326 INFO L87 Difference]: Start difference. First operand 77 states and 107 transitions. Second operand 4 states. [2020-04-18 16:11:06,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:06,368 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2020-04-18 16:11:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 107 transitions. [2020-04-18 16:11:06,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:11:06,370 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [359874827] [2020-04-18 16:11:06,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:11:06,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 16:11:06,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [359874827] [2020-04-18 16:11:06,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 16:11:06,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:11:06,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 16:11:06,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 16:11:06,372 INFO L87 Difference]: Start difference. First operand 35490 states and 139095 transitions. Second operand 7 states. [2020-04-18 16:11:07,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:07,543 INFO L93 Difference]: Finished difference Result 58824 states and 212681 transitions. [2020-04-18 16:11:07,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 16:11:07,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-04-18 16:11:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:11:07,808 INFO L225 Difference]: With dead ends: 58824 [2020-04-18 16:11:07,808 INFO L226 Difference]: Without dead ends: 56808 [2020-04-18 16:11:07,810 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-04-18 16:11:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56808 states. [2020-04-18 16:11:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56808 to 29181. [2020-04-18 16:11:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29181 states. [2020-04-18 16:11:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29181 states to 29181 states and 107514 transitions. [2020-04-18 16:11:10,713 INFO L78 Accepts]: Start accepts. Automaton has 29181 states and 107514 transitions. Word has length 28 [2020-04-18 16:11:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:11:10,713 INFO L479 AbstractCegarLoop]: Abstraction has 29181 states and 107514 transitions. [2020-04-18 16:11:10,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 16:11:10,713 INFO L276 IsEmpty]: Start isEmpty. Operand 29181 states and 107514 transitions. [2020-04-18 16:11:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 16:11:10,718 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:11:10,718 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 16:11:10,718 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 16:11:10,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:10,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1817030207, now seen corresponding path program 1 times [2020-04-18 16:11:10,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:11:10,719 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [255434192] [2020-04-18 16:11:10,720 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:10,721 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 16:11:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 16:11:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 16:11:10,722 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:11:10,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:10,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1817030207, now seen corresponding path program 2 times [2020-04-18 16:11:10,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:10,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664816365] [2020-04-18 16:11:10,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:10,774 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 16:11:10,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664816365] [2020-04-18 16:11:10,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:10,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:11:10,776 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:10,778 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:10,782 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 16:11:10,782 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:10,789 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:11:10,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:11:10,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:11:10,790 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-04-18 16:11:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:10,802 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-04-18 16:11:10,802 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2020-04-18 16:11:10,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:11:10,803 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [255434192] [2020-04-18 16:11:10,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:11:10,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 16:11:10,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [255434192] [2020-04-18 16:11:10,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 16:11:10,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:11:10,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:11:10,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 16:11:10,807 INFO L87 Difference]: Start difference. First operand 29181 states and 107514 transitions. Second operand 4 states. [2020-04-18 16:11:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:11,147 INFO L93 Difference]: Finished difference Result 46416 states and 168721 transitions. [2020-04-18 16:11:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 16:11:11,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-04-18 16:11:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:11:11,604 INFO L225 Difference]: With dead ends: 46416 [2020-04-18 16:11:11,605 INFO L226 Difference]: Without dead ends: 37263 [2020-04-18 16:11:11,605 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 16:11:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37263 states. [2020-04-18 16:11:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37263 to 23091. [2020-04-18 16:11:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23091 states. [2020-04-18 16:11:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23091 states to 23091 states and 85241 transitions. [2020-04-18 16:11:12,287 INFO L78 Accepts]: Start accepts. Automaton has 23091 states and 85241 transitions. Word has length 31 [2020-04-18 16:11:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:11:12,288 INFO L479 AbstractCegarLoop]: Abstraction has 23091 states and 85241 transitions. [2020-04-18 16:11:12,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 16:11:12,289 INFO L276 IsEmpty]: Start isEmpty. Operand 23091 states and 85241 transitions. [2020-04-18 16:11:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 16:11:12,301 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:11:12,301 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] [2020-04-18 16:11:12,301 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 16:11:12,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:12,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1878452053, now seen corresponding path program 1 times [2020-04-18 16:11:12,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:11:12,302 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1137487387] [2020-04-18 16:11:12,303 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:12,313 INFO L259 McrAutomatonBuilder]: Finished intersection with 347 states and 844 transitions. [2020-04-18 16:11:12,316 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-04-18 16:11:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 16:11:12,317 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:11:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:12,318 INFO L82 PathProgramCache]: Analyzing trace with hash 739013, now seen corresponding path program 2 times [2020-04-18 16:11:12,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:12,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271825035] [2020-04-18 16:11:12,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:12,382 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 16:11:12,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271825035] [2020-04-18 16:11:12,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:12,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:11:12,384 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:12,387 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:12,414 INFO L259 McrAutomatonBuilder]: Finished intersection with 195 states and 407 transitions. [2020-04-18 16:11:12,415 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:12,429 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:11:12,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:11:12,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:11:12,430 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2020-04-18 16:11:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:12,460 INFO L93 Difference]: Finished difference Result 387 states and 910 transitions. [2020-04-18 16:11:12,460 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 910 transitions. [2020-04-18 16:11:12,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 16:11:12,462 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:11:12,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:12,462 INFO L82 PathProgramCache]: Analyzing trace with hash 702179859, now seen corresponding path program 3 times [2020-04-18 16:11:12,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:12,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191527150] [2020-04-18 16:11:12,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:12,522 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 16:11:12,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191527150] [2020-04-18 16:11:12,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:12,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:11:12,523 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:12,526 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:12,552 INFO L259 McrAutomatonBuilder]: Finished intersection with 175 states and 352 transitions. [2020-04-18 16:11:12,552 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:12,561 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:11:12,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:11:12,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 16:11:12,563 INFO L87 Difference]: Start difference. First operand 387 states and 910 transitions. Second operand 3 states. [2020-04-18 16:11:12,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:12,574 INFO L93 Difference]: Finished difference Result 533 states and 1205 transitions. [2020-04-18 16:11:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 1205 transitions. [2020-04-18 16:11:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 16:11:12,578 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 16:11:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:12,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1878452053, now seen corresponding path program 4 times [2020-04-18 16:11:12,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:12,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904205392] [2020-04-18 16:11:12,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:12,915 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 16:11:12,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904205392] [2020-04-18 16:11:12,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:12,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 16:11:12,917 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:12,920 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:12,943 INFO L259 McrAutomatonBuilder]: Finished intersection with 142 states and 287 transitions. [2020-04-18 16:11:12,944 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:12,976 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 16:11:12,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 16:11:12,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 16:11:12,982 INFO L87 Difference]: Start difference. First operand 533 states and 1205 transitions. Second operand 5 states. [2020-04-18 16:11:13,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:13,003 INFO L93 Difference]: Finished difference Result 547 states and 1221 transitions. [2020-04-18 16:11:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1221 transitions. [2020-04-18 16:11:13,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:11:13,005 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1137487387] [2020-04-18 16:11:13,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:11:13,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 16:11:13,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1137487387] [2020-04-18 16:11:13,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 16:11:13,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:11:13,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 16:11:13,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 16:11:13,008 INFO L87 Difference]: Start difference. First operand 23091 states and 85241 transitions. Second operand 8 states. [2020-04-18 16:11:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:13,473 INFO L93 Difference]: Finished difference Result 15759 states and 54367 transitions. [2020-04-18 16:11:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 16:11:13,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-04-18 16:11:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:11:13,502 INFO L225 Difference]: With dead ends: 15759 [2020-04-18 16:11:13,502 INFO L226 Difference]: Without dead ends: 15759 [2020-04-18 16:11:13,503 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-04-18 16:11:13,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15759 states. [2020-04-18 16:11:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15759 to 13659. [2020-04-18 16:11:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13659 states. [2020-04-18 16:11:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13659 states to 13659 states and 47399 transitions. [2020-04-18 16:11:13,746 INFO L78 Accepts]: Start accepts. Automaton has 13659 states and 47399 transitions. Word has length 37 [2020-04-18 16:11:13,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:11:13,747 INFO L479 AbstractCegarLoop]: Abstraction has 13659 states and 47399 transitions. [2020-04-18 16:11:13,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 16:11:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 13659 states and 47399 transitions. [2020-04-18 16:11:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 16:11:13,763 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:11:13,763 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, 1] [2020-04-18 16:11:13,764 INFO L427 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 16:11:13,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:13,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1903400022, now seen corresponding path program 1 times [2020-04-18 16:11:13,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:11:13,765 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [736063091] [2020-04-18 16:11:13,766 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:13,782 INFO L259 McrAutomatonBuilder]: Finished intersection with 531 states and 1330 transitions. [2020-04-18 16:11:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states. [2020-04-18 16:11:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 16:11:13,787 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:11:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:13,787 INFO L82 PathProgramCache]: Analyzing trace with hash 151575470, now seen corresponding path program 2 times [2020-04-18 16:11:13,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:13,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396534804] [2020-04-18 16:11:13,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:11:13,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396534804] [2020-04-18 16:11:13,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:13,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 16:11:13,868 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:13,872 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:13,905 INFO L259 McrAutomatonBuilder]: Finished intersection with 203 states and 418 transitions. [2020-04-18 16:11:13,905 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:13,921 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:11:13,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:11:13,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 16:11:13,922 INFO L87 Difference]: Start difference. First operand 531 states. Second operand 4 states. [2020-04-18 16:11:13,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:13,959 INFO L93 Difference]: Finished difference Result 648 states and 1536 transitions. [2020-04-18 16:11:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1536 transitions. [2020-04-18 16:11:13,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 16:11:13,960 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:11:13,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:13,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2066367824, now seen corresponding path program 3 times [2020-04-18 16:11:13,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:13,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499915492] [2020-04-18 16:11:13,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:13,991 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 16:11:13,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499915492] [2020-04-18 16:11:13,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:13,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:11:13,993 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:13,997 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:14,035 INFO L259 McrAutomatonBuilder]: Finished intersection with 207 states and 422 transitions. [2020-04-18 16:11:14,035 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:14,051 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 16:11:14,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 16:11:14,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 16:11:14,052 INFO L87 Difference]: Start difference. First operand 648 states and 1536 transitions. Second operand 4 states. [2020-04-18 16:11:14,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:14,073 INFO L93 Difference]: Finished difference Result 746 states and 1714 transitions. [2020-04-18 16:11:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1714 transitions. [2020-04-18 16:11:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 16:11:14,075 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 16:11:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:14,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1012103884, now seen corresponding path program 4 times [2020-04-18 16:11:14,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:14,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100823492] [2020-04-18 16:11:14,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:14,116 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 16:11:14,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100823492] [2020-04-18 16:11:14,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:14,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 16:11:14,117 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:14,121 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:14,157 INFO L259 McrAutomatonBuilder]: Finished intersection with 166 states and 320 transitions. [2020-04-18 16:11:14,158 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:14,167 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 16:11:14,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 16:11:14,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 16:11:14,168 INFO L87 Difference]: Start difference. First operand 746 states and 1714 transitions. Second operand 3 states. [2020-04-18 16:11:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:14,176 INFO L93 Difference]: Finished difference Result 1107 states and 2427 transitions. [2020-04-18 16:11:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 2427 transitions. [2020-04-18 16:11:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 16:11:14,179 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 16:11:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:14,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1903400022, now seen corresponding path program 5 times [2020-04-18 16:11:14,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:14,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139061468] [2020-04-18 16:11:14,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:11:14,271 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 16:11:14,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139061468] [2020-04-18 16:11:14,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:11:14,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 16:11:14,272 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:11:14,276 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:11:14,313 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 412 transitions. [2020-04-18 16:11:14,313 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:11:14,376 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 16:11:14,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 16:11:14,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-04-18 16:11:14,378 INFO L87 Difference]: Start difference. First operand 1107 states and 2427 transitions. Second operand 7 states. [2020-04-18 16:11:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:11:14,482 INFO L93 Difference]: Finished difference Result 1162 states and 2502 transitions. [2020-04-18 16:11:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 2502 transitions. [2020-04-18 16:11:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 16:11:14,485 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 16:11:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:11:14,486 INFO L82 PathProgramCache]: Analyzing trace with hash -832827016, now seen corresponding path program 6 times [2020-04-18 16:11:14,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:11:14,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223597714] [2020-04-18 16:11:14,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:11:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 16:11:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 16:11:14,570 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 16:11:14,570 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 16:11:14,571 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 16:11:14,667 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-04-18 16:11:14,668 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_read_lock() [694] [2020-04-18 16:11:14,669 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-04-18 16:11:14,670 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_read_lock() [694] [2020-04-18 16:11:14,670 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-04-18 16:11:14,670 WARN L224 RCFGBacktranslator]: unable to determine which branch was taken at C: __VERIFIER_atomic_take_write_lock() [687] [2020-04-18 16:11:14,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 04:11:14 BasicIcfg [2020-04-18 16:11:14,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 16:11:14,720 INFO L168 Benchmark]: Toolchain (without parser) took 19598.07 ms. Allocated memory was 148.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 103.7 MB in the beginning and 830.7 MB in the end (delta: -727.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-04-18 16:11:14,721 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 148.4 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 16:11:14,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.80 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 101.9 MB in the beginning and 163.5 MB in the end (delta: -61.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-04-18 16:11:14,723 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.86 ms. Allocated memory is still 205.5 MB. Free memory was 163.5 MB in the beginning and 161.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 16:11:14,727 INFO L168 Benchmark]: Boogie Preprocessor took 25.32 ms. Allocated memory is still 205.5 MB. Free memory was 161.6 MB in the beginning and 159.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 16:11:14,728 INFO L168 Benchmark]: RCFGBuilder took 636.75 ms. Allocated memory is still 205.5 MB. Free memory was 159.8 MB in the beginning and 128.0 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-04-18 16:11:14,728 INFO L168 Benchmark]: TraceAbstraction took 18047.26 ms. Allocated memory was 205.5 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 127.3 MB in the beginning and 830.7 MB in the end (delta: -703.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-04-18 16:11:14,738 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 148.4 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 785.80 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 101.9 MB in the beginning and 163.5 MB in the end (delta: -61.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 75.86 ms. Allocated memory is still 205.5 MB. Free memory was 163.5 MB in the beginning and 161.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.32 ms. Allocated memory is still 205.5 MB. Free memory was 161.6 MB in the beginning and 159.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 636.75 ms. Allocated memory is still 205.5 MB. Free memory was 159.8 MB in the beginning and 128.0 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18047.26 ms. Allocated memory was 205.5 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 127.3 MB in the beginning and 830.7 MB in the end (delta: -703.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L677] 0 int w=0, r=0, x, y; VAL [r=0, w=0, x=0, y=0] [L703] 0 pthread_t t1, t2, t3, t4; VAL [r=0, w=0, x=0, y=0] [L704] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L705] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L693] 2 int l; VAL [r=0, w=0, x=0, y=0] [L694] CALL 2 __VERIFIER_atomic_take_read_lock() [L683] CALL 2 assume_abort_if_not(w==0) [L3] COND TRUE 2 !cond [L683] RET 2 assume_abort_if_not(w==0) [L684] 2 r = r+1 [L694] RET 2 __VERIFIER_atomic_take_read_lock() [L695] 2 l = x VAL [r=1, w=0, x=0, y=0] [L696] 2 y = l VAL [r=1, w=0, x=0, y=0] [L697] COND FALSE 2 !(!(y == x)) VAL [r=1, w=0, x=0, y=0] [L698] 2 l = r-1 VAL [r=1, w=0, x=0, y=0] [L706] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=1, w=0, x=0, y=0] [L707] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, w=0, x=0, y=0] [L693] 4 int l; VAL [r=1, w=0, x=0, y=0] [L694] CALL 4 __VERIFIER_atomic_take_read_lock() [L683] CALL 4 assume_abort_if_not(w==0) [L3] COND TRUE 4 !cond [L683] RET 4 assume_abort_if_not(w==0) [L684] 4 r = r+1 [L694] RET 4 __VERIFIER_atomic_take_read_lock() [L699] 2 r = l VAL [r=0, w=0, x=0, y=0] [L687] CALL 1 __VERIFIER_atomic_take_write_lock() [L679] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND TRUE 1 !cond [L679] RET 1 assume_abort_if_not(w==0 && r==0) [L680] 1 w = 1 [L687] RET 1 __VERIFIER_atomic_take_write_lock() [L695] 4 l = x VAL [r=0, w=1, x=0, y=0] [L688] 1 x = 3 VAL [r=0, w=1, x=3, y=0] [L696] 4 y = l VAL [r=0, w=1, x=3, y=0] [L697] COND TRUE 4 !(y == x) VAL [r=0, w=1, x=3, y=0] [L697] 4 __VERIFIER_error() VAL [r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 992 SDtfs, 1089 SDslu, 2350 SDs, 0 SdLazy, 502 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39862occurred 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: 6.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 63360 StatesRemovedByMinimization, 4 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 incorrect! Received shutdown request...