java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:17:51,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:17:51,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:17:51,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:17:51,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:17:51,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:17:51,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:17:51,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:17:51,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:17:51,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:17:51,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:17:51,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:17:51,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:17:51,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:17:51,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:17:51,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:17:51,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:17:51,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:17:51,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:17:51,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:17:51,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:17:51,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:17:51,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:17:51,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:17:51,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:17:51,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:17:51,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:17:51,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:17:51,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:17:51,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:17:51,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:17:51,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:17:51,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:17:51,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:17:51,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:17:51,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:17:51,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:17:51,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:17:51,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:17:51,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:17:51,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:17:51,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:17:51,971 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:17:51,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:17:51,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:17:51,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:17:51,975 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:17:51,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:17:51,976 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:17:51,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:17:51,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:17:51,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:17:51,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:17:51,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:17:51,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:17:51,977 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:17:51,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:17:51,978 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:17:51,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:17:51,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:17:51,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:17:51,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:17:51,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:17:51,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:51,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:17:51,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:17:51,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:17:51,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:17:51,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:17:51,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:17:51,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:17:52,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:17:52,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:17:52,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:17:52,276 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:17:52,276 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:17:52,277 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2019-10-14 23:17:52,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9c89bf04/634abffc329f43839ab03897005273ff/FLAG484dfcb88 [2019-10-14 23:17:52,888 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:52,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2019-10-14 23:17:52,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9c89bf04/634abffc329f43839ab03897005273ff/FLAG484dfcb88 [2019-10-14 23:17:53,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9c89bf04/634abffc329f43839ab03897005273ff [2019-10-14 23:17:53,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:53,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:53,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:53,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:53,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:53,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:53" (1/1) ... [2019-10-14 23:17:53,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ffde3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53, skipping insertion in model container [2019-10-14 23:17:53,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:53" (1/1) ... [2019-10-14 23:17:53,251 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:53,306 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:53,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:53,730 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:53,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:53,837 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:53,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53 WrapperNode [2019-10-14 23:17:53,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:53,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:53,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:53,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:53,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53" (1/1) ... [2019-10-14 23:17:53,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53" (1/1) ... [2019-10-14 23:17:53,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53" (1/1) ... [2019-10-14 23:17:53,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53" (1/1) ... [2019-10-14 23:17:53,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53" (1/1) ... [2019-10-14 23:17:53,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53" (1/1) ... [2019-10-14 23:17:53,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53" (1/1) ... [2019-10-14 23:17:53,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:53,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:53,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:53,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:53,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53" (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 [2019-10-14 23:17:54,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2019-10-14 23:17:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2019-10-14 23:17:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2019-10-14 23:17:54,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2019-10-14 23:17:54,005 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2019-10-14 23:17:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2019-10-14 23:17:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2019-10-14 23:17:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2019-10-14 23:17:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2019-10-14 23:17:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2019-10-14 23:17:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2019-10-14 23:17:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2019-10-14 23:17:54,010 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2019-10-14 23:17:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2019-10-14 23:17:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2019-10-14 23:17:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2019-10-14 23:17:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2019-10-14 23:17:54,012 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2019-10-14 23:17:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2019-10-14 23:17:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2019-10-14 23:17:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2019-10-14 23:17:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2019-10-14 23:17:54,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2019-10-14 23:17:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:17:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:17:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-14 23:17:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:17:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2019-10-14 23:17:54,014 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2019-10-14 23:17:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2019-10-14 23:17:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2019-10-14 23:17:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2019-10-14 23:17:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2019-10-14 23:17:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2019-10-14 23:17:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2019-10-14 23:17:54,015 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2019-10-14 23:17:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2019-10-14 23:17:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2019-10-14 23:17:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2019-10-14 23:17:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2019-10-14 23:17:54,016 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2019-10-14 23:17:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2019-10-14 23:17:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2019-10-14 23:17:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2019-10-14 23:17:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2019-10-14 23:17:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2019-10-14 23:17:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2019-10-14 23:17:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2019-10-14 23:17:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2019-10-14 23:17:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2019-10-14 23:17:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:54,304 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:54,394 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:54,395 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:54,407 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:54,426 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:54,426 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:54,432 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:54,693 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2019-10-14 23:17:54,694 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2019-10-14 23:17:54,696 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:54,891 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2019-10-14 23:17:54,891 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2019-10-14 23:17:54,907 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:54,948 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2019-10-14 23:17:54,949 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2019-10-14 23:17:55,069 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:55,080 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:55,080 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:55,081 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:55,092 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:55,093 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:55,094 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:55,109 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:55,109 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:55,160 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:55,200 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2019-10-14 23:17:55,201 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2019-10-14 23:17:55,232 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:55,240 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:55,240 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:55,241 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:55,274 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:55,274 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:55,275 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:55,282 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:55,282 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:55,292 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:55,293 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:17:55,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:55 BoogieIcfgContainer [2019-10-14 23:17:55,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:55,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:55,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:55,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:55,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:53" (1/3) ... [2019-10-14 23:17:55,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d86c37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:55, skipping insertion in model container [2019-10-14 23:17:55,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:53" (2/3) ... [2019-10-14 23:17:55,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d86c37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:55, skipping insertion in model container [2019-10-14 23:17:55,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:55" (3/3) ... [2019-10-14 23:17:55,302 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2019-10-14 23:17:55,312 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:17:55,320 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:17:55,331 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:17:55,358 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:17:55,359 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:17:55,359 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:17:55,359 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:17:55,359 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:17:55,359 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:17:55,359 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:17:55,360 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:17:55,386 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2019-10-14 23:17:55,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 23:17:55,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:55,393 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:55,395 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:55,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:55,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1935172457, now seen corresponding path program 1 times [2019-10-14 23:17:55,409 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:55,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099076417] [2019-10-14 23:17:55,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:55,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:55,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:55,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099076417] [2019-10-14 23:17:55,866 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:55,866 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:17:55,867 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187163066] [2019-10-14 23:17:55,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:17:55,871 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:55,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:17:55,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:17:55,888 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 5 states. [2019-10-14 23:17:57,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:57,306 INFO L93 Difference]: Finished difference Result 540 states and 783 transitions. [2019-10-14 23:17:57,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:17:57,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-14 23:17:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:57,326 INFO L225 Difference]: With dead ends: 540 [2019-10-14 23:17:57,326 INFO L226 Difference]: Without dead ends: 324 [2019-10-14 23:17:57,333 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:17:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2019-10-14 23:17:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 294. [2019-10-14 23:17:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-14 23:17:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 388 transitions. [2019-10-14 23:17:57,445 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 388 transitions. Word has length 20 [2019-10-14 23:17:57,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:57,445 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 388 transitions. [2019-10-14 23:17:57,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:17:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 388 transitions. [2019-10-14 23:17:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-14 23:17:57,447 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:57,447 INFO L380 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] [2019-10-14 23:17:57,447 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash -657914795, now seen corresponding path program 1 times [2019-10-14 23:17:57,448 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:57,448 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919813644] [2019-10-14 23:17:57,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:57,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:57,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:57,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919813644] [2019-10-14 23:17:57,848 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:57,848 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:17:57,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496799477] [2019-10-14 23:17:57,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:17:57,851 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:57,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:17:57,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:17:57,851 INFO L87 Difference]: Start difference. First operand 294 states and 388 transitions. Second operand 7 states. [2019-10-14 23:18:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:00,230 INFO L93 Difference]: Finished difference Result 854 states and 1136 transitions. [2019-10-14 23:18:00,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:18:00,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-10-14 23:18:00,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:00,238 INFO L225 Difference]: With dead ends: 854 [2019-10-14 23:18:00,238 INFO L226 Difference]: Without dead ends: 581 [2019-10-14 23:18:00,240 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2019-10-14 23:18:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 383. [2019-10-14 23:18:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2019-10-14 23:18:00,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 500 transitions. [2019-10-14 23:18:00,297 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 500 transitions. Word has length 28 [2019-10-14 23:18:00,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:00,297 INFO L462 AbstractCegarLoop]: Abstraction has 383 states and 500 transitions. [2019-10-14 23:18:00,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:00,297 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 500 transitions. [2019-10-14 23:18:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-14 23:18:00,298 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:00,298 INFO L380 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] [2019-10-14 23:18:00,299 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:00,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:00,299 INFO L82 PathProgramCache]: Analyzing trace with hash 151431831, now seen corresponding path program 1 times [2019-10-14 23:18:00,299 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:00,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381835204] [2019-10-14 23:18:00,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:00,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:00,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:00,548 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381835204] [2019-10-14 23:18:00,548 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:00,548 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:00,549 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016869158] [2019-10-14 23:18:00,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:00,551 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:00,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:00,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:00,551 INFO L87 Difference]: Start difference. First operand 383 states and 500 transitions. Second operand 6 states. [2019-10-14 23:18:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:02,431 INFO L93 Difference]: Finished difference Result 764 states and 1021 transitions. [2019-10-14 23:18:02,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:02,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-10-14 23:18:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:02,441 INFO L225 Difference]: With dead ends: 764 [2019-10-14 23:18:02,441 INFO L226 Difference]: Without dead ends: 601 [2019-10-14 23:18:02,445 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:02,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2019-10-14 23:18:02,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 526. [2019-10-14 23:18:02,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-14 23:18:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 689 transitions. [2019-10-14 23:18:02,533 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 689 transitions. Word has length 28 [2019-10-14 23:18:02,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:02,534 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 689 transitions. [2019-10-14 23:18:02,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:02,534 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 689 transitions. [2019-10-14 23:18:02,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 23:18:02,535 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:02,535 INFO L380 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] [2019-10-14 23:18:02,536 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:02,536 INFO L82 PathProgramCache]: Analyzing trace with hash -523056827, now seen corresponding path program 1 times [2019-10-14 23:18:02,536 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:02,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628613164] [2019-10-14 23:18:02,537 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:02,537 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:02,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:02,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628613164] [2019-10-14 23:18:02,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:02,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:02,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242313265] [2019-10-14 23:18:02,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:02,719 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:02,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:02,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:02,720 INFO L87 Difference]: Start difference. First operand 526 states and 689 transitions. Second operand 6 states. [2019-10-14 23:18:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:04,441 INFO L93 Difference]: Finished difference Result 1082 states and 1431 transitions. [2019-10-14 23:18:04,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:04,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-14 23:18:04,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:04,449 INFO L225 Difference]: With dead ends: 1082 [2019-10-14 23:18:04,450 INFO L226 Difference]: Without dead ends: 775 [2019-10-14 23:18:04,452 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:04,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2019-10-14 23:18:04,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 714. [2019-10-14 23:18:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2019-10-14 23:18:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 946 transitions. [2019-10-14 23:18:04,561 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 946 transitions. Word has length 30 [2019-10-14 23:18:04,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:04,562 INFO L462 AbstractCegarLoop]: Abstraction has 714 states and 946 transitions. [2019-10-14 23:18:04,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 946 transitions. [2019-10-14 23:18:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-14 23:18:04,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:04,569 INFO L380 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] [2019-10-14 23:18:04,569 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:04,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:04,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1040933871, now seen corresponding path program 1 times [2019-10-14 23:18:04,570 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:04,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667411037] [2019-10-14 23:18:04,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:04,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:04,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:04,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667411037] [2019-10-14 23:18:04,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:04,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:04,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119687358] [2019-10-14 23:18:04,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:04,754 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:04,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:04,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:04,755 INFO L87 Difference]: Start difference. First operand 714 states and 946 transitions. Second operand 6 states. [2019-10-14 23:18:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:05,904 INFO L93 Difference]: Finished difference Result 890 states and 1167 transitions. [2019-10-14 23:18:05,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:05,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-10-14 23:18:05,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:05,910 INFO L225 Difference]: With dead ends: 890 [2019-10-14 23:18:05,910 INFO L226 Difference]: Without dead ends: 870 [2019-10-14 23:18:05,911 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-10-14 23:18:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 803. [2019-10-14 23:18:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-10-14 23:18:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1061 transitions. [2019-10-14 23:18:06,005 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1061 transitions. Word has length 34 [2019-10-14 23:18:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:06,005 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1061 transitions. [2019-10-14 23:18:06,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1061 transitions. [2019-10-14 23:18:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-14 23:18:06,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:06,008 INFO L380 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] [2019-10-14 23:18:06,008 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:06,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1618645229, now seen corresponding path program 1 times [2019-10-14 23:18:06,009 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:06,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42703969] [2019-10-14 23:18:06,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:06,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:06,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:06,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42703969] [2019-10-14 23:18:06,201 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:06,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:18:06,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626488407] [2019-10-14 23:18:06,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:06,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:06,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:06,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:18:06,203 INFO L87 Difference]: Start difference. First operand 803 states and 1061 transitions. Second operand 7 states. [2019-10-14 23:18:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:08,723 INFO L93 Difference]: Finished difference Result 1191 states and 1597 transitions. [2019-10-14 23:18:08,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:18:08,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-10-14 23:18:08,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:08,735 INFO L225 Difference]: With dead ends: 1191 [2019-10-14 23:18:08,735 INFO L226 Difference]: Without dead ends: 1188 [2019-10-14 23:18:08,736 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:08,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2019-10-14 23:18:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 918. [2019-10-14 23:18:08,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2019-10-14 23:18:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1219 transitions. [2019-10-14 23:18:08,838 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1219 transitions. Word has length 41 [2019-10-14 23:18:08,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:08,839 INFO L462 AbstractCegarLoop]: Abstraction has 918 states and 1219 transitions. [2019-10-14 23:18:08,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1219 transitions. [2019-10-14 23:18:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-14 23:18:08,844 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:08,844 INFO L380 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] [2019-10-14 23:18:08,844 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:08,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1801190041, now seen corresponding path program 1 times [2019-10-14 23:18:08,845 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:08,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756072431] [2019-10-14 23:18:08,845 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:08,845 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:08,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:09,042 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756072431] [2019-10-14 23:18:09,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:09,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:09,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365067270] [2019-10-14 23:18:09,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:09,043 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:09,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:09,045 INFO L87 Difference]: Start difference. First operand 918 states and 1219 transitions. Second operand 6 states. [2019-10-14 23:18:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:10,474 INFO L93 Difference]: Finished difference Result 961 states and 1272 transitions. [2019-10-14 23:18:10,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:10,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2019-10-14 23:18:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:10,483 INFO L225 Difference]: With dead ends: 961 [2019-10-14 23:18:10,484 INFO L226 Difference]: Without dead ends: 958 [2019-10-14 23:18:10,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:18:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2019-10-14 23:18:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 929. [2019-10-14 23:18:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2019-10-14 23:18:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1231 transitions. [2019-10-14 23:18:10,563 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1231 transitions. Word has length 40 [2019-10-14 23:18:10,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:10,563 INFO L462 AbstractCegarLoop]: Abstraction has 929 states and 1231 transitions. [2019-10-14 23:18:10,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:10,564 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1231 transitions. [2019-10-14 23:18:10,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-14 23:18:10,565 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:10,565 INFO L380 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] [2019-10-14 23:18:10,565 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:10,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:10,566 INFO L82 PathProgramCache]: Analyzing trace with hash -2006089857, now seen corresponding path program 1 times [2019-10-14 23:18:10,566 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:10,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324456632] [2019-10-14 23:18:10,566 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:10,566 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:10,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:10,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324456632] [2019-10-14 23:18:10,764 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:10,764 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:10,765 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817067809] [2019-10-14 23:18:10,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:10,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:10,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:10,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:10,767 INFO L87 Difference]: Start difference. First operand 929 states and 1231 transitions. Second operand 8 states. [2019-10-14 23:18:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:12,354 INFO L93 Difference]: Finished difference Result 1030 states and 1355 transitions. [2019-10-14 23:18:12,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:18:12,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2019-10-14 23:18:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:12,362 INFO L225 Difference]: With dead ends: 1030 [2019-10-14 23:18:12,362 INFO L226 Difference]: Without dead ends: 1025 [2019-10-14 23:18:12,363 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:18:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2019-10-14 23:18:12,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 974. [2019-10-14 23:18:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2019-10-14 23:18:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1285 transitions. [2019-10-14 23:18:12,440 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1285 transitions. Word has length 41 [2019-10-14 23:18:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:12,440 INFO L462 AbstractCegarLoop]: Abstraction has 974 states and 1285 transitions. [2019-10-14 23:18:12,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1285 transitions. [2019-10-14 23:18:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-14 23:18:12,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:12,442 INFO L380 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] [2019-10-14 23:18:12,442 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:12,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:12,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1123776538, now seen corresponding path program 1 times [2019-10-14 23:18:12,443 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:12,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745687933] [2019-10-14 23:18:12,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:12,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:12,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:12,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745687933] [2019-10-14 23:18:12,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:12,690 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:18:12,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289889875] [2019-10-14 23:18:12,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:18:12,691 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:12,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:18:12,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:12,691 INFO L87 Difference]: Start difference. First operand 974 states and 1285 transitions. Second operand 11 states. [2019-10-14 23:18:13,038 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2019-10-14 23:18:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:15,617 INFO L93 Difference]: Finished difference Result 1818 states and 2385 transitions. [2019-10-14 23:18:15,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:18:15,617 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2019-10-14 23:18:15,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:15,624 INFO L225 Difference]: With dead ends: 1818 [2019-10-14 23:18:15,625 INFO L226 Difference]: Without dead ends: 1184 [2019-10-14 23:18:15,627 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:18:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2019-10-14 23:18:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 959. [2019-10-14 23:18:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-14 23:18:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1250 transitions. [2019-10-14 23:18:15,712 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1250 transitions. Word has length 42 [2019-10-14 23:18:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:15,713 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1250 transitions. [2019-10-14 23:18:15,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:18:15,713 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1250 transitions. [2019-10-14 23:18:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-14 23:18:15,715 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:15,715 INFO L380 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] [2019-10-14 23:18:15,715 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:15,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:15,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1606408613, now seen corresponding path program 1 times [2019-10-14 23:18:15,716 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:15,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558331628] [2019-10-14 23:18:15,716 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:15,716 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:15,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:16,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558331628] [2019-10-14 23:18:16,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:16,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:18:16,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767346494] [2019-10-14 23:18:16,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:18:16,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:16,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:18:16,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:16,015 INFO L87 Difference]: Start difference. First operand 959 states and 1250 transitions. Second operand 13 states. [2019-10-14 23:18:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:18,204 INFO L93 Difference]: Finished difference Result 1033 states and 1338 transitions. [2019-10-14 23:18:18,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:18:18,207 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2019-10-14 23:18:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:18,213 INFO L225 Difference]: With dead ends: 1033 [2019-10-14 23:18:18,213 INFO L226 Difference]: Without dead ends: 1024 [2019-10-14 23:18:18,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:18:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-10-14 23:18:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 959. [2019-10-14 23:18:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-14 23:18:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1248 transitions. [2019-10-14 23:18:18,312 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1248 transitions. Word has length 42 [2019-10-14 23:18:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:18,312 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1248 transitions. [2019-10-14 23:18:18,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:18:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1248 transitions. [2019-10-14 23:18:18,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-14 23:18:18,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:18,314 INFO L380 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, 1] [2019-10-14 23:18:18,315 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:18,315 INFO L82 PathProgramCache]: Analyzing trace with hash 851921771, now seen corresponding path program 1 times [2019-10-14 23:18:18,315 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:18,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843516023] [2019-10-14 23:18:18,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:18,316 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:18,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:18,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843516023] [2019-10-14 23:18:18,610 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:18,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:18:18,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531826260] [2019-10-14 23:18:18,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:18:18,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:18,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:18:18,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:18,612 INFO L87 Difference]: Start difference. First operand 959 states and 1248 transitions. Second operand 13 states. [2019-10-14 23:18:21,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:21,390 INFO L93 Difference]: Finished difference Result 1033 states and 1335 transitions. [2019-10-14 23:18:21,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:18:21,391 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2019-10-14 23:18:21,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:21,397 INFO L225 Difference]: With dead ends: 1033 [2019-10-14 23:18:21,397 INFO L226 Difference]: Without dead ends: 1024 [2019-10-14 23:18:21,398 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:18:21,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-10-14 23:18:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 959. [2019-10-14 23:18:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-14 23:18:21,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1246 transitions. [2019-10-14 23:18:21,513 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1246 transitions. Word has length 43 [2019-10-14 23:18:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:21,513 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1246 transitions. [2019-10-14 23:18:21,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:18:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1246 transitions. [2019-10-14 23:18:21,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:18:21,515 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:21,515 INFO L380 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, 1, 1] [2019-10-14 23:18:21,515 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:21,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:21,516 INFO L82 PathProgramCache]: Analyzing trace with hash 694919684, now seen corresponding path program 1 times [2019-10-14 23:18:21,516 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:21,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217010892] [2019-10-14 23:18:21,516 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:21,516 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:21,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:21,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217010892] [2019-10-14 23:18:21,746 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:21,746 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:18:21,746 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732621051] [2019-10-14 23:18:21,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:18:21,747 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:21,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:18:21,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:21,748 INFO L87 Difference]: Start difference. First operand 959 states and 1246 transitions. Second operand 10 states. [2019-10-14 23:18:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:22,966 INFO L93 Difference]: Finished difference Result 1022 states and 1321 transitions. [2019-10-14 23:18:22,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:18:22,967 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2019-10-14 23:18:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:22,978 INFO L225 Difference]: With dead ends: 1022 [2019-10-14 23:18:22,978 INFO L226 Difference]: Without dead ends: 1004 [2019-10-14 23:18:22,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2019-10-14 23:18:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 957. [2019-10-14 23:18:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2019-10-14 23:18:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1242 transitions. [2019-10-14 23:18:23,130 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1242 transitions. Word has length 44 [2019-10-14 23:18:23,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:23,133 INFO L462 AbstractCegarLoop]: Abstraction has 957 states and 1242 transitions. [2019-10-14 23:18:23,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:18:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1242 transitions. [2019-10-14 23:18:23,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-14 23:18:23,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:23,136 INFO L380 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:23,137 INFO L410 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:23,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:23,137 INFO L82 PathProgramCache]: Analyzing trace with hash -357671628, now seen corresponding path program 1 times [2019-10-14 23:18:23,138 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:23,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113627912] [2019-10-14 23:18:23,138 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:23,138 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:23,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,354 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-10-14 23:18:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:23,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113627912] [2019-10-14 23:18:23,523 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:23,523 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:23,524 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278990592] [2019-10-14 23:18:23,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:23,525 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:23,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:23,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:23,526 INFO L87 Difference]: Start difference. First operand 957 states and 1242 transitions. Second operand 8 states. [2019-10-14 23:18:26,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:26,159 INFO L93 Difference]: Finished difference Result 1076 states and 1365 transitions. [2019-10-14 23:18:26,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:18:26,160 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2019-10-14 23:18:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:26,165 INFO L225 Difference]: With dead ends: 1076 [2019-10-14 23:18:26,166 INFO L226 Difference]: Without dead ends: 737 [2019-10-14 23:18:26,168 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-10-14 23:18:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 665. [2019-10-14 23:18:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2019-10-14 23:18:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 831 transitions. [2019-10-14 23:18:26,266 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 831 transitions. Word has length 49 [2019-10-14 23:18:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:26,267 INFO L462 AbstractCegarLoop]: Abstraction has 665 states and 831 transitions. [2019-10-14 23:18:26,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 831 transitions. [2019-10-14 23:18:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-14 23:18:26,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:26,271 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:26,271 INFO L410 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:26,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:26,272 INFO L82 PathProgramCache]: Analyzing trace with hash -396227580, now seen corresponding path program 1 times [2019-10-14 23:18:26,272 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:26,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654645357] [2019-10-14 23:18:26,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:26,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:26,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:26,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654645357] [2019-10-14 23:18:26,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:26,567 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:26,567 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042564195] [2019-10-14 23:18:26,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:26,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:26,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:26,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:26,570 INFO L87 Difference]: Start difference. First operand 665 states and 831 transitions. Second operand 8 states.