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_simpl4.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:18:03,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:18:03,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:18:04,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:18:04,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:18:04,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:18:04,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:18:04,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:18:04,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:18:04,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:18:04,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:18:04,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:18:04,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:18:04,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:18:04,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:18:04,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:18:04,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:18:04,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:18:04,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:18:04,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:18:04,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:18:04,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:18:04,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:18:04,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:18:04,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:18:04,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:18:04,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:18:04,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:18:04,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:18:04,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:18:04,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:18:04,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:18:04,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:18:04,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:18:04,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:18:04,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:18:04,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:18:04,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:18:04,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:18:04,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:18:04,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:18:04,048 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 23:18:04,061 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:18:04,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:18:04,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:18:04,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:18:04,063 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:18:04,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:18:04,064 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:18:04,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:18:04,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:18:04,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:18:04,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:18:04,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:18:04,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:18:04,065 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:18:04,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:18:04,065 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:18:04,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:18:04,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:18:04,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:18:04,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:18:04,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:18:04,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:18:04,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:18:04,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:18:04,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:18:04,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:18:04,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:18:04,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:18:04,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:18:04,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:18:04,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:18:04,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:18:04,389 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:18:04,389 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:18:04,390 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2019-10-14 23:18:04,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf256c459/3a96076d7ef54bc5b0ce39caed744373/FLAGde2fb74ab [2019-10-14 23:18:04,984 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:18:04,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2019-10-14 23:18:05,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf256c459/3a96076d7ef54bc5b0ce39caed744373/FLAGde2fb74ab [2019-10-14 23:18:05,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf256c459/3a96076d7ef54bc5b0ce39caed744373 [2019-10-14 23:18:05,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:18:05,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:18:05,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:05,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:18:05,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:18:05,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:05,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6bfa44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05, skipping insertion in model container [2019-10-14 23:18:05,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:05,346 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:18:05,397 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:18:05,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:05,998 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:18:06,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:06,134 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:18:06,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:06 WrapperNode [2019-10-14 23:18:06,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:06,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:18:06,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:18:06,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:18:06,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:06" (1/1) ... [2019-10-14 23:18:06,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:06" (1/1) ... [2019-10-14 23:18:06,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:06" (1/1) ... [2019-10-14 23:18:06,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:06" (1/1) ... [2019-10-14 23:18:06,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:06" (1/1) ... [2019-10-14 23:18:06,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:06" (1/1) ... [2019-10-14 23:18:06,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:06" (1/1) ... [2019-10-14 23:18:06,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:18:06,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:18:06,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:18:06,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:18:06,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:06" (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 23:18:06,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:18:06,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:18:06,320 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2019-10-14 23:18:06,320 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2019-10-14 23:18:06,321 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2019-10-14 23:18:06,321 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2019-10-14 23:18:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2019-10-14 23:18:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2019-10-14 23:18:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2019-10-14 23:18:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2019-10-14 23:18:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2019-10-14 23:18:06,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:18:06,323 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2019-10-14 23:18:06,324 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2019-10-14 23:18:06,324 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2019-10-14 23:18:06,325 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2019-10-14 23:18:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2019-10-14 23:18:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2019-10-14 23:18:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2019-10-14 23:18:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2019-10-14 23:18:06,328 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2019-10-14 23:18:06,328 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2019-10-14 23:18:06,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2019-10-14 23:18:06,328 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2019-10-14 23:18:06,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2019-10-14 23:18:06,329 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2019-10-14 23:18:06,329 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2019-10-14 23:18:06,329 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2019-10-14 23:18:06,329 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2019-10-14 23:18:06,329 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2019-10-14 23:18:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:18:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:18:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:18:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-14 23:18:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:18:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2019-10-14 23:18:06,330 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2019-10-14 23:18:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2019-10-14 23:18:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2019-10-14 23:18:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2019-10-14 23:18:06,331 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2019-10-14 23:18:06,332 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2019-10-14 23:18:06,332 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2019-10-14 23:18:06,332 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2019-10-14 23:18:06,333 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2019-10-14 23:18:06,333 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2019-10-14 23:18:06,333 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2019-10-14 23:18:06,333 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2019-10-14 23:18:06,333 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2019-10-14 23:18:06,333 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2019-10-14 23:18:06,333 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2019-10-14 23:18:06,334 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2019-10-14 23:18:06,334 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2019-10-14 23:18:06,334 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2019-10-14 23:18:06,334 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2019-10-14 23:18:06,334 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2019-10-14 23:18:06,334 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2019-10-14 23:18:06,334 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2019-10-14 23:18:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2019-10-14 23:18:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2019-10-14 23:18:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2019-10-14 23:18:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:18:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2019-10-14 23:18:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:18:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:18:06,692 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:06,771 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:06,772 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:06,780 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:06,791 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:06,791 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:06,798 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,056 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2019-10-14 23:18:07,057 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2019-10-14 23:18:07,059 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,180 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2019-10-14 23:18:07,180 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2019-10-14 23:18:07,207 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,241 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2019-10-14 23:18:07,241 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2019-10-14 23:18:07,355 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,365 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,366 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,366 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,375 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,375 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,376 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,403 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,403 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,443 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,473 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2019-10-14 23:18:07,474 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2019-10-14 23:18:07,476 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,605 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2019-10-14 23:18:07,605 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2019-10-14 23:18:07,667 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,676 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,676 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,676 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,689 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,690 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,690 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,696 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,696 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,706 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:18:07,706 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:18:07,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:07 BoogieIcfgContainer [2019-10-14 23:18:07,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:18:07,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:18:07,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:18:07,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:18:07,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:05" (1/3) ... [2019-10-14 23:18:07,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724eefcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:07, skipping insertion in model container [2019-10-14 23:18:07,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:06" (2/3) ... [2019-10-14 23:18:07,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724eefcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:07, skipping insertion in model container [2019-10-14 23:18:07,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:07" (3/3) ... [2019-10-14 23:18:07,716 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2019-10-14 23:18:07,727 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:18:07,736 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:18:07,748 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:18:07,777 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:18:07,777 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:18:07,777 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:18:07,777 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:18:07,777 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:18:07,778 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:18:07,778 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:18:07,778 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:18:07,806 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states. [2019-10-14 23:18:07,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 23:18:07,813 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:07,814 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 23:18:07,816 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:07,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:07,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1980583479, now seen corresponding path program 1 times [2019-10-14 23:18:07,831 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:07,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675127426] [2019-10-14 23:18:07,832 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:07,832 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:07,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:08,273 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 23:18:08,274 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675127426] [2019-10-14 23:18:08,275 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:08,275 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:18:08,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575422211] [2019-10-14 23:18:08,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:18:08,281 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:08,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:18:08,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:18:08,299 INFO L87 Difference]: Start difference. First operand 390 states. Second operand 5 states. [2019-10-14 23:18:10,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:10,136 INFO L93 Difference]: Finished difference Result 668 states and 982 transitions. [2019-10-14 23:18:10,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:10,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-14 23:18:10,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:10,164 INFO L225 Difference]: With dead ends: 668 [2019-10-14 23:18:10,164 INFO L226 Difference]: Without dead ends: 424 [2019-10-14 23:18:10,179 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 23:18:10,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-10-14 23:18:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 382. [2019-10-14 23:18:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2019-10-14 23:18:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 526 transitions. [2019-10-14 23:18:10,285 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 526 transitions. Word has length 20 [2019-10-14 23:18:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:10,285 INFO L462 AbstractCegarLoop]: Abstraction has 382 states and 526 transitions. [2019-10-14 23:18:10,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:18:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 526 transitions. [2019-10-14 23:18:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-14 23:18:10,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:10,288 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] [2019-10-14 23:18:10,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:10,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:10,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1877533292, now seen corresponding path program 1 times [2019-10-14 23:18:10,289 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:10,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257365880] [2019-10-14 23:18:10,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:10,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:10,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,640 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 23:18:10,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257365880] [2019-10-14 23:18:10,643 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:10,643 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:10,643 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236611642] [2019-10-14 23:18:10,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:10,648 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:10,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:10,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:10,648 INFO L87 Difference]: Start difference. First operand 382 states and 526 transitions. Second operand 6 states. [2019-10-14 23:18:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:13,179 INFO L93 Difference]: Finished difference Result 753 states and 1031 transitions. [2019-10-14 23:18:13,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:13,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-14 23:18:13,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:13,188 INFO L225 Difference]: With dead ends: 753 [2019-10-14 23:18:13,188 INFO L226 Difference]: Without dead ends: 588 [2019-10-14 23:18:13,190 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 23:18:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-10-14 23:18:13,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 527. [2019-10-14 23:18:13,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-10-14 23:18:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 719 transitions. [2019-10-14 23:18:13,253 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 719 transitions. Word has length 25 [2019-10-14 23:18:13,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:13,254 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 719 transitions. [2019-10-14 23:18:13,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 719 transitions. [2019-10-14 23:18:13,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 23:18:13,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:13,257 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] [2019-10-14 23:18:13,257 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:13,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:13,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2127650726, now seen corresponding path program 1 times [2019-10-14 23:18:13,258 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:13,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673174566] [2019-10-14 23:18:13,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:13,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:13,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,459 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 23:18:13,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673174566] [2019-10-14 23:18:13,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:13,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:13,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522526009] [2019-10-14 23:18:13,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:13,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:13,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:13,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:13,462 INFO L87 Difference]: Start difference. First operand 527 states and 719 transitions. Second operand 6 states. [2019-10-14 23:18:15,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:15,248 INFO L93 Difference]: Finished difference Result 699 states and 941 transitions. [2019-10-14 23:18:15,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:15,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-14 23:18:15,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:15,255 INFO L225 Difference]: With dead ends: 699 [2019-10-14 23:18:15,255 INFO L226 Difference]: Without dead ends: 678 [2019-10-14 23:18:15,256 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 23:18:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2019-10-14 23:18:15,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 591. [2019-10-14 23:18:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-10-14 23:18:15,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 802 transitions. [2019-10-14 23:18:15,337 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 802 transitions. Word has length 31 [2019-10-14 23:18:15,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:15,337 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 802 transitions. [2019-10-14 23:18:15,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:15,337 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 802 transitions. [2019-10-14 23:18:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-14 23:18:15,340 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:15,340 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] [2019-10-14 23:18:15,340 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:15,341 INFO L82 PathProgramCache]: Analyzing trace with hash -984761052, now seen corresponding path program 1 times [2019-10-14 23:18:15,341 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:15,341 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875782541] [2019-10-14 23:18:15,341 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:15,341 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:15,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,569 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 23:18:15,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875782541] [2019-10-14 23:18:15,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:15,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:15,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430634040] [2019-10-14 23:18:15,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:15,572 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:15,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:15,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:15,573 INFO L87 Difference]: Start difference. First operand 591 states and 802 transitions. Second operand 6 states. [2019-10-14 23:18:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:17,560 INFO L93 Difference]: Finished difference Result 1133 states and 1525 transitions. [2019-10-14 23:18:17,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:17,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-10-14 23:18:17,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:17,567 INFO L225 Difference]: With dead ends: 1133 [2019-10-14 23:18:17,567 INFO L226 Difference]: Without dead ends: 827 [2019-10-14 23:18:17,569 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 23:18:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-10-14 23:18:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 779. [2019-10-14 23:18:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2019-10-14 23:18:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1059 transitions. [2019-10-14 23:18:17,631 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1059 transitions. Word has length 33 [2019-10-14 23:18:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:17,631 INFO L462 AbstractCegarLoop]: Abstraction has 779 states and 1059 transitions. [2019-10-14 23:18:17,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1059 transitions. [2019-10-14 23:18:17,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:18:17,634 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:17,634 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] [2019-10-14 23:18:17,634 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:17,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:17,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1251517402, now seen corresponding path program 1 times [2019-10-14 23:18:17,635 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:17,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931395173] [2019-10-14 23:18:17,635 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:17,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:17,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,802 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 23:18:17,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931395173] [2019-10-14 23:18:17,802 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:17,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:17,803 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654758344] [2019-10-14 23:18:17,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:17,803 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:17,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:17,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:17,804 INFO L87 Difference]: Start difference. First operand 779 states and 1059 transitions. Second operand 8 states. [2019-10-14 23:18:20,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:20,077 INFO L93 Difference]: Finished difference Result 881 states and 1187 transitions. [2019-10-14 23:18:20,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:18:20,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-14 23:18:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:20,084 INFO L225 Difference]: With dead ends: 881 [2019-10-14 23:18:20,084 INFO L226 Difference]: Without dead ends: 876 [2019-10-14 23:18:20,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2019-10-14 23:18:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 822. [2019-10-14 23:18:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2019-10-14 23:18:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1111 transitions. [2019-10-14 23:18:20,158 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1111 transitions. Word has length 38 [2019-10-14 23:18:20,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:20,160 INFO L462 AbstractCegarLoop]: Abstraction has 822 states and 1111 transitions. [2019-10-14 23:18:20,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:20,161 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1111 transitions. [2019-10-14 23:18:20,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:18:20,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:20,163 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] [2019-10-14 23:18:20,163 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:20,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:20,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1679216250, now seen corresponding path program 1 times [2019-10-14 23:18:20,164 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:20,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257275575] [2019-10-14 23:18:20,164 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:20,165 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:20,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,370 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 23:18:20,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257275575] [2019-10-14 23:18:20,371 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:20,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:20,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074709142] [2019-10-14 23:18:20,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:20,372 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:20,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:20,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:20,373 INFO L87 Difference]: Start difference. First operand 822 states and 1111 transitions. Second operand 6 states. [2019-10-14 23:18:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:22,143 INFO L93 Difference]: Finished difference Result 856 states and 1153 transitions. [2019-10-14 23:18:22,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:22,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-14 23:18:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:22,148 INFO L225 Difference]: With dead ends: 856 [2019-10-14 23:18:22,148 INFO L226 Difference]: Without dead ends: 853 [2019-10-14 23:18:22,149 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 23:18:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-10-14 23:18:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 833. [2019-10-14 23:18:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2019-10-14 23:18:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1125 transitions. [2019-10-14 23:18:22,210 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1125 transitions. Word has length 38 [2019-10-14 23:18:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:22,211 INFO L462 AbstractCegarLoop]: Abstraction has 833 states and 1125 transitions. [2019-10-14 23:18:22,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1125 transitions. [2019-10-14 23:18:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 23:18:22,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:22,213 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] [2019-10-14 23:18:22,213 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:22,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:22,213 INFO L82 PathProgramCache]: Analyzing trace with hash 310268416, now seen corresponding path program 1 times [2019-10-14 23:18:22,214 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:22,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720382930] [2019-10-14 23:18:22,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:22,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:22,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,458 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 23:18:22,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720382930] [2019-10-14 23:18:22,459 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:22,459 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:18:22,459 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995007789] [2019-10-14 23:18:22,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:18:22,460 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:22,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:18:22,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:22,461 INFO L87 Difference]: Start difference. First operand 833 states and 1125 transitions. Second operand 10 states. [2019-10-14 23:18:25,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:25,038 INFO L93 Difference]: Finished difference Result 896 states and 1205 transitions. [2019-10-14 23:18:25,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:18:25,038 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2019-10-14 23:18:25,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:25,044 INFO L225 Difference]: With dead ends: 896 [2019-10-14 23:18:25,044 INFO L226 Difference]: Without dead ends: 881 [2019-10-14 23:18:25,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:18:25,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-10-14 23:18:25,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 831. [2019-10-14 23:18:25,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2019-10-14 23:18:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1121 transitions. [2019-10-14 23:18:25,110 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1121 transitions. Word has length 39 [2019-10-14 23:18:25,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:25,110 INFO L462 AbstractCegarLoop]: Abstraction has 831 states and 1121 transitions. [2019-10-14 23:18:25,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:18:25,110 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1121 transitions. [2019-10-14 23:18:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-14 23:18:25,112 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:25,113 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 23:18:25,113 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:25,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:25,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1380961955, now seen corresponding path program 1 times [2019-10-14 23:18:25,114 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:25,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737569964] [2019-10-14 23:18:25,114 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:25,114 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:25,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,326 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 23:18:25,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737569964] [2019-10-14 23:18:25,327 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:25,327 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:18:25,327 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700500938] [2019-10-14 23:18:25,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:18:25,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:25,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:18:25,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:25,330 INFO L87 Difference]: Start difference. First operand 831 states and 1121 transitions. Second operand 10 states. [2019-10-14 23:18:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:27,107 INFO L93 Difference]: Finished difference Result 894 states and 1201 transitions. [2019-10-14 23:18:27,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:18:27,108 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-10-14 23:18:27,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:27,113 INFO L225 Difference]: With dead ends: 894 [2019-10-14 23:18:27,113 INFO L226 Difference]: Without dead ends: 874 [2019-10-14 23:18:27,114 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:18:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2019-10-14 23:18:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 824. [2019-10-14 23:18:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2019-10-14 23:18:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1112 transitions. [2019-10-14 23:18:27,171 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1112 transitions. Word has length 40 [2019-10-14 23:18:27,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:27,171 INFO L462 AbstractCegarLoop]: Abstraction has 824 states and 1112 transitions. [2019-10-14 23:18:27,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:18:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1112 transitions. [2019-10-14 23:18:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:18:27,173 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:27,173 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 23:18:27,173 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:27,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:27,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1241145468, now seen corresponding path program 1 times [2019-10-14 23:18:27,174 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:27,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376765582] [2019-10-14 23:18:27,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:27,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:27,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:27,388 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 23:18:27,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376765582] [2019-10-14 23:18:27,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:27,392 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:18:27,392 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765906110] [2019-10-14 23:18:27,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:27,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:27,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:27,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:18:27,393 INFO L87 Difference]: Start difference. First operand 824 states and 1112 transitions. Second operand 7 states. [2019-10-14 23:18:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:30,120 INFO L93 Difference]: Finished difference Result 1208 states and 1640 transitions. [2019-10-14 23:18:30,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:18:30,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2019-10-14 23:18:30,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:30,128 INFO L225 Difference]: With dead ends: 1208 [2019-10-14 23:18:30,129 INFO L226 Difference]: Without dead ends: 1205 [2019-10-14 23:18:30,130 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 23:18:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-10-14 23:18:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 937. [2019-10-14 23:18:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2019-10-14 23:18:30,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1266 transitions. [2019-10-14 23:18:30,205 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1266 transitions. Word has length 44 [2019-10-14 23:18:30,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:30,205 INFO L462 AbstractCegarLoop]: Abstraction has 937 states and 1266 transitions. [2019-10-14 23:18:30,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:30,205 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1266 transitions. [2019-10-14 23:18:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-14 23:18:30,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:30,207 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 23:18:30,208 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:30,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1407580827, now seen corresponding path program 1 times [2019-10-14 23:18:30,208 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:30,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872944271] [2019-10-14 23:18:30,209 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:30,209 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:30,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:30,615 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 23:18:30,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872944271] [2019-10-14 23:18:30,617 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:30,618 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:18:30,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629997802] [2019-10-14 23:18:30,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:18:30,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:30,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:18:30,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:30,619 INFO L87 Difference]: Start difference. First operand 937 states and 1266 transitions. Second operand 13 states. [2019-10-14 23:18:30,752 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-10-14 23:18:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:33,828 INFO L93 Difference]: Finished difference Result 998 states and 1338 transitions. [2019-10-14 23:18:33,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:18:33,831 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2019-10-14 23:18:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:33,840 INFO L225 Difference]: With dead ends: 998 [2019-10-14 23:18:33,840 INFO L226 Difference]: Without dead ends: 989 [2019-10-14 23:18:33,846 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:18:33,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2019-10-14 23:18:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 937. [2019-10-14 23:18:34,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2019-10-14 23:18:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1264 transitions. [2019-10-14 23:18:34,006 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1264 transitions. Word has length 43 [2019-10-14 23:18:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:34,007 INFO L462 AbstractCegarLoop]: Abstraction has 937 states and 1264 transitions. [2019-10-14 23:18:34,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:18:34,007 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1264 transitions. [2019-10-14 23:18:34,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-14 23:18:34,010 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:34,011 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 23:18:34,011 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:34,011 INFO L82 PathProgramCache]: Analyzing trace with hash -319659871, now seen corresponding path program 1 times [2019-10-14 23:18:34,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:34,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142418572] [2019-10-14 23:18:34,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:34,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:34,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:34,358 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 23:18:34,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142418572] [2019-10-14 23:18:34,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:34,360 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:34,360 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347119101] [2019-10-14 23:18:34,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:34,361 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:34,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:34,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:34,362 INFO L87 Difference]: Start difference. First operand 937 states and 1264 transitions. Second operand 8 states. [2019-10-14 23:18:34,711 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-10-14 23:18:34,880 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-10-14 23:18:37,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:37,485 INFO L93 Difference]: Finished difference Result 984 states and 1319 transitions. [2019-10-14 23:18:37,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:18:37,486 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-10-14 23:18:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:37,493 INFO L225 Difference]: With dead ends: 984 [2019-10-14 23:18:37,493 INFO L226 Difference]: Without dead ends: 962 [2019-10-14 23:18:37,494 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:18:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2019-10-14 23:18:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 939. [2019-10-14 23:18:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2019-10-14 23:18:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1266 transitions. [2019-10-14 23:18:37,606 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1266 transitions. Word has length 42 [2019-10-14 23:18:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:37,607 INFO L462 AbstractCegarLoop]: Abstraction has 939 states and 1266 transitions. [2019-10-14 23:18:37,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:37,607 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1266 transitions. [2019-10-14 23:18:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-14 23:18:37,609 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:37,610 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] [2019-10-14 23:18:37,610 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:37,611 INFO L82 PathProgramCache]: Analyzing trace with hash -58863371, now seen corresponding path program 1 times [2019-10-14 23:18:37,611 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:37,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654701482] [2019-10-14 23:18:37,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:37,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:37,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:37,983 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 23:18:37,983 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654701482] [2019-10-14 23:18:37,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:37,984 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:18:37,984 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18257202] [2019-10-14 23:18:37,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:18:37,985 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:37,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:18:37,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:37,986 INFO L87 Difference]: Start difference. First operand 939 states and 1266 transitions. Second operand 11 states. [2019-10-14 23:18:38,260 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83