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-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:19:02,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:19:02,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:19:02,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:19:02,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:19:02,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:19:02,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:19:02,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:19:02,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:19:02,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:19:02,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:19:02,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:19:02,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:19:02,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:19:02,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:19:02,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:19:02,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:19:02,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:19:02,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:19:02,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:19:02,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:19:02,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:19:02,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:19:02,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:19:02,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:19:02,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:19:02,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:19:02,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:19:02,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:19:02,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:19:02,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:19:02,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:19:02,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:19:02,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:19:02,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:19:02,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:19:02,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:19:02,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:19:02,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:19:02,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:19:02,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:19:02,774 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 [2019-10-13 19:19:02,792 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:19:02,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:19:02,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:19:02,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:19:02,797 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:19:02,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:19:02,797 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:19:02,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:19:02,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:19:02,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:19:02,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:19:02,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:19:02,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:19:02,799 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:19:02,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:19:02,800 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:19:02,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:19:02,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:19:02,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:19:02,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:19:02,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:19:02,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:02,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:19:02,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:19:02,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:19:02,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:19:02,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:19:02,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:19:02,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:19:03,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:19:03,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:19:03,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:19:03,092 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:19:03,092 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:19:03,093 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2019-10-13 19:19:03,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a419603ec/90d37bd14fc24ca18081160cfa3069f4/FLAG00b12fbe4 [2019-10-13 19:19:03,690 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:19:03,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2019-10-13 19:19:03,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a419603ec/90d37bd14fc24ca18081160cfa3069f4/FLAG00b12fbe4 [2019-10-13 19:19:03,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a419603ec/90d37bd14fc24ca18081160cfa3069f4 [2019-10-13 19:19:03,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:19:03,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:19:03,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:03,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:19:03,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:19:03,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:03" (1/1) ... [2019-10-13 19:19:03,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349642a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:03, skipping insertion in model container [2019-10-13 19:19:03,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:03" (1/1) ... [2019-10-13 19:19:03,969 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:19:04,047 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:19:04,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:04,506 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:19:04,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:04,644 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:19:04,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04 WrapperNode [2019-10-13 19:19:04,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:04,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:19:04,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:19:04,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:19:04,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:19:04,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:19:04,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:19:04,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:19:04,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (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 [2019-10-13 19:19:04,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:19:04,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:19:04,830 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2019-10-13 19:19:04,830 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2019-10-13 19:19:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2019-10-13 19:19:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2019-10-13 19:19:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2019-10-13 19:19:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2019-10-13 19:19:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2019-10-13 19:19:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2019-10-13 19:19:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2019-10-13 19:19:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:19:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2019-10-13 19:19:04,833 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2019-10-13 19:19:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2019-10-13 19:19:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2019-10-13 19:19:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2019-10-13 19:19:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2019-10-13 19:19:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2019-10-13 19:19:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2019-10-13 19:19:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2019-10-13 19:19:04,837 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2019-10-13 19:19:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2019-10-13 19:19:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2019-10-13 19:19:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2019-10-13 19:19:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2019-10-13 19:19:04,838 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2019-10-13 19:19:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2019-10-13 19:19:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2019-10-13 19:19:04,839 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2019-10-13 19:19:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:19:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:19:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:19:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-13 19:19:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 19:19:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2019-10-13 19:19:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2019-10-13 19:19:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2019-10-13 19:19:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2019-10-13 19:19:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2019-10-13 19:19:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2019-10-13 19:19:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2019-10-13 19:19:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2019-10-13 19:19:04,841 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2019-10-13 19:19:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2019-10-13 19:19:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2019-10-13 19:19:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2019-10-13 19:19:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2019-10-13 19:19:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2019-10-13 19:19:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2019-10-13 19:19:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2019-10-13 19:19:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2019-10-13 19:19:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2019-10-13 19:19:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2019-10-13 19:19:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2019-10-13 19:19:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2019-10-13 19:19:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2019-10-13 19:19:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2019-10-13 19:19:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2019-10-13 19:19:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2019-10-13 19:19:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2019-10-13 19:19:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:19:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2019-10-13 19:19:04,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:19:04,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:19:05,189 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,262 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:05,263 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:05,271 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,280 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:05,281 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:05,286 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,576 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2019-10-13 19:19:05,576 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2019-10-13 19:19:05,579 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,711 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2019-10-13 19:19:05,712 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2019-10-13 19:19:05,738 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,769 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2019-10-13 19:19:05,769 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2019-10-13 19:19:05,881 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,890 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:05,890 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:05,890 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,898 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:05,899 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:05,899 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,908 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:05,908 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:05,946 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,978 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2019-10-13 19:19:05,978 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2019-10-13 19:19:05,981 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:06,131 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2019-10-13 19:19:06,131 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2019-10-13 19:19:06,182 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:06,189 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:06,189 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:06,190 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:06,207 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:06,208 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:06,208 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:06,217 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:06,217 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:06,229 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:19:06,230 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 19:19:06,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:06 BoogieIcfgContainer [2019-10-13 19:19:06,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:19:06,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:19:06,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:19:06,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:19:06,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:19:03" (1/3) ... [2019-10-13 19:19:06,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c18034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:06, skipping insertion in model container [2019-10-13 19:19:06,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (2/3) ... [2019-10-13 19:19:06,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c18034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:06, skipping insertion in model container [2019-10-13 19:19:06,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:06" (3/3) ... [2019-10-13 19:19:06,254 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.c [2019-10-13 19:19:06,267 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:19:06,277 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:19:06,289 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:19:06,334 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:19:06,334 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:19:06,334 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:19:06,334 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:19:06,335 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:19:06,336 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:19:06,336 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:19:06,336 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:19:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states. [2019-10-13 19:19:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:19:06,391 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:06,393 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] [2019-10-13 19:19:06,395 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:06,401 INFO L82 PathProgramCache]: Analyzing trace with hash 513471565, now seen corresponding path program 1 times [2019-10-13 19:19:06,409 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:06,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737063153] [2019-10-13 19:19:06,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:06,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:06,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:06,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737063153] [2019-10-13 19:19:06,939 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:06,940 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:19:06,940 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161372716] [2019-10-13 19:19:06,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:19:06,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:06,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:19:06,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:19:06,967 INFO L87 Difference]: Start difference. First operand 389 states. Second operand 5 states. [2019-10-13 19:19:08,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:08,806 INFO L93 Difference]: Finished difference Result 666 states and 978 transitions. [2019-10-13 19:19:08,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:08,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-13 19:19:08,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:08,826 INFO L225 Difference]: With dead ends: 666 [2019-10-13 19:19:08,827 INFO L226 Difference]: Without dead ends: 422 [2019-10-13 19:19:08,835 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 [2019-10-13 19:19:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2019-10-13 19:19:08,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 380. [2019-10-13 19:19:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-10-13 19:19:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 523 transitions. [2019-10-13 19:19:08,938 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 523 transitions. Word has length 20 [2019-10-13 19:19:08,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:08,939 INFO L462 AbstractCegarLoop]: Abstraction has 380 states and 523 transitions. [2019-10-13 19:19:08,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:19:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 523 transitions. [2019-10-13 19:19:08,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 19:19:08,941 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:08,941 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] [2019-10-13 19:19:08,941 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:08,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:08,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2120474792, now seen corresponding path program 1 times [2019-10-13 19:19:08,942 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:08,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831253218] [2019-10-13 19:19:08,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:08,943 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:08,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:09,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831253218] [2019-10-13 19:19:09,308 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:09,308 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:09,308 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954563147] [2019-10-13 19:19:09,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:09,310 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:09,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:09,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:09,311 INFO L87 Difference]: Start difference. First operand 380 states and 523 transitions. Second operand 6 states. [2019-10-13 19:19:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:11,710 INFO L93 Difference]: Finished difference Result 747 states and 1022 transitions. [2019-10-13 19:19:11,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:11,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-13 19:19:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:11,719 INFO L225 Difference]: With dead ends: 747 [2019-10-13 19:19:11,719 INFO L226 Difference]: Without dead ends: 584 [2019-10-13 19:19:11,721 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:19:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-10-13 19:19:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 525. [2019-10-13 19:19:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2019-10-13 19:19:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 716 transitions. [2019-10-13 19:19:11,788 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 716 transitions. Word has length 25 [2019-10-13 19:19:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:11,789 INFO L462 AbstractCegarLoop]: Abstraction has 525 states and 716 transitions. [2019-10-13 19:19:11,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 716 transitions. [2019-10-13 19:19:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 19:19:11,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:11,791 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] [2019-10-13 19:19:11,791 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:11,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:11,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1525052010, now seen corresponding path program 1 times [2019-10-13 19:19:11,792 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:11,793 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265534647] [2019-10-13 19:19:11,793 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:11,793 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:11,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:12,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:12,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265534647] [2019-10-13 19:19:12,124 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:12,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:12,125 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793827128] [2019-10-13 19:19:12,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:12,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:12,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:12,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:12,130 INFO L87 Difference]: Start difference. First operand 525 states and 716 transitions. Second operand 6 states. [2019-10-13 19:19:13,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:13,879 INFO L93 Difference]: Finished difference Result 695 states and 934 transitions. [2019-10-13 19:19:13,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:13,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-13 19:19:13,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:13,889 INFO L225 Difference]: With dead ends: 695 [2019-10-13 19:19:13,890 INFO L226 Difference]: Without dead ends: 676 [2019-10-13 19:19:13,891 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 [2019-10-13 19:19:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2019-10-13 19:19:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 583. [2019-10-13 19:19:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2019-10-13 19:19:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 790 transitions. [2019-10-13 19:19:13,955 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 790 transitions. Word has length 31 [2019-10-13 19:19:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:13,956 INFO L462 AbstractCegarLoop]: Abstraction has 583 states and 790 transitions. [2019-10-13 19:19:13,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 790 transitions. [2019-10-13 19:19:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-13 19:19:13,958 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:13,958 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] [2019-10-13 19:19:13,959 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:13,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:13,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1803096900, now seen corresponding path program 1 times [2019-10-13 19:19:13,959 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:13,960 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42211320] [2019-10-13 19:19:13,960 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:13,960 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:13,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:14,191 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42211320] [2019-10-13 19:19:14,192 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:14,192 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:14,192 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629281178] [2019-10-13 19:19:14,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:14,193 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:14,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:14,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:14,194 INFO L87 Difference]: Start difference. First operand 583 states and 790 transitions. Second operand 6 states. [2019-10-13 19:19:16,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:16,160 INFO L93 Difference]: Finished difference Result 1117 states and 1501 transitions. [2019-10-13 19:19:16,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:16,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-10-13 19:19:16,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:16,166 INFO L225 Difference]: With dead ends: 1117 [2019-10-13 19:19:16,166 INFO L226 Difference]: Without dead ends: 819 [2019-10-13 19:19:16,168 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 [2019-10-13 19:19:16,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2019-10-13 19:19:16,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 771. [2019-10-13 19:19:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2019-10-13 19:19:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1047 transitions. [2019-10-13 19:19:16,229 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1047 transitions. Word has length 33 [2019-10-13 19:19:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:16,230 INFO L462 AbstractCegarLoop]: Abstraction has 771 states and 1047 transitions. [2019-10-13 19:19:16,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1047 transitions. [2019-10-13 19:19:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 19:19:16,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:16,233 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] [2019-10-13 19:19:16,233 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:16,233 INFO L82 PathProgramCache]: Analyzing trace with hash -535412243, now seen corresponding path program 1 times [2019-10-13 19:19:16,234 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:16,234 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099755700] [2019-10-13 19:19:16,234 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:16,234 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:16,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:16,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099755700] [2019-10-13 19:19:16,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:16,433 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:19:16,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757197393] [2019-10-13 19:19:16,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:19:16,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:16,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:19:16,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:19:16,435 INFO L87 Difference]: Start difference. First operand 771 states and 1047 transitions. Second operand 8 states. [2019-10-13 19:19:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:18,037 INFO L93 Difference]: Finished difference Result 865 states and 1163 transitions. [2019-10-13 19:19:18,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:19:18,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-13 19:19:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:18,044 INFO L225 Difference]: With dead ends: 865 [2019-10-13 19:19:18,044 INFO L226 Difference]: Without dead ends: 860 [2019-10-13 19:19:18,045 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 [2019-10-13 19:19:18,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2019-10-13 19:19:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 808. [2019-10-13 19:19:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-10-13 19:19:18,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1090 transitions. [2019-10-13 19:19:18,119 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1090 transitions. Word has length 38 [2019-10-13 19:19:18,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:18,122 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1090 transitions. [2019-10-13 19:19:18,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:19:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1090 transitions. [2019-10-13 19:19:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 19:19:18,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:18,125 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] [2019-10-13 19:19:18,126 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:18,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1074736541, now seen corresponding path program 1 times [2019-10-13 19:19:18,126 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:18,127 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61004580] [2019-10-13 19:19:18,127 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:18,127 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:18,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:18,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61004580] [2019-10-13 19:19:18,336 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:18,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:18,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287929718] [2019-10-13 19:19:18,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:18,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:18,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:18,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:18,337 INFO L87 Difference]: Start difference. First operand 808 states and 1090 transitions. Second operand 6 states. [2019-10-13 19:19:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:20,234 INFO L93 Difference]: Finished difference Result 842 states and 1132 transitions. [2019-10-13 19:19:20,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:20,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-13 19:19:20,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:20,242 INFO L225 Difference]: With dead ends: 842 [2019-10-13 19:19:20,243 INFO L226 Difference]: Without dead ends: 839 [2019-10-13 19:19:20,243 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:19:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-10-13 19:19:20,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 819. [2019-10-13 19:19:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2019-10-13 19:19:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1104 transitions. [2019-10-13 19:19:20,331 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1104 transitions. Word has length 38 [2019-10-13 19:19:20,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:20,332 INFO L462 AbstractCegarLoop]: Abstraction has 819 states and 1104 transitions. [2019-10-13 19:19:20,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1104 transitions. [2019-10-13 19:19:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-13 19:19:20,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:20,333 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] [2019-10-13 19:19:20,336 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:20,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:20,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1325280387, now seen corresponding path program 1 times [2019-10-13 19:19:20,337 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:20,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705938728] [2019-10-13 19:19:20,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:20,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:20,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:20,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705938728] [2019-10-13 19:19:20,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:20,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:19:20,557 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708525016] [2019-10-13 19:19:20,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:19:20,558 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:20,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:19:20,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:20,558 INFO L87 Difference]: Start difference. First operand 819 states and 1104 transitions. Second operand 10 states. [2019-10-13 19:19:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:22,401 INFO L93 Difference]: Finished difference Result 882 states and 1184 transitions. [2019-10-13 19:19:22,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:19:22,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-10-13 19:19:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:22,406 INFO L225 Difference]: With dead ends: 882 [2019-10-13 19:19:22,406 INFO L226 Difference]: Without dead ends: 867 [2019-10-13 19:19:22,407 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 [2019-10-13 19:19:22,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2019-10-13 19:19:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 817. [2019-10-13 19:19:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2019-10-13 19:19:22,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1100 transitions. [2019-10-13 19:19:22,468 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1100 transitions. Word has length 40 [2019-10-13 19:19:22,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:22,468 INFO L462 AbstractCegarLoop]: Abstraction has 817 states and 1100 transitions. [2019-10-13 19:19:22,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:19:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1100 transitions. [2019-10-13 19:19:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-13 19:19:22,471 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:22,471 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] [2019-10-13 19:19:22,471 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1033738490, now seen corresponding path program 1 times [2019-10-13 19:19:22,472 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:22,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589627549] [2019-10-13 19:19:22,474 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:22,474 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:22,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:22,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589627549] [2019-10-13 19:19:22,688 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:22,688 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:19:22,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071935659] [2019-10-13 19:19:22,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:19:22,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:22,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:19:22,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:22,691 INFO L87 Difference]: Start difference. First operand 817 states and 1100 transitions. Second operand 10 states. [2019-10-13 19:19:25,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:25,111 INFO L93 Difference]: Finished difference Result 880 states and 1180 transitions. [2019-10-13 19:19:25,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:19:25,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2019-10-13 19:19:25,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:25,118 INFO L225 Difference]: With dead ends: 880 [2019-10-13 19:19:25,118 INFO L226 Difference]: Without dead ends: 860 [2019-10-13 19:19:25,119 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 [2019-10-13 19:19:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2019-10-13 19:19:25,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 810. [2019-10-13 19:19:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-10-13 19:19:25,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1091 transitions. [2019-10-13 19:19:25,174 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1091 transitions. Word has length 39 [2019-10-13 19:19:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:25,175 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1091 transitions. [2019-10-13 19:19:25,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:19:25,175 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1091 transitions. [2019-10-13 19:19:25,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-13 19:19:25,176 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:25,177 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] [2019-10-13 19:19:25,177 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:25,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:25,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1677893832, now seen corresponding path program 1 times [2019-10-13 19:19:25,177 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:25,178 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486874532] [2019-10-13 19:19:25,178 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:25,178 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:25,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:25,371 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486874532] [2019-10-13 19:19:25,372 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:25,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:19:25,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995123942] [2019-10-13 19:19:25,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:25,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:25,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:25,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:19:25,375 INFO L87 Difference]: Start difference. First operand 810 states and 1091 transitions. Second operand 7 states. [2019-10-13 19:19:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:28,052 INFO L93 Difference]: Finished difference Result 1192 states and 1615 transitions. [2019-10-13 19:19:28,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:19:28,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2019-10-13 19:19:28,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:28,060 INFO L225 Difference]: With dead ends: 1192 [2019-10-13 19:19:28,060 INFO L226 Difference]: Without dead ends: 1189 [2019-10-13 19:19:28,061 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 [2019-10-13 19:19:28,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2019-10-13 19:19:28,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 923. [2019-10-13 19:19:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2019-10-13 19:19:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1245 transitions. [2019-10-13 19:19:28,132 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1245 transitions. Word has length 44 [2019-10-13 19:19:28,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:28,133 INFO L462 AbstractCegarLoop]: Abstraction has 923 states and 1245 transitions. [2019-10-13 19:19:28,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:28,133 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1245 transitions. [2019-10-13 19:19:28,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 19:19:28,135 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:28,135 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] [2019-10-13 19:19:28,135 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:28,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:28,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2097381887, now seen corresponding path program 1 times [2019-10-13 19:19:28,136 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:28,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354480411] [2019-10-13 19:19:28,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:28,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:28,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:28,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354480411] [2019-10-13 19:19:28,465 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:28,466 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:19:28,466 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528114658] [2019-10-13 19:19:28,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:19:28,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:28,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:19:28,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:19:28,467 INFO L87 Difference]: Start difference. First operand 923 states and 1245 transitions. Second operand 13 states. [2019-10-13 19:19:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:32,736 INFO L93 Difference]: Finished difference Result 979 states and 1311 transitions. [2019-10-13 19:19:32,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:19:32,740 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2019-10-13 19:19:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:32,750 INFO L225 Difference]: With dead ends: 979 [2019-10-13 19:19:32,751 INFO L226 Difference]: Without dead ends: 973 [2019-10-13 19:19:32,755 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 [2019-10-13 19:19:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-13 19:19:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 923. [2019-10-13 19:19:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2019-10-13 19:19:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1244 transitions. [2019-10-13 19:19:32,870 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1244 transitions. Word has length 43 [2019-10-13 19:19:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:32,870 INFO L462 AbstractCegarLoop]: Abstraction has 923 states and 1244 transitions. [2019-10-13 19:19:32,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:19:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1244 transitions. [2019-10-13 19:19:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 19:19:32,875 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:32,875 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] [2019-10-13 19:19:32,875 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:32,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:32,876 INFO L82 PathProgramCache]: Analyzing trace with hash 667497540, now seen corresponding path program 1 times [2019-10-13 19:19:32,876 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:32,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296364509] [2019-10-13 19:19:32,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:32,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:32,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:33,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296364509] [2019-10-13 19:19:33,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:33,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:19:33,220 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446488648] [2019-10-13 19:19:33,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:19:33,221 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:33,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:19:33,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:19:33,223 INFO L87 Difference]: Start difference. First operand 923 states and 1244 transitions. Second operand 8 states. [2019-10-13 19:19:33,732 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-10-13 19:19:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:36,279 INFO L93 Difference]: Finished difference Result 970 states and 1299 transitions. [2019-10-13 19:19:36,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:19:36,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-10-13 19:19:36,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:36,285 INFO L225 Difference]: With dead ends: 970 [2019-10-13 19:19:36,285 INFO L226 Difference]: Without dead ends: 948 [2019-10-13 19:19:36,287 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 [2019-10-13 19:19:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2019-10-13 19:19:36,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 925. [2019-10-13 19:19:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2019-10-13 19:19:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1246 transitions. [2019-10-13 19:19:36,366 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1246 transitions. Word has length 42 [2019-10-13 19:19:36,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:36,367 INFO L462 AbstractCegarLoop]: Abstraction has 925 states and 1246 transitions. [2019-10-13 19:19:36,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:19:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1246 transitions. [2019-10-13 19:19:36,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-13 19:19:36,369 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:36,369 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] [2019-10-13 19:19:36,369 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:36,369 INFO L82 PathProgramCache]: Analyzing trace with hash 237043572, now seen corresponding path program 1 times [2019-10-13 19:19:36,370 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:36,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309277579] [2019-10-13 19:19:36,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:36,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:36,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:36,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309277579] [2019-10-13 19:19:36,651 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:36,652 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:19:36,652 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334717778] [2019-10-13 19:19:36,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:19:36,653 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:19:36,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:36,654 INFO L87 Difference]: Start difference. First operand 925 states and 1246 transitions. Second operand 11 states. [2019-10-13 19:19:36,940 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83