java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:18:51,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:18:51,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:18:51,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:18:51,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:18:51,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:18:51,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:18:51,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:18:51,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:18:51,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:18:51,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:18:51,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:18:51,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:18:51,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:18:51,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:18:51,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:18:51,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:18:51,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:18:51,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:18:51,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:18:51,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:18:51,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:18:51,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:18:51,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:18:51,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:18:51,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:18:51,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:18:51,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:18:51,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:18:51,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:18:51,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:18:51,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:18:51,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:18:51,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:18:51,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:18:51,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:18:51,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:18:51,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:18:51,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:18:51,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:18:51,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:18:51,602 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 19:18:51,615 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:18:51,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:18:51,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:18:51,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:18:51,617 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:18:51,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:18:51,618 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:18:51,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:18:51,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:18:51,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:18:51,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:18:51,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:18:51,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:18:51,619 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:18:51,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:18:51,619 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:18:51,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:18:51,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:18:51,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:18:51,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:18:51,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:18:51,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:18:51,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:18:51,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:18:51,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:18:51,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:18:51,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:18:51,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:18:51,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:18:51,887 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:18:51,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:18:51,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:18:51,908 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:18:51,909 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:18:51,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2019-10-13 19:18:51,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c4c23ee/5cdf8dee728f48a4b88b15797b23f2ff/FLAGea6499816 [2019-10-13 19:18:52,559 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:18:52,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2019-10-13 19:18:52,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c4c23ee/5cdf8dee728f48a4b88b15797b23f2ff/FLAGea6499816 [2019-10-13 19:18:52,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c4c23ee/5cdf8dee728f48a4b88b15797b23f2ff [2019-10-13 19:18:52,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:18:52,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:18:52,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:18:52,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:18:52,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:18:52,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:18:52" (1/1) ... [2019-10-13 19:18:52,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5e897f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:52, skipping insertion in model container [2019-10-13 19:18:52,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:18:52" (1/1) ... [2019-10-13 19:18:52,886 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:18:52,944 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:18:53,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:18:53,340 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:18:53,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:18:53,487 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:18:53,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:53 WrapperNode [2019-10-13 19:18:53,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:18:53,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:18:53,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:18:53,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:18:53,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:53" (1/1) ... [2019-10-13 19:18:53,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:53" (1/1) ... [2019-10-13 19:18:53,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:53" (1/1) ... [2019-10-13 19:18:53,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:53" (1/1) ... [2019-10-13 19:18:53,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:53" (1/1) ... [2019-10-13 19:18:53,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:53" (1/1) ... [2019-10-13 19:18:53,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:53" (1/1) ... [2019-10-13 19:18:53,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:18:53,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:18:53,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:18:53,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:18:53,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:18:53,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:18:53,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:18:53,657 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2019-10-13 19:18:53,657 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2019-10-13 19:18:53,658 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2019-10-13 19:18:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2019-10-13 19:18:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2019-10-13 19:18:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2019-10-13 19:18:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2019-10-13 19:18:53,659 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2019-10-13 19:18:53,660 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2019-10-13 19:18:53,660 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2019-10-13 19:18:53,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:18:53,661 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2019-10-13 19:18:53,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2019-10-13 19:18:53,662 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2019-10-13 19:18:53,664 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2019-10-13 19:18:53,664 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2019-10-13 19:18:53,665 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2019-10-13 19:18:53,665 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2019-10-13 19:18:53,665 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2019-10-13 19:18:53,665 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2019-10-13 19:18:53,665 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2019-10-13 19:18:53,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2019-10-13 19:18:53,666 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2019-10-13 19:18:53,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2019-10-13 19:18:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:18:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:18:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:18:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-13 19:18:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 19:18:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2019-10-13 19:18:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2019-10-13 19:18:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2019-10-13 19:18:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2019-10-13 19:18:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2019-10-13 19:18:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2019-10-13 19:18:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2019-10-13 19:18:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2019-10-13 19:18:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2019-10-13 19:18:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2019-10-13 19:18:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2019-10-13 19:18:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2019-10-13 19:18:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2019-10-13 19:18:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2019-10-13 19:18:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2019-10-13 19:18:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2019-10-13 19:18:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2019-10-13 19:18:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2019-10-13 19:18:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2019-10-13 19:18:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2019-10-13 19:18:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2019-10-13 19:18:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2019-10-13 19:18:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:18:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2019-10-13 19:18:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:18:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:18:53,990 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,059 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:18:54,060 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:18:54,069 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,081 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:18:54,081 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:18:54,103 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,348 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2019-10-13 19:18:54,348 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2019-10-13 19:18:54,351 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,467 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2019-10-13 19:18:54,467 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2019-10-13 19:18:54,477 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,495 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2019-10-13 19:18:54,496 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2019-10-13 19:18:54,637 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,665 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:18:54,665 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:18:54,666 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,681 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:18:54,682 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:18:54,683 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,707 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:18:54,707 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:18:54,772 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,830 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2019-10-13 19:18:54,830 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2019-10-13 19:18:54,853 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,859 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:18:54,860 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:18:54,860 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,868 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:18:54,868 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:18:54,869 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:18:54,875 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:18:54,875 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:18:54,885 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:18:54,885 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 19:18:54,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:18:54 BoogieIcfgContainer [2019-10-13 19:18:54,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:18:54,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:18:54,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:18:54,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:18:54,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:18:52" (1/3) ... [2019-10-13 19:18:54,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad57a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:18:54, skipping insertion in model container [2019-10-13 19:18:54,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:53" (2/3) ... [2019-10-13 19:18:54,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad57a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:18:54, skipping insertion in model container [2019-10-13 19:18:54,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:18:54" (3/3) ... [2019-10-13 19:18:54,896 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2019-10-13 19:18:54,906 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:18:54,915 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:18:54,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:18:54,958 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:18:54,958 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:18:54,958 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:18:54,959 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:18:54,959 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:18:54,959 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:18:54,959 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:18:54,959 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:18:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2019-10-13 19:18:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:18:54,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:18:54,995 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 19:18:54,998 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:18:55,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:18:55,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1935172457, now seen corresponding path program 1 times [2019-10-13 19:18:55,013 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:18:55,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881775126] [2019-10-13 19:18:55,014 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:18:55,014 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:18:55,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:18:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:55,450 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 19:18:55,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881775126] [2019-10-13 19:18:55,452 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:18:55,452 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:18:55,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571735177] [2019-10-13 19:18:55,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:18:55,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:18:55,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:18:55,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:18:55,474 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 5 states. [2019-10-13 19:18:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:18:57,013 INFO L93 Difference]: Finished difference Result 540 states and 783 transitions. [2019-10-13 19:18:57,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:18:57,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-13 19:18:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:18:57,035 INFO L225 Difference]: With dead ends: 540 [2019-10-13 19:18:57,035 INFO L226 Difference]: Without dead ends: 324 [2019-10-13 19:18:57,042 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 19:18:57,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2019-10-13 19:18:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 294. [2019-10-13 19:18:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-13 19:18:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 388 transitions. [2019-10-13 19:18:57,166 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 388 transitions. Word has length 20 [2019-10-13 19:18:57,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:18:57,167 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 388 transitions. [2019-10-13 19:18:57,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:18:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 388 transitions. [2019-10-13 19:18:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 19:18:57,169 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:18:57,169 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:18:57,169 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:18:57,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:18:57,171 INFO L82 PathProgramCache]: Analyzing trace with hash -657914795, now seen corresponding path program 1 times [2019-10-13 19:18:57,171 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:18:57,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396503345] [2019-10-13 19:18:57,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:18:57,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:18:57,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:18:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:18:57,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396503345] [2019-10-13 19:18:57,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:18:57,567 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:18:57,567 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684584423] [2019-10-13 19:18:57,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:18:57,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:18:57,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:18:57,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:18:57,570 INFO L87 Difference]: Start difference. First operand 294 states and 388 transitions. Second operand 7 states. [2019-10-13 19:19:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:00,197 INFO L93 Difference]: Finished difference Result 854 states and 1136 transitions. [2019-10-13 19:19:00,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:19:00,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-10-13 19:19:00,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:00,205 INFO L225 Difference]: With dead ends: 854 [2019-10-13 19:19:00,205 INFO L226 Difference]: Without dead ends: 581 [2019-10-13 19:19:00,209 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2019-10-13 19:19:00,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 383. [2019-10-13 19:19:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2019-10-13 19:19:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 500 transitions. [2019-10-13 19:19:00,268 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 500 transitions. Word has length 28 [2019-10-13 19:19:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:00,268 INFO L462 AbstractCegarLoop]: Abstraction has 383 states and 500 transitions. [2019-10-13 19:19:00,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 500 transitions. [2019-10-13 19:19:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 19:19:00,270 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:00,270 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:00,270 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:00,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:00,271 INFO L82 PathProgramCache]: Analyzing trace with hash 151431831, now seen corresponding path program 1 times [2019-10-13 19:19:00,271 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:00,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639176742] [2019-10-13 19:19:00,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:00,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:00,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:00,559 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 19:19:00,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639176742] [2019-10-13 19:19:00,559 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:00,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:00,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271905947] [2019-10-13 19:19:00,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:00,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:00,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:00,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:00,562 INFO L87 Difference]: Start difference. First operand 383 states and 500 transitions. Second operand 6 states. [2019-10-13 19:19:02,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:02,614 INFO L93 Difference]: Finished difference Result 764 states and 1021 transitions. [2019-10-13 19:19:02,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:02,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-10-13 19:19:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:02,620 INFO L225 Difference]: With dead ends: 764 [2019-10-13 19:19:02,620 INFO L226 Difference]: Without dead ends: 601 [2019-10-13 19:19:02,621 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 [2019-10-13 19:19:02,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2019-10-13 19:19:02,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 526. [2019-10-13 19:19:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-13 19:19:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 689 transitions. [2019-10-13 19:19:02,697 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 689 transitions. Word has length 28 [2019-10-13 19:19:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:02,697 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 689 transitions. [2019-10-13 19:19:02,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 689 transitions. [2019-10-13 19:19:02,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 19:19:02,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:02,699 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:02,699 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:02,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:02,700 INFO L82 PathProgramCache]: Analyzing trace with hash -523056827, now seen corresponding path program 1 times [2019-10-13 19:19:02,700 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:02,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22524606] [2019-10-13 19:19:02,700 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:02,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:02,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:02,921 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 19:19:02,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22524606] [2019-10-13 19:19:02,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:02,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:02,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707215001] [2019-10-13 19:19:02,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:02,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:02,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:02,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:02,925 INFO L87 Difference]: Start difference. First operand 526 states and 689 transitions. Second operand 6 states. [2019-10-13 19:19:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:04,588 INFO L93 Difference]: Finished difference Result 1082 states and 1431 transitions. [2019-10-13 19:19:04,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:04,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-13 19:19:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:04,601 INFO L225 Difference]: With dead ends: 1082 [2019-10-13 19:19:04,602 INFO L226 Difference]: Without dead ends: 775 [2019-10-13 19:19:04,605 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 19:19:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2019-10-13 19:19:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 714. [2019-10-13 19:19:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2019-10-13 19:19:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 946 transitions. [2019-10-13 19:19:04,682 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 946 transitions. Word has length 30 [2019-10-13 19:19:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:04,682 INFO L462 AbstractCegarLoop]: Abstraction has 714 states and 946 transitions. [2019-10-13 19:19:04,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 946 transitions. [2019-10-13 19:19:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-13 19:19:04,684 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:04,684 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:04,684 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:04,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:04,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1040933871, now seen corresponding path program 1 times [2019-10-13 19:19:04,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:04,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533752369] [2019-10-13 19:19:04,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:04,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:04,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:04,861 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 19:19:04,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533752369] [2019-10-13 19:19:04,861 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:04,862 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:04,862 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789388826] [2019-10-13 19:19:04,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:04,863 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:04,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:04,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:04,864 INFO L87 Difference]: Start difference. First operand 714 states and 946 transitions. Second operand 6 states. [2019-10-13 19:19:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:06,028 INFO L93 Difference]: Finished difference Result 890 states and 1167 transitions. [2019-10-13 19:19:06,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:06,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-10-13 19:19:06,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:06,037 INFO L225 Difference]: With dead ends: 890 [2019-10-13 19:19:06,037 INFO L226 Difference]: Without dead ends: 870 [2019-10-13 19:19:06,038 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 19:19:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-10-13 19:19:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 803. [2019-10-13 19:19:06,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-10-13 19:19:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1061 transitions. [2019-10-13 19:19:06,129 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1061 transitions. Word has length 34 [2019-10-13 19:19:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:06,130 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1061 transitions. [2019-10-13 19:19:06,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1061 transitions. [2019-10-13 19:19:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-13 19:19:06,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:06,133 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:06,133 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:06,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1618645229, now seen corresponding path program 1 times [2019-10-13 19:19:06,134 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:06,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789565106] [2019-10-13 19:19:06,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:06,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:06,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,455 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 19:19:06,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789565106] [2019-10-13 19:19:06,455 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:06,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:19:06,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411873352] [2019-10-13 19:19:06,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:06,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:06,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:06,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:19:06,457 INFO L87 Difference]: Start difference. First operand 803 states and 1061 transitions. Second operand 7 states. [2019-10-13 19:19:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:08,609 INFO L93 Difference]: Finished difference Result 1191 states and 1597 transitions. [2019-10-13 19:19:08,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:19:08,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-10-13 19:19:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:08,616 INFO L225 Difference]: With dead ends: 1191 [2019-10-13 19:19:08,616 INFO L226 Difference]: Without dead ends: 1188 [2019-10-13 19:19:08,616 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2019-10-13 19:19:08,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 918. [2019-10-13 19:19:08,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2019-10-13 19:19:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1219 transitions. [2019-10-13 19:19:08,707 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1219 transitions. Word has length 41 [2019-10-13 19:19:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:08,708 INFO L462 AbstractCegarLoop]: Abstraction has 918 states and 1219 transitions. [2019-10-13 19:19:08,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:08,708 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1219 transitions. [2019-10-13 19:19:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-13 19:19:08,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:08,710 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 19:19:08,711 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:08,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1801190041, now seen corresponding path program 1 times [2019-10-13 19:19:08,711 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:08,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766506883] [2019-10-13 19:19:08,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:08,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:08,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:08,896 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 19:19:08,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766506883] [2019-10-13 19:19:08,897 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:08,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:08,897 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395551242] [2019-10-13 19:19:08,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:08,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:08,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:08,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:08,899 INFO L87 Difference]: Start difference. First operand 918 states and 1219 transitions. Second operand 6 states. [2019-10-13 19:19:10,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:10,303 INFO L93 Difference]: Finished difference Result 961 states and 1272 transitions. [2019-10-13 19:19:10,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:10,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2019-10-13 19:19:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:10,311 INFO L225 Difference]: With dead ends: 961 [2019-10-13 19:19:10,312 INFO L226 Difference]: Without dead ends: 958 [2019-10-13 19:19:10,313 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 [2019-10-13 19:19:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2019-10-13 19:19:10,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 929. [2019-10-13 19:19:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2019-10-13 19:19:10,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1231 transitions. [2019-10-13 19:19:10,392 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1231 transitions. Word has length 40 [2019-10-13 19:19:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:10,393 INFO L462 AbstractCegarLoop]: Abstraction has 929 states and 1231 transitions. [2019-10-13 19:19:10,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1231 transitions. [2019-10-13 19:19:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-13 19:19:10,395 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:10,395 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:10,395 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:10,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:10,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2006089857, now seen corresponding path program 1 times [2019-10-13 19:19:10,396 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:10,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252393538] [2019-10-13 19:19:10,396 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:10,396 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:10,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:10,639 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 19:19:10,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252393538] [2019-10-13 19:19:10,640 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:10,640 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:19:10,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117830717] [2019-10-13 19:19:10,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:19:10,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:10,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:19:10,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:19:10,642 INFO L87 Difference]: Start difference. First operand 929 states and 1231 transitions. Second operand 8 states. [2019-10-13 19:19:12,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:12,185 INFO L93 Difference]: Finished difference Result 1030 states and 1355 transitions. [2019-10-13 19:19:12,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:19:12,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2019-10-13 19:19:12,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:12,193 INFO L225 Difference]: With dead ends: 1030 [2019-10-13 19:19:12,193 INFO L226 Difference]: Without dead ends: 1025 [2019-10-13 19:19:12,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:19:12,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2019-10-13 19:19:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 974. [2019-10-13 19:19:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2019-10-13 19:19:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1285 transitions. [2019-10-13 19:19:12,273 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1285 transitions. Word has length 41 [2019-10-13 19:19:12,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:12,274 INFO L462 AbstractCegarLoop]: Abstraction has 974 states and 1285 transitions. [2019-10-13 19:19:12,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:19:12,274 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1285 transitions. [2019-10-13 19:19:12,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 19:19:12,276 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:12,276 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 19:19:12,276 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:12,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:12,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1123776538, now seen corresponding path program 1 times [2019-10-13 19:19:12,277 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:12,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471959049] [2019-10-13 19:19:12,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:12,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:12,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:12,524 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 19:19:12,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471959049] [2019-10-13 19:19:12,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:12,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:19:12,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157098106] [2019-10-13 19:19:12,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:19:12,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:12,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:19:12,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:12,528 INFO L87 Difference]: Start difference. First operand 974 states and 1285 transitions. Second operand 11 states. [2019-10-13 19:19:12,802 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2019-10-13 19:19:15,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:15,316 INFO L93 Difference]: Finished difference Result 1818 states and 2385 transitions. [2019-10-13 19:19:15,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:19:15,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2019-10-13 19:19:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:15,324 INFO L225 Difference]: With dead ends: 1818 [2019-10-13 19:19:15,325 INFO L226 Difference]: Without dead ends: 1184 [2019-10-13 19:19:15,327 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:19:15,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2019-10-13 19:19:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 959. [2019-10-13 19:19:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-13 19:19:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1250 transitions. [2019-10-13 19:19:15,442 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1250 transitions. Word has length 42 [2019-10-13 19:19:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:15,443 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1250 transitions. [2019-10-13 19:19:15,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:19:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1250 transitions. [2019-10-13 19:19:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 19:19:15,444 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:15,445 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 19:19:15,445 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:15,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:15,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1606408613, now seen corresponding path program 1 times [2019-10-13 19:19:15,445 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:15,446 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522929700] [2019-10-13 19:19:15,446 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:15,446 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:15,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:15,747 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 19:19:15,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522929700] [2019-10-13 19:19:15,747 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:15,748 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:19:15,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817924378] [2019-10-13 19:19:15,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:19:15,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:15,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:19:15,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:19:15,749 INFO L87 Difference]: Start difference. First operand 959 states and 1250 transitions. Second operand 13 states. [2019-10-13 19:19:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:17,924 INFO L93 Difference]: Finished difference Result 1033 states and 1338 transitions. [2019-10-13 19:19:17,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:19:17,929 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2019-10-13 19:19:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:17,934 INFO L225 Difference]: With dead ends: 1033 [2019-10-13 19:19:17,934 INFO L226 Difference]: Without dead ends: 1024 [2019-10-13 19:19:17,935 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:19:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-10-13 19:19:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 959. [2019-10-13 19:19:18,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-13 19:19:18,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1248 transitions. [2019-10-13 19:19:18,015 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1248 transitions. Word has length 42 [2019-10-13 19:19:18,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:18,015 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1248 transitions. [2019-10-13 19:19:18,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:19:18,015 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1248 transitions. [2019-10-13 19:19:18,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 19:19:18,016 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:18,017 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 19:19:18,017 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:18,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:18,017 INFO L82 PathProgramCache]: Analyzing trace with hash 851921771, now seen corresponding path program 1 times [2019-10-13 19:19:18,017 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:18,017 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535787499] [2019-10-13 19:19:18,018 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:18,018 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:18,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,226 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 19:19:18,289 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 19:19:18,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535787499] [2019-10-13 19:19:18,290 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:18,290 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:19:18,290 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916958463] [2019-10-13 19:19:18,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:19:18,291 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:18,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:19:18,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:19:18,291 INFO L87 Difference]: Start difference. First operand 959 states and 1248 transitions. Second operand 13 states. [2019-10-13 19:19:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:21,052 INFO L93 Difference]: Finished difference Result 1033 states and 1335 transitions. [2019-10-13 19:19:21,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:19:21,052 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2019-10-13 19:19:21,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:21,058 INFO L225 Difference]: With dead ends: 1033 [2019-10-13 19:19:21,058 INFO L226 Difference]: Without dead ends: 1024 [2019-10-13 19:19:21,059 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:19:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2019-10-13 19:19:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 959. [2019-10-13 19:19:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-13 19:19:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1246 transitions. [2019-10-13 19:19:21,150 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1246 transitions. Word has length 43 [2019-10-13 19:19:21,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:21,150 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1246 transitions. [2019-10-13 19:19:21,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:19:21,151 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1246 transitions. [2019-10-13 19:19:21,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-13 19:19:21,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:21,152 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 19:19:21,152 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:21,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:21,153 INFO L82 PathProgramCache]: Analyzing trace with hash 694919684, now seen corresponding path program 1 times [2019-10-13 19:19:21,153 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:21,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626022160] [2019-10-13 19:19:21,153 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:21,153 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:21,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:21,400 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 19:19:21,400 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626022160] [2019-10-13 19:19:21,400 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:21,401 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:19:21,401 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104599927] [2019-10-13 19:19:21,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:19:21,401 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:21,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:19:21,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:21,402 INFO L87 Difference]: Start difference. First operand 959 states and 1246 transitions. Second operand 10 states. [2019-10-13 19:19:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:22,682 INFO L93 Difference]: Finished difference Result 1022 states and 1321 transitions. [2019-10-13 19:19:22,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:19:22,682 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2019-10-13 19:19:22,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:22,691 INFO L225 Difference]: With dead ends: 1022 [2019-10-13 19:19:22,691 INFO L226 Difference]: Without dead ends: 1004 [2019-10-13 19:19:22,693 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:22,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2019-10-13 19:19:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 957. [2019-10-13 19:19:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2019-10-13 19:19:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1242 transitions. [2019-10-13 19:19:22,829 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1242 transitions. Word has length 44 [2019-10-13 19:19:22,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:22,831 INFO L462 AbstractCegarLoop]: Abstraction has 957 states and 1242 transitions. [2019-10-13 19:19:22,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:19:22,831 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1242 transitions. [2019-10-13 19:19:22,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 19:19:22,834 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:22,834 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:22,834 INFO L410 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:22,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:22,835 INFO L82 PathProgramCache]: Analyzing trace with hash -357671628, now seen corresponding path program 1 times [2019-10-13 19:19:22,835 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:22,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290140267] [2019-10-13 19:19:22,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:22,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:22,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,125 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 19:19:23,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290140267] [2019-10-13 19:19:23,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:23,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:19:23,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292649071] [2019-10-13 19:19:23,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:19:23,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:23,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:19:23,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:19:23,130 INFO L87 Difference]: Start difference. First operand 957 states and 1242 transitions. Second operand 8 states. [2019-10-13 19:19:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:25,788 INFO L93 Difference]: Finished difference Result 1076 states and 1365 transitions. [2019-10-13 19:19:25,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:19:25,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2019-10-13 19:19:25,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:25,794 INFO L225 Difference]: With dead ends: 1076 [2019-10-13 19:19:25,794 INFO L226 Difference]: Without dead ends: 737 [2019-10-13 19:19:25,797 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:19:25,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-10-13 19:19:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 665. [2019-10-13 19:19:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2019-10-13 19:19:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 831 transitions. [2019-10-13 19:19:25,930 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 831 transitions. Word has length 49 [2019-10-13 19:19:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:25,931 INFO L462 AbstractCegarLoop]: Abstraction has 665 states and 831 transitions. [2019-10-13 19:19:25,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:19:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 831 transitions. [2019-10-13 19:19:25,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 19:19:25,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:25,934 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:25,934 INFO L410 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:25,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:25,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2127211001, now seen corresponding path program 1 times [2019-10-13 19:19:25,935 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:25,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665138082] [2019-10-13 19:19:25,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:25,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:25,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,244 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 19:19:26,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665138082] [2019-10-13 19:19:26,245 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:26,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:19:26,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238278171] [2019-10-13 19:19:26,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:19:26,246 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:26,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:19:26,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:19:26,248 INFO L87 Difference]: Start difference. First operand 665 states and 831 transitions. Second operand 8 states. [2019-10-13 19:19:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:27,403 INFO L93 Difference]: Finished difference Result 991 states and 1248 transitions. [2019-10-13 19:19:27,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:19:27,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-13 19:19:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:27,411 INFO L225 Difference]: With dead ends: 991 [2019-10-13 19:19:27,411 INFO L226 Difference]: Without dead ends: 726 [2019-10-13 19:19:27,412 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2019-10-13 19:19:27,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 679. [2019-10-13 19:19:27,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-13 19:19:27,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 851 transitions. [2019-10-13 19:19:27,474 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 851 transitions. Word has length 58 [2019-10-13 19:19:27,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:27,474 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 851 transitions. [2019-10-13 19:19:27,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:19:27,475 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 851 transitions. [2019-10-13 19:19:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:19:27,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:27,476 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:27,477 INFO L410 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:27,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1957781293, now seen corresponding path program 1 times [2019-10-13 19:19:27,477 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:27,477 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818743639] [2019-10-13 19:19:27,478 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:27,478 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:27,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:27,674 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 19:19:27,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818743639] [2019-10-13 19:19:27,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:27,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:19:27,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38597067] [2019-10-13 19:19:27,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:19:27,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:27,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:19:27,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:19:27,677 INFO L87 Difference]: Start difference. First operand 679 states and 851 transitions. Second operand 8 states.