java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:19:02,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:19:02,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:19:02,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:19:02,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:19:02,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:19:02,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:19:02,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:19:02,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:19:02,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:19:02,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:19:02,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:19:02,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:19:02,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:19:02,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:19:02,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:19:02,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:19:02,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:19:02,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:19:02,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:19:02,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:19:02,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:19:02,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:19:02,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:19:02,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:19:02,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:19:02,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:19:02,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:19:02,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:19:02,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:19:02,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:19:02,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:19:02,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:19:02,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:19:02,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:19:02,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:19:02,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:19:02,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:19:02,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:19:02,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:19:02,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:19:02,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:19:02,667 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:19:02,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:19:02,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:19:02,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:19:02,670 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:19:02,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:19:02,671 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:19:02,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:19:02,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:19:02,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:19:02,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:19:02,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:19:02,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:19:02,673 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:19:02,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:19:02,673 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:19:02,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:19:02,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:19:02,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:19:02,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:19:02,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:19:02,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:02,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:19:02,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:19:02,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:19:02,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:19:02,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:19:02,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:19:02,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:19:02,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:19:02,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:19:02,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:19:02,982 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:19:02,982 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:19:02,983 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2019-10-13 19:19:03,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d417d213/05543f51072c45c3a77c13fea5d30bee/FLAG5b75a8ecc [2019-10-13 19:19:03,661 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:19:03,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2019-10-13 19:19:03,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d417d213/05543f51072c45c3a77c13fea5d30bee/FLAG5b75a8ecc [2019-10-13 19:19:03,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d417d213/05543f51072c45c3a77c13fea5d30bee [2019-10-13 19:19:03,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:19:03,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:19:03,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:03,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:19:03,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:19:03,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:03" (1/1) ... [2019-10-13 19:19:03,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cce3650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:03, skipping insertion in model container [2019-10-13 19:19:03,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:03" (1/1) ... [2019-10-13 19:19:03,934 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:19:04,014 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:19:04,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:04,443 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:19:04,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:04,605 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:19:04,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04 WrapperNode [2019-10-13 19:19:04,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:04,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:19:04,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:19:04,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:19:04,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... [2019-10-13 19:19:04,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:19:04,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:19:04,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:19:04,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:19:04,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:19:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:19:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2019-10-13 19:19:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2019-10-13 19:19:04,817 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2019-10-13 19:19:04,818 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2019-10-13 19:19:04,818 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2019-10-13 19:19:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2019-10-13 19:19:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2019-10-13 19:19:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2019-10-13 19:19:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2019-10-13 19:19:04,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:19:04,820 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2019-10-13 19:19:04,820 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2019-10-13 19:19:04,821 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2019-10-13 19:19:04,821 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2019-10-13 19:19:04,823 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2019-10-13 19:19:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2019-10-13 19:19:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2019-10-13 19:19:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2019-10-13 19:19:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2019-10-13 19:19:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2019-10-13 19:19:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2019-10-13 19:19:04,824 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2019-10-13 19:19:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2019-10-13 19:19:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2019-10-13 19:19:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2019-10-13 19:19:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2019-10-13 19:19:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2019-10-13 19:19:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2019-10-13 19:19:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:19:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:19:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:19:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-13 19:19:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 19:19:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2019-10-13 19:19:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2019-10-13 19:19:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2019-10-13 19:19:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2019-10-13 19:19:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2019-10-13 19:19:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2019-10-13 19:19:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2019-10-13 19:19:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2019-10-13 19:19:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2019-10-13 19:19:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2019-10-13 19:19:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2019-10-13 19:19:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2019-10-13 19:19:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2019-10-13 19:19:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2019-10-13 19:19:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2019-10-13 19:19:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2019-10-13 19:19:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2019-10-13 19:19:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2019-10-13 19:19:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2019-10-13 19:19:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2019-10-13 19:19:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2019-10-13 19:19:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2019-10-13 19:19:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2019-10-13 19:19:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2019-10-13 19:19:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2019-10-13 19:19:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2019-10-13 19:19:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:19:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2019-10-13 19:19:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:19:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:19:05,145 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,206 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:05,207 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:05,218 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,229 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:05,229 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:05,236 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,552 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2019-10-13 19:19:05,552 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2019-10-13 19:19:05,554 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,676 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2019-10-13 19:19:05,677 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2019-10-13 19:19:05,703 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,731 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2019-10-13 19:19:05,731 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2019-10-13 19:19:05,865 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,877 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:05,877 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:05,878 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,890 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:05,891 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:05,891 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,901 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:05,901 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:05,945 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:05,972 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2019-10-13 19:19:05,973 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2019-10-13 19:19:05,976 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:06,090 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2019-10-13 19:19:06,090 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2019-10-13 19:19:06,135 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:06,141 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:06,141 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:06,142 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:06,151 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:06,151 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:06,152 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-13 19:19:06,161 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-13 19:19:06,161 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-13 19:19:06,172 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:19:06,172 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 19:19:06,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:06 BoogieIcfgContainer [2019-10-13 19:19:06,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:19:06,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:19:06,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:19:06,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:19:06,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:19:03" (1/3) ... [2019-10-13 19:19:06,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611194e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:06, skipping insertion in model container [2019-10-13 19:19:06,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:04" (2/3) ... [2019-10-13 19:19:06,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611194e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:06, skipping insertion in model container [2019-10-13 19:19:06,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:06" (3/3) ... [2019-10-13 19:19:06,182 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2019-10-13 19:19:06,191 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:19:06,200 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:19:06,211 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:19:06,240 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:19:06,240 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:19:06,241 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:19:06,241 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:19:06,241 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:19:06,241 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:19:06,241 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:19:06,241 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:19:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states. [2019-10-13 19:19:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:19:06,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:06,286 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:06,288 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1980583479, now seen corresponding path program 1 times [2019-10-13 19:19:06,301 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:06,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934919195] [2019-10-13 19:19:06,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:06,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:06,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:06,771 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 19:19:06,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934919195] [2019-10-13 19:19:06,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:06,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:19:06,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136029053] [2019-10-13 19:19:06,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:19:06,781 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:06,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:19:06,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:19:06,798 INFO L87 Difference]: Start difference. First operand 390 states. Second operand 5 states. [2019-10-13 19:19:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:08,527 INFO L93 Difference]: Finished difference Result 668 states and 982 transitions. [2019-10-13 19:19:08,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:08,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-13 19:19:08,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:08,556 INFO L225 Difference]: With dead ends: 668 [2019-10-13 19:19:08,556 INFO L226 Difference]: Without dead ends: 424 [2019-10-13 19:19:08,572 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:19:08,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-10-13 19:19:08,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 382. [2019-10-13 19:19:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2019-10-13 19:19:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 526 transitions. [2019-10-13 19:19:08,703 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 526 transitions. Word has length 20 [2019-10-13 19:19:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:08,704 INFO L462 AbstractCegarLoop]: Abstraction has 382 states and 526 transitions. [2019-10-13 19:19:08,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:19:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 526 transitions. [2019-10-13 19:19:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 19:19:08,707 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:08,707 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:08,707 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1877533292, now seen corresponding path program 1 times [2019-10-13 19:19:08,709 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:08,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010820698] [2019-10-13 19:19:08,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:08,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:08,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:09,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010820698] [2019-10-13 19:19:09,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:09,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:09,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682861421] [2019-10-13 19:19:09,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:09,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:09,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:09,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:09,017 INFO L87 Difference]: Start difference. First operand 382 states and 526 transitions. Second operand 6 states. [2019-10-13 19:19:11,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:11,441 INFO L93 Difference]: Finished difference Result 753 states and 1031 transitions. [2019-10-13 19:19:11,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:11,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-13 19:19:11,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:11,449 INFO L225 Difference]: With dead ends: 753 [2019-10-13 19:19:11,449 INFO L226 Difference]: Without dead ends: 588 [2019-10-13 19:19:11,451 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 19:19:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-10-13 19:19:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 527. [2019-10-13 19:19:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-10-13 19:19:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 719 transitions. [2019-10-13 19:19:11,521 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 719 transitions. Word has length 25 [2019-10-13 19:19:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:11,521 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 719 transitions. [2019-10-13 19:19:11,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 719 transitions. [2019-10-13 19:19:11,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 19:19:11,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:11,524 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:11,525 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:11,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:11,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2127650726, now seen corresponding path program 1 times [2019-10-13 19:19:11,525 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:11,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337917144] [2019-10-13 19:19:11,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:11,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:11,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:11,777 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 19:19:11,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337917144] [2019-10-13 19:19:11,778 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:11,778 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:11,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775003806] [2019-10-13 19:19:11,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:11,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:11,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:11,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:11,780 INFO L87 Difference]: Start difference. First operand 527 states and 719 transitions. Second operand 6 states. [2019-10-13 19:19:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:13,533 INFO L93 Difference]: Finished difference Result 699 states and 941 transitions. [2019-10-13 19:19:13,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:13,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-13 19:19:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:13,541 INFO L225 Difference]: With dead ends: 699 [2019-10-13 19:19:13,541 INFO L226 Difference]: Without dead ends: 678 [2019-10-13 19:19:13,542 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:19:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2019-10-13 19:19:13,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 591. [2019-10-13 19:19:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-10-13 19:19:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 802 transitions. [2019-10-13 19:19:13,590 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 802 transitions. Word has length 31 [2019-10-13 19:19:13,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:13,591 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 802 transitions. [2019-10-13 19:19:13,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 802 transitions. [2019-10-13 19:19:13,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-13 19:19:13,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:13,593 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:13,593 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:13,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:13,594 INFO L82 PathProgramCache]: Analyzing trace with hash -984761052, now seen corresponding path program 1 times [2019-10-13 19:19:13,594 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:13,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670360854] [2019-10-13 19:19:13,594 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:13,594 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:13,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:13,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670360854] [2019-10-13 19:19:13,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:13,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:13,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673894186] [2019-10-13 19:19:13,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:13,804 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:13,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:13,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:13,805 INFO L87 Difference]: Start difference. First operand 591 states and 802 transitions. Second operand 6 states. [2019-10-13 19:19:15,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:15,894 INFO L93 Difference]: Finished difference Result 1133 states and 1525 transitions. [2019-10-13 19:19:15,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:15,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-10-13 19:19:15,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:15,901 INFO L225 Difference]: With dead ends: 1133 [2019-10-13 19:19:15,901 INFO L226 Difference]: Without dead ends: 827 [2019-10-13 19:19:15,903 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 19:19:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-10-13 19:19:15,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 779. [2019-10-13 19:19:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2019-10-13 19:19:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1059 transitions. [2019-10-13 19:19:15,963 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1059 transitions. Word has length 33 [2019-10-13 19:19:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:15,963 INFO L462 AbstractCegarLoop]: Abstraction has 779 states and 1059 transitions. [2019-10-13 19:19:15,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:15,964 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1059 transitions. [2019-10-13 19:19:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-13 19:19:15,966 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:15,966 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:15,966 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:15,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:15,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1494073565, now seen corresponding path program 1 times [2019-10-13 19:19:15,967 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:15,967 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819098568] [2019-10-13 19:19:15,967 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:15,968 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:15,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:16,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819098568] [2019-10-13 19:19:16,146 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:16,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:19:16,147 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641905667] [2019-10-13 19:19:16,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:19:16,148 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:16,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:19:16,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:19:16,148 INFO L87 Difference]: Start difference. First operand 779 states and 1059 transitions. Second operand 8 states. [2019-10-13 19:19:18,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:18,428 INFO L93 Difference]: Finished difference Result 881 states and 1187 transitions. [2019-10-13 19:19:18,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:19:18,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-13 19:19:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:18,436 INFO L225 Difference]: With dead ends: 881 [2019-10-13 19:19:18,436 INFO L226 Difference]: Without dead ends: 876 [2019-10-13 19:19:18,437 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2019-10-13 19:19:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 822. [2019-10-13 19:19:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2019-10-13 19:19:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1111 transitions. [2019-10-13 19:19:18,505 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1111 transitions. Word has length 39 [2019-10-13 19:19:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:18,509 INFO L462 AbstractCegarLoop]: Abstraction has 822 states and 1111 transitions. [2019-10-13 19:19:18,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:19:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1111 transitions. [2019-10-13 19:19:18,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 19:19:18,514 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:18,514 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:18,514 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:18,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1679216250, now seen corresponding path program 1 times [2019-10-13 19:19:18,515 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:18,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210975303] [2019-10-13 19:19:18,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:18,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:18,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:18,753 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 19:19:18,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210975303] [2019-10-13 19:19:18,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:18,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:19:18,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483579319] [2019-10-13 19:19:18,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:19:18,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:18,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:19:18,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:19:18,756 INFO L87 Difference]: Start difference. First operand 822 states and 1111 transitions. Second operand 6 states. [2019-10-13 19:19:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:20,691 INFO L93 Difference]: Finished difference Result 856 states and 1153 transitions. [2019-10-13 19:19:20,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:19:20,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-13 19:19:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:20,696 INFO L225 Difference]: With dead ends: 856 [2019-10-13 19:19:20,696 INFO L226 Difference]: Without dead ends: 853 [2019-10-13 19:19:20,696 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 19:19:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-10-13 19:19:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 833. [2019-10-13 19:19:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2019-10-13 19:19:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1125 transitions. [2019-10-13 19:19:20,761 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1125 transitions. Word has length 38 [2019-10-13 19:19:20,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:20,762 INFO L462 AbstractCegarLoop]: Abstraction has 833 states and 1125 transitions. [2019-10-13 19:19:20,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:19:20,762 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1125 transitions. [2019-10-13 19:19:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-13 19:19:20,765 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:20,765 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:20,765 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:20,765 INFO L82 PathProgramCache]: Analyzing trace with hash 310268416, now seen corresponding path program 1 times [2019-10-13 19:19:20,766 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:20,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121583223] [2019-10-13 19:19:20,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:20,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:20,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:21,019 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 19:19:21,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121583223] [2019-10-13 19:19:21,023 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:21,023 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:19:21,023 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56484800] [2019-10-13 19:19:21,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:19:21,025 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:21,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:19:21,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:21,026 INFO L87 Difference]: Start difference. First operand 833 states and 1125 transitions. Second operand 10 states. [2019-10-13 19:19:23,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:23,643 INFO L93 Difference]: Finished difference Result 896 states and 1205 transitions. [2019-10-13 19:19:23,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:19:23,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2019-10-13 19:19:23,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:23,649 INFO L225 Difference]: With dead ends: 896 [2019-10-13 19:19:23,649 INFO L226 Difference]: Without dead ends: 881 [2019-10-13 19:19:23,650 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-10-13 19:19:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 831. [2019-10-13 19:19:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2019-10-13 19:19:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1121 transitions. [2019-10-13 19:19:23,712 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1121 transitions. Word has length 39 [2019-10-13 19:19:23,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:23,713 INFO L462 AbstractCegarLoop]: Abstraction has 831 states and 1121 transitions. [2019-10-13 19:19:23,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:19:23,713 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1121 transitions. [2019-10-13 19:19:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-13 19:19:23,716 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:23,717 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 19:19:23,717 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:23,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1380961955, now seen corresponding path program 1 times [2019-10-13 19:19:23,718 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:23,719 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870925195] [2019-10-13 19:19:23,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:23,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:23,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:23,984 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 19:19:23,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870925195] [2019-10-13 19:19:23,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:23,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:19:23,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075542813] [2019-10-13 19:19:23,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:19:23,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:23,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:19:23,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:23,986 INFO L87 Difference]: Start difference. First operand 831 states and 1121 transitions. Second operand 10 states. [2019-10-13 19:19:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:25,842 INFO L93 Difference]: Finished difference Result 894 states and 1201 transitions. [2019-10-13 19:19:25,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:19:25,843 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-10-13 19:19:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:25,848 INFO L225 Difference]: With dead ends: 894 [2019-10-13 19:19:25,848 INFO L226 Difference]: Without dead ends: 874 [2019-10-13 19:19:25,849 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:25,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2019-10-13 19:19:25,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 824. [2019-10-13 19:19:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2019-10-13 19:19:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1112 transitions. [2019-10-13 19:19:25,905 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1112 transitions. Word has length 40 [2019-10-13 19:19:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:25,905 INFO L462 AbstractCegarLoop]: Abstraction has 824 states and 1112 transitions. [2019-10-13 19:19:25,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:19:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1112 transitions. [2019-10-13 19:19:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-13 19:19:25,907 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:25,907 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:25,907 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:25,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1241145468, now seen corresponding path program 1 times [2019-10-13 19:19:25,908 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:25,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926496787] [2019-10-13 19:19:25,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:25,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:25,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:26,095 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 19:19:26,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926496787] [2019-10-13 19:19:26,097 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:26,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:19:26,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635258406] [2019-10-13 19:19:26,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:26,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:26,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:26,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:19:26,099 INFO L87 Difference]: Start difference. First operand 824 states and 1112 transitions. Second operand 7 states. [2019-10-13 19:19:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:28,760 INFO L93 Difference]: Finished difference Result 1208 states and 1640 transitions. [2019-10-13 19:19:28,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:19:28,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2019-10-13 19:19:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:28,768 INFO L225 Difference]: With dead ends: 1208 [2019-10-13 19:19:28,769 INFO L226 Difference]: Without dead ends: 1205 [2019-10-13 19:19:28,770 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:28,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-10-13 19:19:28,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 937. [2019-10-13 19:19:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2019-10-13 19:19:28,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1266 transitions. [2019-10-13 19:19:28,844 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1266 transitions. Word has length 44 [2019-10-13 19:19:28,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:28,844 INFO L462 AbstractCegarLoop]: Abstraction has 937 states and 1266 transitions. [2019-10-13 19:19:28,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:28,845 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1266 transitions. [2019-10-13 19:19:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 19:19:28,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:28,846 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:28,847 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:28,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1407580827, now seen corresponding path program 1 times [2019-10-13 19:19:28,847 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:28,848 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454492846] [2019-10-13 19:19:28,848 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:28,848 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:28,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:29,184 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 19:19:29,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454492846] [2019-10-13 19:19:29,186 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:29,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:19:29,188 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020078747] [2019-10-13 19:19:29,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:19:29,189 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:29,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:19:29,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:19:29,190 INFO L87 Difference]: Start difference. First operand 937 states and 1266 transitions. Second operand 13 states. [2019-10-13 19:19:32,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:32,320 INFO L93 Difference]: Finished difference Result 998 states and 1338 transitions. [2019-10-13 19:19:32,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:19:32,320 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2019-10-13 19:19:32,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:32,329 INFO L225 Difference]: With dead ends: 998 [2019-10-13 19:19:32,329 INFO L226 Difference]: Without dead ends: 989 [2019-10-13 19:19:32,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:19:32,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2019-10-13 19:19:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 937. [2019-10-13 19:19:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2019-10-13 19:19:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1264 transitions. [2019-10-13 19:19:32,461 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1264 transitions. Word has length 43 [2019-10-13 19:19:32,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:32,462 INFO L462 AbstractCegarLoop]: Abstraction has 937 states and 1264 transitions. [2019-10-13 19:19:32,462 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:19:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1264 transitions. [2019-10-13 19:19:32,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 19:19:32,464 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:32,464 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:32,465 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:32,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:32,465 INFO L82 PathProgramCache]: Analyzing trace with hash -319659871, now seen corresponding path program 1 times [2019-10-13 19:19:32,466 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:32,466 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151608295] [2019-10-13 19:19:32,466 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:32,467 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:32,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:32,768 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 19:19:32,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151608295] [2019-10-13 19:19:32,769 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:32,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:19:32,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016176583] [2019-10-13 19:19:32,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:19:32,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:32,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:19:32,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:19:32,772 INFO L87 Difference]: Start difference. First operand 937 states and 1264 transitions. Second operand 8 states. [2019-10-13 19:19:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:35,764 INFO L93 Difference]: Finished difference Result 984 states and 1319 transitions. [2019-10-13 19:19:35,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:19:35,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-10-13 19:19:35,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:35,772 INFO L225 Difference]: With dead ends: 984 [2019-10-13 19:19:35,772 INFO L226 Difference]: Without dead ends: 962 [2019-10-13 19:19:35,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:35,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2019-10-13 19:19:35,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 939. [2019-10-13 19:19:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2019-10-13 19:19:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1266 transitions. [2019-10-13 19:19:35,899 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1266 transitions. Word has length 42 [2019-10-13 19:19:35,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:35,900 INFO L462 AbstractCegarLoop]: Abstraction has 939 states and 1266 transitions. [2019-10-13 19:19:35,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:19:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1266 transitions. [2019-10-13 19:19:35,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-13 19:19:35,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:35,903 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:35,903 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:35,904 INFO L82 PathProgramCache]: Analyzing trace with hash -58863371, now seen corresponding path program 1 times [2019-10-13 19:19:35,904 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:35,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267254295] [2019-10-13 19:19:35,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:35,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:35,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:19:36,306 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267254295] [2019-10-13 19:19:36,306 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:19:36,307 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:19:36,307 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277484129] [2019-10-13 19:19:36,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:19:36,309 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:36,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:19:36,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:36,310 INFO L87 Difference]: Start difference. First operand 939 states and 1266 transitions. Second operand 11 states. [2019-10-13 19:19:36,679 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2019-10-13 19:19:37,004 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 82