/usr/bin/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-fb55353 [2019-11-06 21:27:27,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:27:27,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:27:27,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:27:27,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:27:27,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:27:27,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:27:27,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:27:27,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:27:27,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:27:27,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:27:27,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:27:27,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:27:27,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:27:27,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:27:27,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:27:27,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:27:27,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:27:27,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:27:27,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:27:27,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:27:27,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:27:27,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:27:27,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:27:27,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:27:27,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:27:27,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:27:27,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:27:27,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:27:27,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:27:27,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:27:27,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:27:27,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:27:27,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:27:27,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:27:27,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:27:27,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:27:27,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:27:27,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:27:27,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:27:27,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:27:27,672 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 [2019-11-06 21:27:27,705 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:27:27,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:27:27,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:27:27,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:27:27,707 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:27:27,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:27:27,711 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:27:27,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:27:27,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:27:27,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:27:27,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:27:27,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:27:27,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:27:27,712 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:27:27,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:27:27,712 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:27:27,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:27:27,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:27:27,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:27:27,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:27:27,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:27:27,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:27:27,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:27:27,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:27:27,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:27:27,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:27:27,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:27:27,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:27:27,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:27:27,980 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:27:27,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:27:28,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:27:28,003 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:27:28,004 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:27:28,005 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2019-11-06 21:27:28,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2781b174b/5091c0fb341345dfa8b464830cc75352/FLAG9d4aa7976 [2019-11-06 21:27:28,662 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:27:28,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2019-11-06 21:27:28,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2781b174b/5091c0fb341345dfa8b464830cc75352/FLAG9d4aa7976 [2019-11-06 21:27:28,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2781b174b/5091c0fb341345dfa8b464830cc75352 [2019-11-06 21:27:28,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:27:28,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:27:28,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:27:28,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:27:28,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:27:28,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:27:28" (1/1) ... [2019-11-06 21:27:28,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b577f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:28, skipping insertion in model container [2019-11-06 21:27:28,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:27:28" (1/1) ... [2019-11-06 21:27:28,967 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:27:29,034 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:27:29,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:27:29,547 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:27:29,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:27:29,704 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:27:29,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:29 WrapperNode [2019-11-06 21:27:29,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:27:29,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:27:29,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:27:29,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:27:29,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:29" (1/1) ... [2019-11-06 21:27:29,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:29" (1/1) ... [2019-11-06 21:27:29,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:29" (1/1) ... [2019-11-06 21:27:29,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:29" (1/1) ... [2019-11-06 21:27:29,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:29" (1/1) ... [2019-11-06 21:27:29,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:29" (1/1) ... [2019-11-06 21:27:29,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:29" (1/1) ... [2019-11-06 21:27:29,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:27:29,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:27:29,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:27:29,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:27:29,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:29" (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 [2019-11-06 21:27:29,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:27:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:27:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2019-11-06 21:27:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2019-11-06 21:27:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2019-11-06 21:27:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2019-11-06 21:27:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2019-11-06 21:27:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2019-11-06 21:27:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2019-11-06 21:27:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2019-11-06 21:27:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2019-11-06 21:27:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:27:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2019-11-06 21:27:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2019-11-06 21:27:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2019-11-06 21:27:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2019-11-06 21:27:29,880 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2019-11-06 21:27:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2019-11-06 21:27:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2019-11-06 21:27:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2019-11-06 21:27:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2019-11-06 21:27:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2019-11-06 21:27:29,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2019-11-06 21:27:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2019-11-06 21:27:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2019-11-06 21:27:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2019-11-06 21:27:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2019-11-06 21:27:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2019-11-06 21:27:29,882 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2019-11-06 21:27:29,883 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2019-11-06 21:27:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:27:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 21:27:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:27:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-11-06 21:27:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 21:27:29,883 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2019-11-06 21:27:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2019-11-06 21:27:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2019-11-06 21:27:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2019-11-06 21:27:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2019-11-06 21:27:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2019-11-06 21:27:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2019-11-06 21:27:29,884 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2019-11-06 21:27:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2019-11-06 21:27:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2019-11-06 21:27:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2019-11-06 21:27:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2019-11-06 21:27:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2019-11-06 21:27:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2019-11-06 21:27:29,885 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2019-11-06 21:27:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2019-11-06 21:27:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2019-11-06 21:27:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2019-11-06 21:27:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2019-11-06 21:27:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2019-11-06 21:27:29,886 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2019-11-06 21:27:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2019-11-06 21:27:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2019-11-06 21:27:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2019-11-06 21:27:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2019-11-06 21:27:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2019-11-06 21:27:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:27:29,887 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2019-11-06 21:27:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:27:29,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:27:30,331 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:30,395 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-11-06 21:27:30,396 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-11-06 21:27:30,404 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:30,421 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-11-06 21:27:30,421 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-11-06 21:27:30,428 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:30,669 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2019-11-06 21:27:30,670 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2019-11-06 21:27:30,673 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:30,791 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2019-11-06 21:27:30,791 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2019-11-06 21:27:30,818 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:30,845 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2019-11-06 21:27:30,846 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2019-11-06 21:27:30,985 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:31,002 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-11-06 21:27:31,002 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-11-06 21:27:31,003 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:31,012 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-11-06 21:27:31,012 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-11-06 21:27:31,013 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:31,022 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-11-06 21:27:31,022 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-11-06 21:27:31,067 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:31,099 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2019-11-06 21:27:31,100 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2019-11-06 21:27:31,103 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:31,269 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2019-11-06 21:27:31,269 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2019-11-06 21:27:31,330 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:31,336 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-11-06 21:27:31,336 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-11-06 21:27:31,337 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:31,355 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-11-06 21:27:31,355 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-11-06 21:27:31,355 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-06 21:27:31,362 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-11-06 21:27:31,362 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-11-06 21:27:31,372 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:27:31,374 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 21:27:31,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:27:31 BoogieIcfgContainer [2019-11-06 21:27:31,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:27:31,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:27:31,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:27:31,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:27:31,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:27:28" (1/3) ... [2019-11-06 21:27:31,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa9bdf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:27:31, skipping insertion in model container [2019-11-06 21:27:31,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:27:29" (2/3) ... [2019-11-06 21:27:31,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa9bdf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:27:31, skipping insertion in model container [2019-11-06 21:27:31,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:27:31" (3/3) ... [2019-11-06 21:27:31,394 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2019-11-06 21:27:31,408 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:27:31,420 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:27:31,433 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:27:31,479 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:27:31,479 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:27:31,480 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:27:31,480 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:27:31,481 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:27:31,482 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:27:31,482 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:27:31,482 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:27:31,535 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states. [2019-11-06 21:27:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 21:27:31,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:31,546 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:27:31,548 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:31,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:31,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1980583479, now seen corresponding path program 1 times [2019-11-06 21:27:31,564 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:31,564 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144888382] [2019-11-06 21:27:31,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:32,047 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144888382] [2019-11-06 21:27:32,048 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:32,048 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:27:32,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145326048] [2019-11-06 21:27:32,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:27:32,058 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:32,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:27:32,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:27:32,072 INFO L87 Difference]: Start difference. First operand 390 states. Second operand 5 states. [2019-11-06 21:27:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:27:33,922 INFO L93 Difference]: Finished difference Result 668 states and 982 transitions. [2019-11-06 21:27:33,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:27:33,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-06 21:27:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:27:33,954 INFO L225 Difference]: With dead ends: 668 [2019-11-06 21:27:33,954 INFO L226 Difference]: Without dead ends: 424 [2019-11-06 21:27:33,967 INFO L630 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 [2019-11-06 21:27:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-11-06 21:27:34,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 382. [2019-11-06 21:27:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2019-11-06 21:27:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 526 transitions. [2019-11-06 21:27:34,091 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 526 transitions. Word has length 20 [2019-11-06 21:27:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:27:34,091 INFO L462 AbstractCegarLoop]: Abstraction has 382 states and 526 transitions. [2019-11-06 21:27:34,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:27:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 526 transitions. [2019-11-06 21:27:34,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-06 21:27:34,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:34,094 INFO L410 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] [2019-11-06 21:27:34,094 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:34,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:34,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1877533292, now seen corresponding path program 1 times [2019-11-06 21:27:34,095 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:34,095 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902840615] [2019-11-06 21:27:34,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:34,451 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902840615] [2019-11-06 21:27:34,451 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:34,451 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:27:34,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572746998] [2019-11-06 21:27:34,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:27:34,457 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:34,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:27:34,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:27:34,458 INFO L87 Difference]: Start difference. First operand 382 states and 526 transitions. Second operand 6 states. [2019-11-06 21:27:36,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:27:36,909 INFO L93 Difference]: Finished difference Result 753 states and 1031 transitions. [2019-11-06 21:27:36,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:27:36,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-06 21:27:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:27:36,916 INFO L225 Difference]: With dead ends: 753 [2019-11-06 21:27:36,917 INFO L226 Difference]: Without dead ends: 588 [2019-11-06 21:27:36,919 INFO L630 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 [2019-11-06 21:27:36,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-11-06 21:27:36,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 527. [2019-11-06 21:27:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-11-06 21:27:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 719 transitions. [2019-11-06 21:27:36,996 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 719 transitions. Word has length 25 [2019-11-06 21:27:36,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:27:36,996 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 719 transitions. [2019-11-06 21:27:36,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:27:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 719 transitions. [2019-11-06 21:27:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 21:27:36,998 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:36,999 INFO L410 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] [2019-11-06 21:27:36,999 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:36,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:36,999 INFO L82 PathProgramCache]: Analyzing trace with hash -2127650726, now seen corresponding path program 1 times [2019-11-06 21:27:37,000 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:37,000 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543395277] [2019-11-06 21:27:37,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:37,223 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543395277] [2019-11-06 21:27:37,223 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:37,223 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:27:37,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819056827] [2019-11-06 21:27:37,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:27:37,224 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:37,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:27:37,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:27:37,225 INFO L87 Difference]: Start difference. First operand 527 states and 719 transitions. Second operand 6 states. [2019-11-06 21:27:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:27:38,949 INFO L93 Difference]: Finished difference Result 699 states and 941 transitions. [2019-11-06 21:27:38,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:27:38,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-11-06 21:27:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:27:38,958 INFO L225 Difference]: With dead ends: 699 [2019-11-06 21:27:38,958 INFO L226 Difference]: Without dead ends: 678 [2019-11-06 21:27:38,959 INFO L630 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 [2019-11-06 21:27:38,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2019-11-06 21:27:39,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 591. [2019-11-06 21:27:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-11-06 21:27:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 802 transitions. [2019-11-06 21:27:39,013 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 802 transitions. Word has length 31 [2019-11-06 21:27:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:27:39,014 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 802 transitions. [2019-11-06 21:27:39,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:27:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 802 transitions. [2019-11-06 21:27:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-06 21:27:39,016 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:39,016 INFO L410 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] [2019-11-06 21:27:39,016 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:39,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:39,017 INFO L82 PathProgramCache]: Analyzing trace with hash -984761052, now seen corresponding path program 1 times [2019-11-06 21:27:39,017 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:39,017 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570631953] [2019-11-06 21:27:39,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:39,200 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570631953] [2019-11-06 21:27:39,201 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:39,201 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:27:39,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037222364] [2019-11-06 21:27:39,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:27:39,202 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:39,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:27:39,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:27:39,203 INFO L87 Difference]: Start difference. First operand 591 states and 802 transitions. Second operand 6 states. [2019-11-06 21:27:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:27:41,320 INFO L93 Difference]: Finished difference Result 1133 states and 1525 transitions. [2019-11-06 21:27:41,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:27:41,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-11-06 21:27:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:27:41,334 INFO L225 Difference]: With dead ends: 1133 [2019-11-06 21:27:41,334 INFO L226 Difference]: Without dead ends: 827 [2019-11-06 21:27:41,335 INFO L630 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 [2019-11-06 21:27:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-11-06 21:27:41,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 779. [2019-11-06 21:27:41,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2019-11-06 21:27:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1059 transitions. [2019-11-06 21:27:41,420 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1059 transitions. Word has length 33 [2019-11-06 21:27:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:27:41,421 INFO L462 AbstractCegarLoop]: Abstraction has 779 states and 1059 transitions. [2019-11-06 21:27:41,421 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:27:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1059 transitions. [2019-11-06 21:27:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-06 21:27:41,430 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:41,430 INFO L410 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] [2019-11-06 21:27:41,430 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:41,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:41,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1494073565, now seen corresponding path program 1 times [2019-11-06 21:27:41,431 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:41,432 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282104768] [2019-11-06 21:27:41,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:41,661 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282104768] [2019-11-06 21:27:41,662 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:41,662 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:27:41,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929900609] [2019-11-06 21:27:41,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:27:41,663 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:41,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:27:41,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:27:41,664 INFO L87 Difference]: Start difference. First operand 779 states and 1059 transitions. Second operand 8 states. [2019-11-06 21:27:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:27:44,127 INFO L93 Difference]: Finished difference Result 881 states and 1187 transitions. [2019-11-06 21:27:44,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:27:44,128 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-11-06 21:27:44,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:27:44,132 INFO L225 Difference]: With dead ends: 881 [2019-11-06 21:27:44,132 INFO L226 Difference]: Without dead ends: 876 [2019-11-06 21:27:44,133 INFO L630 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 [2019-11-06 21:27:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2019-11-06 21:27:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 822. [2019-11-06 21:27:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2019-11-06 21:27:44,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1111 transitions. [2019-11-06 21:27:44,203 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1111 transitions. Word has length 39 [2019-11-06 21:27:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:27:44,206 INFO L462 AbstractCegarLoop]: Abstraction has 822 states and 1111 transitions. [2019-11-06 21:27:44,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:27:44,206 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1111 transitions. [2019-11-06 21:27:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-06 21:27:44,209 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:44,209 INFO L410 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] [2019-11-06 21:27:44,209 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:44,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:44,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1679216250, now seen corresponding path program 1 times [2019-11-06 21:27:44,211 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:44,212 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66887300] [2019-11-06 21:27:44,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:44,464 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66887300] [2019-11-06 21:27:44,464 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:44,464 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:27:44,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625622532] [2019-11-06 21:27:44,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:27:44,466 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:44,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:27:44,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:27:44,467 INFO L87 Difference]: Start difference. First operand 822 states and 1111 transitions. Second operand 6 states. [2019-11-06 21:27:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:27:46,265 INFO L93 Difference]: Finished difference Result 856 states and 1153 transitions. [2019-11-06 21:27:46,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:27:46,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-11-06 21:27:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:27:46,271 INFO L225 Difference]: With dead ends: 856 [2019-11-06 21:27:46,271 INFO L226 Difference]: Without dead ends: 853 [2019-11-06 21:27:46,272 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:27:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-11-06 21:27:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 833. [2019-11-06 21:27:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2019-11-06 21:27:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1125 transitions. [2019-11-06 21:27:46,327 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1125 transitions. Word has length 38 [2019-11-06 21:27:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:27:46,328 INFO L462 AbstractCegarLoop]: Abstraction has 833 states and 1125 transitions. [2019-11-06 21:27:46,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:27:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1125 transitions. [2019-11-06 21:27:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-06 21:27:46,330 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:46,330 INFO L410 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] [2019-11-06 21:27:46,330 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:46,330 INFO L82 PathProgramCache]: Analyzing trace with hash 310268416, now seen corresponding path program 1 times [2019-11-06 21:27:46,331 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:46,331 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712887053] [2019-11-06 21:27:46,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:46,537 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712887053] [2019-11-06 21:27:46,537 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:46,537 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:27:46,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309967949] [2019-11-06 21:27:46,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:27:46,538 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:46,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:27:46,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:27:46,539 INFO L87 Difference]: Start difference. First operand 833 states and 1125 transitions. Second operand 10 states. [2019-11-06 21:27:48,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:27:48,900 INFO L93 Difference]: Finished difference Result 896 states and 1205 transitions. [2019-11-06 21:27:48,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:27:48,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2019-11-06 21:27:48,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:27:48,951 INFO L225 Difference]: With dead ends: 896 [2019-11-06 21:27:48,952 INFO L226 Difference]: Without dead ends: 881 [2019-11-06 21:27:48,953 INFO L630 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 [2019-11-06 21:27:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2019-11-06 21:27:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 831. [2019-11-06 21:27:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2019-11-06 21:27:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1121 transitions. [2019-11-06 21:27:49,048 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1121 transitions. Word has length 39 [2019-11-06 21:27:49,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:27:49,050 INFO L462 AbstractCegarLoop]: Abstraction has 831 states and 1121 transitions. [2019-11-06 21:27:49,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:27:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1121 transitions. [2019-11-06 21:27:49,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-06 21:27:49,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:49,053 INFO L410 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] [2019-11-06 21:27:49,053 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:49,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:49,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1380961955, now seen corresponding path program 1 times [2019-11-06 21:27:49,054 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:49,054 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462140682] [2019-11-06 21:27:49,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:49,274 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462140682] [2019-11-06 21:27:49,275 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:49,275 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:27:49,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92377126] [2019-11-06 21:27:49,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:27:49,277 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:49,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:27:49,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:27:49,277 INFO L87 Difference]: Start difference. First operand 831 states and 1121 transitions. Second operand 10 states. [2019-11-06 21:27:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:27:51,028 INFO L93 Difference]: Finished difference Result 894 states and 1201 transitions. [2019-11-06 21:27:51,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:27:51,029 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-11-06 21:27:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:27:51,038 INFO L225 Difference]: With dead ends: 894 [2019-11-06 21:27:51,038 INFO L226 Difference]: Without dead ends: 874 [2019-11-06 21:27:51,040 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:27:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2019-11-06 21:27:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 824. [2019-11-06 21:27:51,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2019-11-06 21:27:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1112 transitions. [2019-11-06 21:27:51,100 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1112 transitions. Word has length 40 [2019-11-06 21:27:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:27:51,100 INFO L462 AbstractCegarLoop]: Abstraction has 824 states and 1112 transitions. [2019-11-06 21:27:51,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:27:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1112 transitions. [2019-11-06 21:27:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-06 21:27:51,103 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:51,104 INFO L410 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] [2019-11-06 21:27:51,104 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:51,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1241145468, now seen corresponding path program 1 times [2019-11-06 21:27:51,104 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:51,105 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54767153] [2019-11-06 21:27:51,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:51,348 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54767153] [2019-11-06 21:27:51,349 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:51,349 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:27:51,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507050770] [2019-11-06 21:27:51,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:27:51,350 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:51,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:27:51,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:27:51,352 INFO L87 Difference]: Start difference. First operand 824 states and 1112 transitions. Second operand 7 states. [2019-11-06 21:27:53,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:27:53,892 INFO L93 Difference]: Finished difference Result 1208 states and 1640 transitions. [2019-11-06 21:27:53,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:27:53,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2019-11-06 21:27:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:27:53,899 INFO L225 Difference]: With dead ends: 1208 [2019-11-06 21:27:53,900 INFO L226 Difference]: Without dead ends: 1205 [2019-11-06 21:27:53,900 INFO L630 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 [2019-11-06 21:27:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-11-06 21:27:53,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 937. [2019-11-06 21:27:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2019-11-06 21:27:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1266 transitions. [2019-11-06 21:27:53,972 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1266 transitions. Word has length 44 [2019-11-06 21:27:53,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:27:53,973 INFO L462 AbstractCegarLoop]: Abstraction has 937 states and 1266 transitions. [2019-11-06 21:27:53,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:27:53,973 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1266 transitions. [2019-11-06 21:27:53,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-06 21:27:53,974 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:53,975 INFO L410 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] [2019-11-06 21:27:53,975 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:53,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:53,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1407580827, now seen corresponding path program 1 times [2019-11-06 21:27:53,975 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:53,976 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961975792] [2019-11-06 21:27:53,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:54,310 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961975792] [2019-11-06 21:27:54,311 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:54,311 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-06 21:27:54,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901789024] [2019-11-06 21:27:54,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 21:27:54,312 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:54,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 21:27:54,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:27:54,313 INFO L87 Difference]: Start difference. First operand 937 states and 1266 transitions. Second operand 13 states. [2019-11-06 21:27:57,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:27:57,490 INFO L93 Difference]: Finished difference Result 998 states and 1338 transitions. [2019-11-06 21:27:57,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:27:57,490 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2019-11-06 21:27:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:27:57,499 INFO L225 Difference]: With dead ends: 998 [2019-11-06 21:27:57,500 INFO L226 Difference]: Without dead ends: 989 [2019-11-06 21:27:57,508 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2019-11-06 21:27:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2019-11-06 21:27:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 937. [2019-11-06 21:27:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2019-11-06 21:27:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1264 transitions. [2019-11-06 21:27:57,625 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1264 transitions. Word has length 43 [2019-11-06 21:27:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:27:57,626 INFO L462 AbstractCegarLoop]: Abstraction has 937 states and 1264 transitions. [2019-11-06 21:27:57,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-06 21:27:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1264 transitions. [2019-11-06 21:27:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-06 21:27:57,629 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:27:57,629 INFO L410 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] [2019-11-06 21:27:57,629 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:27:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:27:57,630 INFO L82 PathProgramCache]: Analyzing trace with hash -319659871, now seen corresponding path program 1 times [2019-11-06 21:27:57,630 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:27:57,630 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222670157] [2019-11-06 21:27:57,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:27:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:57,843 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2019-11-06 21:27:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:27:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:27:58,034 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222670157] [2019-11-06 21:27:58,035 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:27:58,035 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:27:58,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119088852] [2019-11-06 21:27:58,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:27:58,036 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:27:58,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:27:58,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:27:58,037 INFO L87 Difference]: Start difference. First operand 937 states and 1264 transitions. Second operand 8 states. [2019-11-06 21:27:58,507 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-11-06 21:28:00,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:00,989 INFO L93 Difference]: Finished difference Result 984 states and 1319 transitions. [2019-11-06 21:28:00,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:28:00,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-11-06 21:28:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:00,997 INFO L225 Difference]: With dead ends: 984 [2019-11-06 21:28:00,997 INFO L226 Difference]: Without dead ends: 962 [2019-11-06 21:28:00,998 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:28:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2019-11-06 21:28:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 939. [2019-11-06 21:28:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2019-11-06 21:28:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1266 transitions. [2019-11-06 21:28:01,092 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1266 transitions. Word has length 42 [2019-11-06 21:28:01,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:01,092 INFO L462 AbstractCegarLoop]: Abstraction has 939 states and 1266 transitions. [2019-11-06 21:28:01,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:28:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1266 transitions. [2019-11-06 21:28:01,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-06 21:28:01,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:01,094 INFO L410 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] [2019-11-06 21:28:01,094 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:01,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:01,095 INFO L82 PathProgramCache]: Analyzing trace with hash -58863371, now seen corresponding path program 1 times [2019-11-06 21:28:01,095 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:01,095 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089096048] [2019-11-06 21:28:01,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:28:01,364 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089096048] [2019-11-06 21:28:01,364 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:28:01,364 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 21:28:01,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139320295] [2019-11-06 21:28:01,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 21:28:01,365 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:01,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 21:28:01,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:01,365 INFO L87 Difference]: Start difference. First operand 939 states and 1266 transitions. Second operand 11 states. [2019-11-06 21:28:01,674 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83