java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:17:56,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:17:56,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:17:56,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:17:56,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:17:56,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:17:56,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:17:56,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:17:56,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:17:56,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:17:56,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:17:56,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:17:56,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:17:56,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:17:56,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:17:56,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:17:56,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:17:56,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:17:56,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:17:56,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:17:56,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:17:56,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:17:56,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:17:56,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:17:56,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:17:56,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:17:56,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:17:56,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:17:56,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:17:56,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:17:56,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:17:56,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:17:56,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:17:56,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:17:56,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:17:56,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:17:56,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:17:56,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:17:56,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:17:56,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:17:56,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:17:56,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:17:56,682 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:17:56,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:17:56,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:17:56,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:17:56,684 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:17:56,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:17:56,685 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:17:56,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:17:56,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:17:56,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:17:56,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:17:56,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:17:56,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:17:56,686 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:17:56,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:17:56,687 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:17:56,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:17:56,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:17:56,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:17:56,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:17:56,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:17:56,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:56,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:17:56,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:17:56,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:17:56,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:17:56,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:17:56,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:17:56,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:17:56,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:17:56,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:17:56,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:17:56,978 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:17:56,979 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:17:56,979 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-2.c [2019-10-14 23:17:57,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f57f4b6/3c896a82883348328ba7f45e70ffd729/FLAG7e90f8eb1 [2019-10-14 23:17:57,606 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:57,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-2.c [2019-10-14 23:17:57,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f57f4b6/3c896a82883348328ba7f45e70ffd729/FLAG7e90f8eb1 [2019-10-14 23:17:57,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f57f4b6/3c896a82883348328ba7f45e70ffd729 [2019-10-14 23:17:57,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:57,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:57,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:57,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:57,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:57,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:57" (1/1) ... [2019-10-14 23:17:57,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e7d365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:57, skipping insertion in model container [2019-10-14 23:17:57,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:57" (1/1) ... [2019-10-14 23:17:57,906 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:57,969 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:58,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:58,299 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:58,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:58,517 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:58,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:58 WrapperNode [2019-10-14 23:17:58,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:58,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:58,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:58,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:58,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:58" (1/1) ... [2019-10-14 23:17:58,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:58" (1/1) ... [2019-10-14 23:17:58,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:58" (1/1) ... [2019-10-14 23:17:58,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:58" (1/1) ... [2019-10-14 23:17:58,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:58" (1/1) ... [2019-10-14 23:17:58,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:58" (1/1) ... [2019-10-14 23:17:58,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:58" (1/1) ... [2019-10-14 23:17:58,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:58,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:58,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:58,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:58,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2019-10-14 23:17:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2019-10-14 23:17:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2019-10-14 23:17:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2019-10-14 23:17:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2019-10-14 23:17:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2019-10-14 23:17:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2019-10-14 23:17:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2019-10-14 23:17:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2019-10-14 23:17:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2019-10-14 23:17:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:58,695 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2019-10-14 23:17:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2019-10-14 23:17:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2019-10-14 23:17:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2019-10-14 23:17:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2019-10-14 23:17:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2019-10-14 23:17:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2019-10-14 23:17:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2019-10-14 23:17:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2019-10-14 23:17:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2019-10-14 23:17:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2019-10-14 23:17:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2019-10-14 23:17:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2019-10-14 23:17:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2019-10-14 23:17:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:17:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:17:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-14 23:17:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:17:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2019-10-14 23:17:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2019-10-14 23:17:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2019-10-14 23:17:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2019-10-14 23:17:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2019-10-14 23:17:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2019-10-14 23:17:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2019-10-14 23:17:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2019-10-14 23:17:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2019-10-14 23:17:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2019-10-14 23:17:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2019-10-14 23:17:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2019-10-14 23:17:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2019-10-14 23:17:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2019-10-14 23:17:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2019-10-14 23:17:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2019-10-14 23:17:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2019-10-14 23:17:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2019-10-14 23:17:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2019-10-14 23:17:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2019-10-14 23:17:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2019-10-14 23:17:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2019-10-14 23:17:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2019-10-14 23:17:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2019-10-14 23:17:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:59,054 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,114 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:59,115 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:59,126 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,137 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:59,137 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:59,155 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,488 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2019-10-14 23:17:59,489 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2019-10-14 23:17:59,491 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,563 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2019-10-14 23:17:59,563 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2019-10-14 23:17:59,582 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,610 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2019-10-14 23:17:59,611 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2019-10-14 23:17:59,749 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,763 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:59,763 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:59,764 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,779 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:59,780 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:59,781 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,795 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:59,795 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:59,844 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,883 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2019-10-14 23:17:59,883 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2019-10-14 23:17:59,938 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,946 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:59,946 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:59,946 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,966 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:59,966 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:59,966 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:59,973 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:59,974 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:59,991 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:59,991 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:17:59,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:59 BoogieIcfgContainer [2019-10-14 23:17:59,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:59,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:59,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:59,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:59,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:57" (1/3) ... [2019-10-14 23:18:00,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c526763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:59, skipping insertion in model container [2019-10-14 23:18:00,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:58" (2/3) ... [2019-10-14 23:18:00,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c526763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:00, skipping insertion in model container [2019-10-14 23:18:00,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:59" (3/3) ... [2019-10-14 23:18:00,015 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2019-10-14 23:18:00,025 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:18:00,034 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:18:00,045 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:18:00,071 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:18:00,071 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:18:00,072 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:18:00,072 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:18:00,072 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:18:00,072 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:18:00,072 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:18:00,072 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:18:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2019-10-14 23:18:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 23:18:00,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:00,107 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:00,109 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:00,114 INFO L82 PathProgramCache]: Analyzing trace with hash -194924121, now seen corresponding path program 1 times [2019-10-14 23:18:00,121 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:00,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923260302] [2019-10-14 23:18:00,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:00,122 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:00,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:00,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923260302] [2019-10-14 23:18:00,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:00,582 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:18:00,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551382340] [2019-10-14 23:18:00,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:18:00,592 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:00,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:18:00,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:18:00,615 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 5 states. [2019-10-14 23:18:02,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:02,179 INFO L93 Difference]: Finished difference Result 538 states and 779 transitions. [2019-10-14 23:18:02,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:02,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-14 23:18:02,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:02,199 INFO L225 Difference]: With dead ends: 538 [2019-10-14 23:18:02,200 INFO L226 Difference]: Without dead ends: 322 [2019-10-14 23:18:02,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:18:02,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2019-10-14 23:18:02,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 292. [2019-10-14 23:18:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2019-10-14 23:18:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 385 transitions. [2019-10-14 23:18:02,301 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 385 transitions. Word has length 20 [2019-10-14 23:18:02,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:02,301 INFO L462 AbstractCegarLoop]: Abstraction has 292 states and 385 transitions. [2019-10-14 23:18:02,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:18:02,302 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 385 transitions. [2019-10-14 23:18:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-14 23:18:02,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:02,304 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:02,304 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:02,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:02,305 INFO L82 PathProgramCache]: Analyzing trace with hash -632063438, now seen corresponding path program 1 times [2019-10-14 23:18:02,305 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:02,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136503138] [2019-10-14 23:18:02,305 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:02,305 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:02,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:02,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136503138] [2019-10-14 23:18:02,764 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:02,764 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:18:02,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451848811] [2019-10-14 23:18:02,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:02,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:02,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:02,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:18:02,767 INFO L87 Difference]: Start difference. First operand 292 states and 385 transitions. Second operand 7 states. [2019-10-14 23:18:05,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:05,462 INFO L93 Difference]: Finished difference Result 846 states and 1124 transitions. [2019-10-14 23:18:05,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:18:05,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-10-14 23:18:05,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:05,469 INFO L225 Difference]: With dead ends: 846 [2019-10-14 23:18:05,469 INFO L226 Difference]: Without dead ends: 575 [2019-10-14 23:18:05,473 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:05,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2019-10-14 23:18:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 381. [2019-10-14 23:18:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2019-10-14 23:18:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 497 transitions. [2019-10-14 23:18:05,551 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 497 transitions. Word has length 28 [2019-10-14 23:18:05,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:05,551 INFO L462 AbstractCegarLoop]: Abstraction has 381 states and 497 transitions. [2019-10-14 23:18:05,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 497 transitions. [2019-10-14 23:18:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-14 23:18:05,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:05,553 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:05,553 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:05,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash 177283188, now seen corresponding path program 1 times [2019-10-14 23:18:05,554 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:05,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079941859] [2019-10-14 23:18:05,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:05,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:05,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:05,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079941859] [2019-10-14 23:18:05,792 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:05,793 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:05,793 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947512796] [2019-10-14 23:18:05,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:05,794 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:05,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:05,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:05,794 INFO L87 Difference]: Start difference. First operand 381 states and 497 transitions. Second operand 6 states. [2019-10-14 23:18:07,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:07,750 INFO L93 Difference]: Finished difference Result 758 states and 1012 transitions. [2019-10-14 23:18:07,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:07,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2019-10-14 23:18:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:07,755 INFO L225 Difference]: With dead ends: 758 [2019-10-14 23:18:07,756 INFO L226 Difference]: Without dead ends: 597 [2019-10-14 23:18:07,757 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2019-10-14 23:18:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 524. [2019-10-14 23:18:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2019-10-14 23:18:07,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 686 transitions. [2019-10-14 23:18:07,810 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 686 transitions. Word has length 28 [2019-10-14 23:18:07,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:07,810 INFO L462 AbstractCegarLoop]: Abstraction has 524 states and 686 transitions. [2019-10-14 23:18:07,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:07,810 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 686 transitions. [2019-10-14 23:18:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-14 23:18:07,812 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:07,812 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:07,812 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash 182749823, now seen corresponding path program 1 times [2019-10-14 23:18:07,813 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:07,813 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083033823] [2019-10-14 23:18:07,813 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:07,813 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:07,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:07,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083033823] [2019-10-14 23:18:07,993 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:07,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:07,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825419892] [2019-10-14 23:18:07,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:07,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:07,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:07,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:07,995 INFO L87 Difference]: Start difference. First operand 524 states and 686 transitions. Second operand 6 states. [2019-10-14 23:18:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:09,646 INFO L93 Difference]: Finished difference Result 1076 states and 1422 transitions. [2019-10-14 23:18:09,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:09,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-14 23:18:09,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:09,657 INFO L225 Difference]: With dead ends: 1076 [2019-10-14 23:18:09,658 INFO L226 Difference]: Without dead ends: 771 [2019-10-14 23:18:09,659 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:09,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2019-10-14 23:18:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 712. [2019-10-14 23:18:09,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2019-10-14 23:18:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 943 transitions. [2019-10-14 23:18:09,746 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 943 transitions. Word has length 30 [2019-10-14 23:18:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:09,747 INFO L462 AbstractCegarLoop]: Abstraction has 712 states and 943 transitions. [2019-10-14 23:18:09,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 943 transitions. [2019-10-14 23:18:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-14 23:18:09,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:09,756 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:09,756 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:09,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:09,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1294168590, now seen corresponding path program 1 times [2019-10-14 23:18:09,756 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:09,757 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734677445] [2019-10-14 23:18:09,757 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:09,757 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:09,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:09,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734677445] [2019-10-14 23:18:09,952 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:09,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:09,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827190132] [2019-10-14 23:18:09,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:09,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:09,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:09,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:09,954 INFO L87 Difference]: Start difference. First operand 712 states and 943 transitions. Second operand 6 states. [2019-10-14 23:18:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:11,505 INFO L93 Difference]: Finished difference Result 886 states and 1160 transitions. [2019-10-14 23:18:11,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:11,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-10-14 23:18:11,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:11,514 INFO L225 Difference]: With dead ends: 886 [2019-10-14 23:18:11,514 INFO L226 Difference]: Without dead ends: 868 [2019-10-14 23:18:11,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:11,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2019-10-14 23:18:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 795. [2019-10-14 23:18:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2019-10-14 23:18:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1049 transitions. [2019-10-14 23:18:11,586 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1049 transitions. Word has length 34 [2019-10-14 23:18:11,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:11,587 INFO L462 AbstractCegarLoop]: Abstraction has 795 states and 1049 transitions. [2019-10-14 23:18:11,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1049 transitions. [2019-10-14 23:18:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-14 23:18:11,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:11,593 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:11,593 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:11,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:11,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2013424057, now seen corresponding path program 1 times [2019-10-14 23:18:11,594 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:11,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615058151] [2019-10-14 23:18:11,594 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:11,594 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:11,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:11,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615058151] [2019-10-14 23:18:11,788 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:11,788 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:18:11,788 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197782568] [2019-10-14 23:18:11,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:11,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:11,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:18:11,790 INFO L87 Difference]: Start difference. First operand 795 states and 1049 transitions. Second operand 7 states. [2019-10-14 23:18:13,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:13,359 INFO L93 Difference]: Finished difference Result 1181 states and 1582 transitions. [2019-10-14 23:18:13,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:18:13,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-10-14 23:18:13,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:13,369 INFO L225 Difference]: With dead ends: 1181 [2019-10-14 23:18:13,369 INFO L226 Difference]: Without dead ends: 1178 [2019-10-14 23:18:13,370 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2019-10-14 23:18:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 910. [2019-10-14 23:18:13,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2019-10-14 23:18:13,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1207 transitions. [2019-10-14 23:18:13,466 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1207 transitions. Word has length 41 [2019-10-14 23:18:13,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:13,466 INFO L462 AbstractCegarLoop]: Abstraction has 910 states and 1207 transitions. [2019-10-14 23:18:13,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:13,467 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1207 transitions. [2019-10-14 23:18:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-14 23:18:13,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:13,469 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:13,469 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:13,470 INFO L82 PathProgramCache]: Analyzing trace with hash 2127814436, now seen corresponding path program 1 times [2019-10-14 23:18:13,470 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:13,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594831525] [2019-10-14 23:18:13,470 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:13,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:13,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:13,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594831525] [2019-10-14 23:18:13,653 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:13,653 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:13,653 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938056090] [2019-10-14 23:18:13,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:13,654 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:13,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:13,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:13,656 INFO L87 Difference]: Start difference. First operand 910 states and 1207 transitions. Second operand 6 states. [2019-10-14 23:18:14,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:14,817 INFO L93 Difference]: Finished difference Result 953 states and 1260 transitions. [2019-10-14 23:18:14,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:14,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2019-10-14 23:18:14,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:14,823 INFO L225 Difference]: With dead ends: 953 [2019-10-14 23:18:14,823 INFO L226 Difference]: Without dead ends: 950 [2019-10-14 23:18:14,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:18:14,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2019-10-14 23:18:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 921. [2019-10-14 23:18:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2019-10-14 23:18:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1219 transitions. [2019-10-14 23:18:14,901 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1219 transitions. Word has length 40 [2019-10-14 23:18:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:14,902 INFO L462 AbstractCegarLoop]: Abstraction has 921 states and 1219 transitions. [2019-10-14 23:18:14,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1219 transitions. [2019-10-14 23:18:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-14 23:18:14,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:14,903 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] [2019-10-14 23:18:14,904 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:14,904 INFO L82 PathProgramCache]: Analyzing trace with hash -277982875, now seen corresponding path program 1 times [2019-10-14 23:18:14,904 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:14,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235093402] [2019-10-14 23:18:14,904 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:14,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:14,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:15,115 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235093402] [2019-10-14 23:18:15,115 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:15,115 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:15,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582729329] [2019-10-14 23:18:15,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:15,116 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:15,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:15,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:15,117 INFO L87 Difference]: Start difference. First operand 921 states and 1219 transitions. Second operand 8 states. [2019-10-14 23:18:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:16,619 INFO L93 Difference]: Finished difference Result 1014 states and 1331 transitions. [2019-10-14 23:18:16,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:18:16,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2019-10-14 23:18:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:16,627 INFO L225 Difference]: With dead ends: 1014 [2019-10-14 23:18:16,627 INFO L226 Difference]: Without dead ends: 1009 [2019-10-14 23:18:16,628 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:18:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2019-10-14 23:18:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 960. [2019-10-14 23:18:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2019-10-14 23:18:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1264 transitions. [2019-10-14 23:18:16,702 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1264 transitions. Word has length 41 [2019-10-14 23:18:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:16,703 INFO L462 AbstractCegarLoop]: Abstraction has 960 states and 1264 transitions. [2019-10-14 23:18:16,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1264 transitions. [2019-10-14 23:18:16,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-14 23:18:16,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:16,704 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:16,704 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:16,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:16,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2048774711, now seen corresponding path program 1 times [2019-10-14 23:18:16,705 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:16,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385239309] [2019-10-14 23:18:16,705 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:16,705 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:16,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:16,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385239309] [2019-10-14 23:18:16,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:16,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:18:16,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039648412] [2019-10-14 23:18:16,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:18:16,951 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:16,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:18:16,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:16,952 INFO L87 Difference]: Start difference. First operand 960 states and 1264 transitions. Second operand 11 states. [2019-10-14 23:18:17,246 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2019-10-14 23:18:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:21,027 INFO L93 Difference]: Finished difference Result 1784 states and 2332 transitions. [2019-10-14 23:18:21,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:18:21,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2019-10-14 23:18:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:21,035 INFO L225 Difference]: With dead ends: 1784 [2019-10-14 23:18:21,035 INFO L226 Difference]: Without dead ends: 1159 [2019-10-14 23:18:21,038 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:18:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2019-10-14 23:18:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 945. [2019-10-14 23:18:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2019-10-14 23:18:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1229 transitions. [2019-10-14 23:18:21,121 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1229 transitions. Word has length 42 [2019-10-14 23:18:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:21,122 INFO L462 AbstractCegarLoop]: Abstraction has 945 states and 1229 transitions. [2019-10-14 23:18:21,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:18:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1229 transitions. [2019-10-14 23:18:21,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-14 23:18:21,123 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:21,123 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:21,124 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:21,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:21,124 INFO L82 PathProgramCache]: Analyzing trace with hash 424343062, now seen corresponding path program 1 times [2019-10-14 23:18:21,124 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:21,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490420985] [2019-10-14 23:18:21,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:21,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:21,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:21,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490420985] [2019-10-14 23:18:21,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:21,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:18:21,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821488755] [2019-10-14 23:18:21,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:18:21,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:21,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:18:21,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:21,466 INFO L87 Difference]: Start difference. First operand 945 states and 1229 transitions. Second operand 13 states. [2019-10-14 23:18:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:23,571 INFO L93 Difference]: Finished difference Result 1014 states and 1311 transitions. [2019-10-14 23:18:23,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:18:23,571 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2019-10-14 23:18:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:23,577 INFO L225 Difference]: With dead ends: 1014 [2019-10-14 23:18:23,577 INFO L226 Difference]: Without dead ends: 1008 [2019-10-14 23:18:23,578 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:18:23,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2019-10-14 23:18:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 945. [2019-10-14 23:18:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2019-10-14 23:18:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1228 transitions. [2019-10-14 23:18:23,659 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1228 transitions. Word has length 42 [2019-10-14 23:18:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:23,660 INFO L462 AbstractCegarLoop]: Abstraction has 945 states and 1228 transitions. [2019-10-14 23:18:23,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:18:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1228 transitions. [2019-10-14 23:18:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-14 23:18:23,661 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:23,661 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:23,662 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:23,662 INFO L82 PathProgramCache]: Analyzing trace with hash -590658574, now seen corresponding path program 1 times [2019-10-14 23:18:23,662 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:23,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540986310] [2019-10-14 23:18:23,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:23,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:23,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:23,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540986310] [2019-10-14 23:18:23,987 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:23,987 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:18:23,987 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208099196] [2019-10-14 23:18:23,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:18:23,988 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:23,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:18:23,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:23,989 INFO L87 Difference]: Start difference. First operand 945 states and 1228 transitions. Second operand 13 states. [2019-10-14 23:18:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:26,153 INFO L93 Difference]: Finished difference Result 1014 states and 1309 transitions. [2019-10-14 23:18:26,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:18:26,153 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2019-10-14 23:18:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:26,158 INFO L225 Difference]: With dead ends: 1014 [2019-10-14 23:18:26,159 INFO L226 Difference]: Without dead ends: 1008 [2019-10-14 23:18:26,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:18:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2019-10-14 23:18:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 945. [2019-10-14 23:18:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2019-10-14 23:18:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1227 transitions. [2019-10-14 23:18:26,246 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1227 transitions. Word has length 43 [2019-10-14 23:18:26,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:26,247 INFO L462 AbstractCegarLoop]: Abstraction has 945 states and 1227 transitions. [2019-10-14 23:18:26,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:18:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1227 transitions. [2019-10-14 23:18:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:18:26,249 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:26,249 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:26,249 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:26,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:26,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1046770881, now seen corresponding path program 1 times [2019-10-14 23:18:26,250 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:26,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388944231] [2019-10-14 23:18:26,250 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:26,250 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:26,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:26,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388944231] [2019-10-14 23:18:26,527 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:26,527 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:18:26,528 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610922878] [2019-10-14 23:18:26,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:18:26,528 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:26,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:18:26,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:26,529 INFO L87 Difference]: Start difference. First operand 945 states and 1227 transitions. Second operand 10 states. [2019-10-14 23:18:28,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:28,350 INFO L93 Difference]: Finished difference Result 1008 states and 1302 transitions. [2019-10-14 23:18:28,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:18:28,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2019-10-14 23:18:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:28,361 INFO L225 Difference]: With dead ends: 1008 [2019-10-14 23:18:28,361 INFO L226 Difference]: Without dead ends: 990 [2019-10-14 23:18:28,363 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2019-10-14 23:18:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 943. [2019-10-14 23:18:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-14 23:18:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1223 transitions. [2019-10-14 23:18:28,512 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1223 transitions. Word has length 44 [2019-10-14 23:18:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:28,514 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 1223 transitions. [2019-10-14 23:18:28,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:18:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1223 transitions. [2019-10-14 23:18:28,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-14 23:18:28,515 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:28,516 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:28,516 INFO L410 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:28,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:28,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1366251101, now seen corresponding path program 1 times [2019-10-14 23:18:28,516 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:28,517 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878916822] [2019-10-14 23:18:28,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:28,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:28,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:28,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878916822] [2019-10-14 23:18:28,833 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:28,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:28,834 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076050532] [2019-10-14 23:18:28,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:28,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:28,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:28,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:28,837 INFO L87 Difference]: Start difference. First operand 943 states and 1223 transitions. Second operand 8 states. [2019-10-14 23:18:31,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:31,531 INFO L93 Difference]: Finished difference Result 1062 states and 1346 transitions. [2019-10-14 23:18:31,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:18:31,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2019-10-14 23:18:31,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:31,537 INFO L225 Difference]: With dead ends: 1062 [2019-10-14 23:18:31,537 INFO L226 Difference]: Without dead ends: 723 [2019-10-14 23:18:31,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:31,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2019-10-14 23:18:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 651. [2019-10-14 23:18:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-14 23:18:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 812 transitions. [2019-10-14 23:18:31,636 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 812 transitions. Word has length 49 [2019-10-14 23:18:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:31,636 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 812 transitions. [2019-10-14 23:18:31,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 812 transitions. [2019-10-14 23:18:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 23:18:31,640 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:31,640 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:31,640 INFO L410 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:31,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:31,641 INFO L82 PathProgramCache]: Analyzing trace with hash -759882765, now seen corresponding path program 1 times [2019-10-14 23:18:31,641 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:31,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662630590] [2019-10-14 23:18:31,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:31,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:31,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:31,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662630590] [2019-10-14 23:18:31,941 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:31,941 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:31,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209012321] [2019-10-14 23:18:31,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:31,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:31,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:31,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:31,945 INFO L87 Difference]: Start difference. First operand 651 states and 812 transitions. Second operand 8 states. [2019-10-14 23:18:32,071 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 80