java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:18:03,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:18:03,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:18:03,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:18:03,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:18:03,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:18:03,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:18:03,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:18:03,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:18:03,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:18:03,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:18:03,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:18:03,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:18:03,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:18:03,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:18:03,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:18:04,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:18:04,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:18:04,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:18:04,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:18:04,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:18:04,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:18:04,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:18:04,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:18:04,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:18:04,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:18:04,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:18:04,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:18:04,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:18:04,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:18:04,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:18:04,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:18:04,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:18:04,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:18:04,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:18:04,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:18:04,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:18:04,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:18:04,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:18:04,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:18:04,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:18:04,021 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 23:18:04,039 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:18:04,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:18:04,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:18:04,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:18:04,040 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:18:04,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:18:04,041 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:18:04,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:18:04,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:18:04,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:18:04,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:18:04,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:18:04,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:18:04,042 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:18:04,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:18:04,043 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:18:04,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:18:04,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:18:04,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:18:04,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:18:04,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:18:04,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:18:04,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:18:04,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:18:04,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:18:04,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:18:04,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:18:04,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:18:04,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:18:04,304 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:18:04,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:18:04,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:18:04,322 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:18:04,322 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:18:04,323 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2019-10-14 23:18:04,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2fa98187/000ff6d38b51422bb0fab47f9939a28f/FLAGcfecd6f4f [2019-10-14 23:18:04,875 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:18:04,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-2.c [2019-10-14 23:18:04,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2fa98187/000ff6d38b51422bb0fab47f9939a28f/FLAGcfecd6f4f [2019-10-14 23:18:05,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2fa98187/000ff6d38b51422bb0fab47f9939a28f [2019-10-14 23:18:05,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:18:05,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:18:05,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:05,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:18:05,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:18:05,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:05,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4be4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05, skipping insertion in model container [2019-10-14 23:18:05,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:05,239 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:18:05,299 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:18:05,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:05,784 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:18:05,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:05,927 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:18:05,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05 WrapperNode [2019-10-14 23:18:05,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:05,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:18:05,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:18:05,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:18:05,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:05,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:05,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:05,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:06,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:06,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:06,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05" (1/1) ... [2019-10-14 23:18:06,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:18:06,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:18:06,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:18:06,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:18:06,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05" (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 23:18:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:18:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:18:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2019-10-14 23:18:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2019-10-14 23:18:06,123 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2019-10-14 23:18:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2019-10-14 23:18:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2019-10-14 23:18:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2019-10-14 23:18:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2019-10-14 23:18:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2019-10-14 23:18:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2019-10-14 23:18:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:18:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2019-10-14 23:18:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2019-10-14 23:18:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2019-10-14 23:18:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2019-10-14 23:18:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2019-10-14 23:18:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2019-10-14 23:18:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2019-10-14 23:18:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2019-10-14 23:18:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2019-10-14 23:18:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2019-10-14 23:18:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2019-10-14 23:18:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2019-10-14 23:18:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2019-10-14 23:18:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2019-10-14 23:18:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2019-10-14 23:18:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2019-10-14 23:18:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2019-10-14 23:18:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2019-10-14 23:18:06,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:18:06,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:18:06,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:18:06,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-14 23:18:06,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:18:06,132 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2019-10-14 23:18:06,132 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2019-10-14 23:18:06,132 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2019-10-14 23:18:06,133 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2019-10-14 23:18:06,133 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2019-10-14 23:18:06,133 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2019-10-14 23:18:06,133 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2019-10-14 23:18:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2019-10-14 23:18:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2019-10-14 23:18:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2019-10-14 23:18:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2019-10-14 23:18:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2019-10-14 23:18:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2019-10-14 23:18:06,134 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2019-10-14 23:18:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2019-10-14 23:18:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2019-10-14 23:18:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2019-10-14 23:18:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2019-10-14 23:18:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2019-10-14 23:18:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2019-10-14 23:18:06,135 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2019-10-14 23:18:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2019-10-14 23:18:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2019-10-14 23:18:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2019-10-14 23:18:06,136 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2019-10-14 23:18:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2019-10-14 23:18:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:18:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2019-10-14 23:18:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:18:06,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:18:06,528 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:06,598 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:06,598 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:06,627 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:06,673 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:06,673 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:06,681 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:06,912 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2019-10-14 23:18:06,912 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2019-10-14 23:18:06,916 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,015 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2019-10-14 23:18:07,015 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2019-10-14 23:18:07,028 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,045 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2019-10-14 23:18:07,045 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2019-10-14 23:18:07,142 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,180 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,181 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,181 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,191 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,192 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,192 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,203 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,203 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,251 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,282 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2019-10-14 23:18:07,283 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2019-10-14 23:18:07,285 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,423 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2019-10-14 23:18:07,423 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2019-10-14 23:18:07,468 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,473 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,474 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,474 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,488 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,489 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,489 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:18:07,495 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:18:07,495 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:18:07,506 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:18:07,506 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:18:07,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:07 BoogieIcfgContainer [2019-10-14 23:18:07,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:18:07,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:18:07,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:18:07,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:18:07,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:05" (1/3) ... [2019-10-14 23:18:07,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d1288c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:07, skipping insertion in model container [2019-10-14 23:18:07,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:05" (2/3) ... [2019-10-14 23:18:07,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d1288c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:07, skipping insertion in model container [2019-10-14 23:18:07,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:07" (3/3) ... [2019-10-14 23:18:07,516 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.c [2019-10-14 23:18:07,524 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:18:07,530 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:18:07,540 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:18:07,569 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:18:07,569 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:18:07,569 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:18:07,570 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:18:07,570 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:18:07,570 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:18:07,570 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:18:07,570 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:18:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states. [2019-10-14 23:18:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 23:18:07,604 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:07,605 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 23:18:07,607 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:07,613 INFO L82 PathProgramCache]: Analyzing trace with hash 513471565, now seen corresponding path program 1 times [2019-10-14 23:18:07,620 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:07,620 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903855835] [2019-10-14 23:18:07,621 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:07,621 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:07,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:08,154 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 23:18:08,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903855835] [2019-10-14 23:18:08,156 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:08,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:18:08,157 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030087352] [2019-10-14 23:18:08,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:18:08,163 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:08,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:18:08,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:18:08,179 INFO L87 Difference]: Start difference. First operand 389 states. Second operand 5 states. [2019-10-14 23:18:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:09,905 INFO L93 Difference]: Finished difference Result 666 states and 978 transitions. [2019-10-14 23:18:09,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:09,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-14 23:18:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:09,925 INFO L225 Difference]: With dead ends: 666 [2019-10-14 23:18:09,925 INFO L226 Difference]: Without dead ends: 422 [2019-10-14 23:18:09,933 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 23:18:09,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2019-10-14 23:18:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 380. [2019-10-14 23:18:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-10-14 23:18:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 523 transitions. [2019-10-14 23:18:10,087 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 523 transitions. Word has length 20 [2019-10-14 23:18:10,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:10,088 INFO L462 AbstractCegarLoop]: Abstraction has 380 states and 523 transitions. [2019-10-14 23:18:10,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:18:10,088 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 523 transitions. [2019-10-14 23:18:10,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-14 23:18:10,091 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:10,091 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:10,091 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:10,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2120474792, now seen corresponding path program 1 times [2019-10-14 23:18:10,093 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:10,093 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800488121] [2019-10-14 23:18:10,093 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:10,093 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:10,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,415 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 23:18:10,415 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800488121] [2019-10-14 23:18:10,415 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:10,415 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:10,416 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186758156] [2019-10-14 23:18:10,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:10,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:10,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:10,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:10,419 INFO L87 Difference]: Start difference. First operand 380 states and 523 transitions. Second operand 6 states. [2019-10-14 23:18:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:12,631 INFO L93 Difference]: Finished difference Result 747 states and 1022 transitions. [2019-10-14 23:18:12,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:12,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-14 23:18:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:12,639 INFO L225 Difference]: With dead ends: 747 [2019-10-14 23:18:12,639 INFO L226 Difference]: Without dead ends: 584 [2019-10-14 23:18:12,641 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 23:18:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-10-14 23:18:12,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 525. [2019-10-14 23:18:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2019-10-14 23:18:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 716 transitions. [2019-10-14 23:18:12,708 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 716 transitions. Word has length 25 [2019-10-14 23:18:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:12,708 INFO L462 AbstractCegarLoop]: Abstraction has 525 states and 716 transitions. [2019-10-14 23:18:12,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 716 transitions. [2019-10-14 23:18:12,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 23:18:12,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:12,710 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:12,710 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:12,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:12,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1525052010, now seen corresponding path program 1 times [2019-10-14 23:18:12,711 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:12,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660357421] [2019-10-14 23:18:12,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:12,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:12,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:12,920 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 23:18:12,920 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660357421] [2019-10-14 23:18:12,920 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:12,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:12,921 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882180276] [2019-10-14 23:18:12,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:12,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:12,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:12,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:12,922 INFO L87 Difference]: Start difference. First operand 525 states and 716 transitions. Second operand 6 states. [2019-10-14 23:18:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:14,638 INFO L93 Difference]: Finished difference Result 695 states and 934 transitions. [2019-10-14 23:18:14,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:14,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-14 23:18:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:14,645 INFO L225 Difference]: With dead ends: 695 [2019-10-14 23:18:14,645 INFO L226 Difference]: Without dead ends: 676 [2019-10-14 23:18:14,646 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 23:18:14,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2019-10-14 23:18:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 583. [2019-10-14 23:18:14,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2019-10-14 23:18:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 790 transitions. [2019-10-14 23:18:14,702 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 790 transitions. Word has length 31 [2019-10-14 23:18:14,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:14,703 INFO L462 AbstractCegarLoop]: Abstraction has 583 states and 790 transitions. [2019-10-14 23:18:14,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 790 transitions. [2019-10-14 23:18:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-14 23:18:14,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:14,705 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:14,706 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:14,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1803096900, now seen corresponding path program 1 times [2019-10-14 23:18:14,706 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:14,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512618341] [2019-10-14 23:18:14,707 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:14,707 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:14,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:14,902 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 23:18:14,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512618341] [2019-10-14 23:18:14,903 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:14,903 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:14,904 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735213768] [2019-10-14 23:18:14,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:14,906 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:14,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:14,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:14,907 INFO L87 Difference]: Start difference. First operand 583 states and 790 transitions. Second operand 6 states. [2019-10-14 23:18:16,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:16,807 INFO L93 Difference]: Finished difference Result 1117 states and 1501 transitions. [2019-10-14 23:18:16,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:16,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-10-14 23:18:16,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:16,813 INFO L225 Difference]: With dead ends: 1117 [2019-10-14 23:18:16,814 INFO L226 Difference]: Without dead ends: 819 [2019-10-14 23:18:16,815 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 23:18:16,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2019-10-14 23:18:16,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 771. [2019-10-14 23:18:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2019-10-14 23:18:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1047 transitions. [2019-10-14 23:18:16,883 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1047 transitions. Word has length 33 [2019-10-14 23:18:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:16,884 INFO L462 AbstractCegarLoop]: Abstraction has 771 states and 1047 transitions. [2019-10-14 23:18:16,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1047 transitions. [2019-10-14 23:18:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:18:16,891 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:16,891 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:16,891 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:16,892 INFO L82 PathProgramCache]: Analyzing trace with hash -535412243, now seen corresponding path program 1 times [2019-10-14 23:18:16,892 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:16,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080069998] [2019-10-14 23:18:16,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:16,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:16,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,075 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 23:18:17,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080069998] [2019-10-14 23:18:17,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:17,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:17,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413792842] [2019-10-14 23:18:17,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:17,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:17,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:17,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:17,078 INFO L87 Difference]: Start difference. First operand 771 states and 1047 transitions. Second operand 8 states. [2019-10-14 23:18:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:18,724 INFO L93 Difference]: Finished difference Result 865 states and 1163 transitions. [2019-10-14 23:18:18,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:18:18,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-14 23:18:18,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:18,730 INFO L225 Difference]: With dead ends: 865 [2019-10-14 23:18:18,731 INFO L226 Difference]: Without dead ends: 860 [2019-10-14 23:18:18,731 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2019-10-14 23:18:18,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 808. [2019-10-14 23:18:18,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-10-14 23:18:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1090 transitions. [2019-10-14 23:18:18,800 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1090 transitions. Word has length 38 [2019-10-14 23:18:18,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:18,802 INFO L462 AbstractCegarLoop]: Abstraction has 808 states and 1090 transitions. [2019-10-14 23:18:18,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1090 transitions. [2019-10-14 23:18:18,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:18:18,804 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:18,804 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:18,805 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:18,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1074736541, now seen corresponding path program 1 times [2019-10-14 23:18:18,805 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:18,805 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162379605] [2019-10-14 23:18:18,806 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:18,806 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:18,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:19,033 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 23:18:19,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162379605] [2019-10-14 23:18:19,034 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:19,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:19,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878010235] [2019-10-14 23:18:19,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:19,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:19,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:19,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:19,036 INFO L87 Difference]: Start difference. First operand 808 states and 1090 transitions. Second operand 6 states. [2019-10-14 23:18:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:20,689 INFO L93 Difference]: Finished difference Result 842 states and 1132 transitions. [2019-10-14 23:18:20,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:20,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-14 23:18:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:20,695 INFO L225 Difference]: With dead ends: 842 [2019-10-14 23:18:20,696 INFO L226 Difference]: Without dead ends: 839 [2019-10-14 23:18:20,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:18:20,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2019-10-14 23:18:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 819. [2019-10-14 23:18:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2019-10-14 23:18:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1104 transitions. [2019-10-14 23:18:20,751 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1104 transitions. Word has length 38 [2019-10-14 23:18:20,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:20,752 INFO L462 AbstractCegarLoop]: Abstraction has 819 states and 1104 transitions. [2019-10-14 23:18:20,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1104 transitions. [2019-10-14 23:18:20,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-14 23:18:20,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:20,753 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 23:18:20,754 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:20,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:20,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1325280387, now seen corresponding path program 1 times [2019-10-14 23:18:20,754 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:20,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135999288] [2019-10-14 23:18:20,755 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:20,755 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:20,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,960 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 23:18:20,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135999288] [2019-10-14 23:18:20,961 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:20,961 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:18:20,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619313611] [2019-10-14 23:18:20,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:18:20,962 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:20,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:18:20,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:20,962 INFO L87 Difference]: Start difference. First operand 819 states and 1104 transitions. Second operand 10 states. [2019-10-14 23:18:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:22,647 INFO L93 Difference]: Finished difference Result 882 states and 1184 transitions. [2019-10-14 23:18:22,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:18:22,648 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-10-14 23:18:22,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:22,653 INFO L225 Difference]: With dead ends: 882 [2019-10-14 23:18:22,653 INFO L226 Difference]: Without dead ends: 867 [2019-10-14 23:18:22,653 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:18:22,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2019-10-14 23:18:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 817. [2019-10-14 23:18:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2019-10-14 23:18:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1100 transitions. [2019-10-14 23:18:22,707 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1100 transitions. Word has length 40 [2019-10-14 23:18:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:22,708 INFO L462 AbstractCegarLoop]: Abstraction has 817 states and 1100 transitions. [2019-10-14 23:18:22,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:18:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1100 transitions. [2019-10-14 23:18:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 23:18:22,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:22,710 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:22,710 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:22,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1033738490, now seen corresponding path program 1 times [2019-10-14 23:18:22,710 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:22,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095152433] [2019-10-14 23:18:22,711 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:22,711 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:22,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,937 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 23:18:22,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095152433] [2019-10-14 23:18:22,938 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:22,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:18:22,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594565028] [2019-10-14 23:18:22,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:18:22,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:22,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:18:22,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:22,940 INFO L87 Difference]: Start difference. First operand 817 states and 1100 transitions. Second operand 10 states. [2019-10-14 23:18:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:25,213 INFO L93 Difference]: Finished difference Result 880 states and 1180 transitions. [2019-10-14 23:18:25,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:18:25,214 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2019-10-14 23:18:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:25,222 INFO L225 Difference]: With dead ends: 880 [2019-10-14 23:18:25,222 INFO L226 Difference]: Without dead ends: 860 [2019-10-14 23:18:25,223 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:18:25,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2019-10-14 23:18:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 810. [2019-10-14 23:18:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-10-14 23:18:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1091 transitions. [2019-10-14 23:18:25,279 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1091 transitions. Word has length 39 [2019-10-14 23:18:25,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:25,279 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1091 transitions. [2019-10-14 23:18:25,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:18:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1091 transitions. [2019-10-14 23:18:25,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:18:25,283 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:25,283 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 23:18:25,283 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:25,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:25,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1677893832, now seen corresponding path program 1 times [2019-10-14 23:18:25,284 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:25,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249682026] [2019-10-14 23:18:25,284 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:25,284 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:25,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,465 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 23:18:25,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249682026] [2019-10-14 23:18:25,467 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:25,467 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:18:25,468 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445144021] [2019-10-14 23:18:25,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:25,468 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:25,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:25,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:18:25,470 INFO L87 Difference]: Start difference. First operand 810 states and 1091 transitions. Second operand 7 states. [2019-10-14 23:18:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:27,905 INFO L93 Difference]: Finished difference Result 1192 states and 1615 transitions. [2019-10-14 23:18:27,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:18:27,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2019-10-14 23:18:27,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:27,912 INFO L225 Difference]: With dead ends: 1192 [2019-10-14 23:18:27,912 INFO L226 Difference]: Without dead ends: 1189 [2019-10-14 23:18:27,913 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 23:18:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2019-10-14 23:18:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 923. [2019-10-14 23:18:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2019-10-14 23:18:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1245 transitions. [2019-10-14 23:18:27,982 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1245 transitions. Word has length 44 [2019-10-14 23:18:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:27,982 INFO L462 AbstractCegarLoop]: Abstraction has 923 states and 1245 transitions. [2019-10-14 23:18:27,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:27,983 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1245 transitions. [2019-10-14 23:18:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-14 23:18:27,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:27,984 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 23:18:27,985 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:27,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:27,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2097381887, now seen corresponding path program 1 times [2019-10-14 23:18:27,985 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:27,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029967966] [2019-10-14 23:18:27,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:27,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:27,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:28,369 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 23:18:28,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029967966] [2019-10-14 23:18:28,370 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:28,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:18:28,371 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908102798] [2019-10-14 23:18:28,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:18:28,372 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:28,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:18:28,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:28,372 INFO L87 Difference]: Start difference. First operand 923 states and 1245 transitions. Second operand 13 states. [2019-10-14 23:18:32,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:32,344 INFO L93 Difference]: Finished difference Result 979 states and 1311 transitions. [2019-10-14 23:18:32,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:18:32,344 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2019-10-14 23:18:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:32,351 INFO L225 Difference]: With dead ends: 979 [2019-10-14 23:18:32,351 INFO L226 Difference]: Without dead ends: 973 [2019-10-14 23:18:32,352 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:18:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-14 23:18:32,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 923. [2019-10-14 23:18:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2019-10-14 23:18:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1244 transitions. [2019-10-14 23:18:32,465 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1244 transitions. Word has length 43 [2019-10-14 23:18:32,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:32,466 INFO L462 AbstractCegarLoop]: Abstraction has 923 states and 1244 transitions. [2019-10-14 23:18:32,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:18:32,466 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1244 transitions. [2019-10-14 23:18:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-14 23:18:32,468 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:32,469 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, 1, 1] [2019-10-14 23:18:32,469 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash 667497540, now seen corresponding path program 1 times [2019-10-14 23:18:32,470 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:32,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062319551] [2019-10-14 23:18:32,470 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:32,471 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:32,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:32,769 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 23:18:32,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062319551] [2019-10-14 23:18:32,770 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:32,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:32,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978762386] [2019-10-14 23:18:32,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:32,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:32,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:32,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:32,772 INFO L87 Difference]: Start difference. First operand 923 states and 1244 transitions. Second operand 8 states. [2019-10-14 23:18:35,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:35,537 INFO L93 Difference]: Finished difference Result 970 states and 1299 transitions. [2019-10-14 23:18:35,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:18:35,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-10-14 23:18:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:35,542 INFO L225 Difference]: With dead ends: 970 [2019-10-14 23:18:35,542 INFO L226 Difference]: Without dead ends: 948 [2019-10-14 23:18:35,543 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:18:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2019-10-14 23:18:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 925. [2019-10-14 23:18:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2019-10-14 23:18:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1246 transitions. [2019-10-14 23:18:35,620 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1246 transitions. Word has length 42 [2019-10-14 23:18:35,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:35,620 INFO L462 AbstractCegarLoop]: Abstraction has 925 states and 1246 transitions. [2019-10-14 23:18:35,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1246 transitions. [2019-10-14 23:18:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-14 23:18:35,622 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:35,622 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:35,622 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:35,623 INFO L82 PathProgramCache]: Analyzing trace with hash 237043572, now seen corresponding path program 1 times [2019-10-14 23:18:35,623 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:35,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247338388] [2019-10-14 23:18:35,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:35,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:35,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:35,909 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 23:18:35,909 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247338388] [2019-10-14 23:18:35,910 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:35,910 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:18:35,910 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116733415] [2019-10-14 23:18:35,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:18:35,911 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:35,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:18:35,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:35,912 INFO L87 Difference]: Start difference. First operand 925 states and 1246 transitions. Second operand 11 states. [2019-10-14 23:18:36,178 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2019-10-14 23:18:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:38,816 INFO L93 Difference]: Finished difference Result 1673 states and 2221 transitions. [2019-10-14 23:18:38,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:18:38,817 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2019-10-14 23:18:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:38,822 INFO L225 Difference]: With dead ends: 1673 [2019-10-14 23:18:38,822 INFO L226 Difference]: Without dead ends: 1120 [2019-10-14 23:18:38,824 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 23:18:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2019-10-14 23:18:38,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 916. [2019-10-14 23:18:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2019-10-14 23:18:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1225 transitions. [2019-10-14 23:18:38,898 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1225 transitions. Word has length 45 [2019-10-14 23:18:38,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:38,898 INFO L462 AbstractCegarLoop]: Abstraction has 916 states and 1225 transitions. [2019-10-14 23:18:38,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:18:38,899 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1225 transitions. [2019-10-14 23:18:38,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:18:38,900 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:38,900 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 23:18:38,900 INFO L410 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:38,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:38,901 INFO L82 PathProgramCache]: Analyzing trace with hash -266291307, now seen corresponding path program 1 times [2019-10-14 23:18:38,901 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:38,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298264594] [2019-10-14 23:18:38,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:38,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:38,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:39,218 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 23:18:39,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298264594] [2019-10-14 23:18:39,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:39,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:18:39,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324563147] [2019-10-14 23:18:39,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:18:39,220 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:39,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:18:39,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:39,221 INFO L87 Difference]: Start difference. First operand 916 states and 1225 transitions. Second operand 13 states.