/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:16:58,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:16:58,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:16:58,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:16:58,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:16:58,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:16:58,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:16:58,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:16:58,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:16:58,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:16:58,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:16:58,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:16:58,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:16:58,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:16:58,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:16:58,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:16:58,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:16:58,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:16:58,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:16:58,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:16:58,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:16:58,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:16:58,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:16:58,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:16:58,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:16:58,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:16:58,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:16:58,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:16:58,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:16:58,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:16:58,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:16:58,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:16:58,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:16:58,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:16:58,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:16:58,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:16:58,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:16:58,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:16:58,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:16:58,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:16:58,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:16:58,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:16:58,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:16:58,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:16:58,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:16:58,490 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:16:58,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:16:58,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:16:58,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:16:58,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:16:58,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:16:58,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:16:58,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:16:58,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:16:58,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:16:58,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:16:58,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:16:58,492 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:16:58,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:16:58,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:16:58,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:16:58,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:16:58,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:16:58,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:16:58,494 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:16:58,494 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:16:58,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:16:58,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:16:58,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:16:58,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:16:58,941 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:16:58,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2021-02-24 04:16:59,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab7eac2a/280034b6dd454273b52de182d23853b1/FLAG6dd0d619b [2021-02-24 04:16:59,763 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:16:59,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2021-02-24 04:16:59,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab7eac2a/280034b6dd454273b52de182d23853b1/FLAG6dd0d619b [2021-02-24 04:17:00,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab7eac2a/280034b6dd454273b52de182d23853b1 [2021-02-24 04:17:00,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:17:00,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:17:00,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:17:00,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:17:00,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:17:00,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:17:00" (1/1) ... [2021-02-24 04:17:00,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ccc1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00, skipping insertion in model container [2021-02-24 04:17:00,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:17:00" (1/1) ... [2021-02-24 04:17:00,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:17:00,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:17:00,629 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c[29656,29669] [2021-02-24 04:17:00,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:17:00,647 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:17:00,761 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c[29656,29669] [2021-02-24 04:17:00,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:17:00,797 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:17:00,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00 WrapperNode [2021-02-24 04:17:00,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:17:00,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:17:00,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:17:00,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:17:00,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00" (1/1) ... [2021-02-24 04:17:00,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00" (1/1) ... [2021-02-24 04:17:00,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00" (1/1) ... [2021-02-24 04:17:00,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00" (1/1) ... [2021-02-24 04:17:00,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00" (1/1) ... [2021-02-24 04:17:00,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00" (1/1) ... [2021-02-24 04:17:00,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00" (1/1) ... [2021-02-24 04:17:00,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:17:00,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:17:00,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:17:00,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:17:00,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00" (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 [2021-02-24 04:17:01,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:17:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:17:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:17:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-02-24 04:17:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-02-24 04:17:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2021-02-24 04:17:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:17:01,171 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-02-24 04:17:01,171 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-02-24 04:17:01,172 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-02-24 04:17:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-02-24 04:17:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-02-24 04:17:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2021-02-24 04:17:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2021-02-24 04:17:01,174 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2021-02-24 04:17:01,174 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2021-02-24 04:17:01,174 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2021-02-24 04:17:01,175 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2021-02-24 04:17:01,176 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-02-24 04:17:01,178 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:17:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:17:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:17:01,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:17:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-24 04:17:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:17:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-02-24 04:17:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2021-02-24 04:17:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-02-24 04:17:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-02-24 04:17:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-02-24 04:17:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2021-02-24 04:17:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2021-02-24 04:17:01,181 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2021-02-24 04:17:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2021-02-24 04:17:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2021-02-24 04:17:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2021-02-24 04:17:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-02-24 04:17:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-02-24 04:17:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-02-24 04:17:01,182 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-02-24 04:17:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:17:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-02-24 04:17:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:17:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:17:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:17:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:17:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:17:01,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:17:01,664 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-24 04:17:01,893 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-02-24 04:17:01,893 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-02-24 04:17:01,907 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-24 04:17:02,020 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-02-24 04:17:02,021 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-02-24 04:17:02,236 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-24 04:17:02,264 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-02-24 04:17:02,264 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-02-24 04:17:02,276 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-24 04:17:02,450 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2021-02-24 04:17:02,451 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2021-02-24 04:17:02,459 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-24 04:17:02,542 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-02-24 04:17:02,543 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-02-24 04:17:02,553 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-24 04:17:02,595 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-02-24 04:17:02,595 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-02-24 04:17:02,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:17:02,688 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:17:02,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:17:02 BoogieIcfgContainer [2021-02-24 04:17:02,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:17:02,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:17:02,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:17:02,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:17:02,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:17:00" (1/3) ... [2021-02-24 04:17:02,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e9e473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:17:02, skipping insertion in model container [2021-02-24 04:17:02,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:00" (2/3) ... [2021-02-24 04:17:02,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e9e473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:17:02, skipping insertion in model container [2021-02-24 04:17:02,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:17:02" (3/3) ... [2021-02-24 04:17:02,702 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2021-02-24 04:17:02,709 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:17:02,715 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:17:02,737 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:17:02,763 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:17:02,763 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:17:02,763 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:17:02,763 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:17:02,763 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:17:02,763 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:17:02,764 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:17:02,764 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:17:02,798 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states. [2021-02-24 04:17:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-02-24 04:17:02,813 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:02,815 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:02,815 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:02,823 INFO L82 PathProgramCache]: Analyzing trace with hash 527172370, now seen corresponding path program 1 times [2021-02-24 04:17:02,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:02,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622835250] [2021-02-24 04:17:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:02,921 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:03,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:03,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:03,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:03,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:03,262 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-24 04:17:03,262 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-24 04:17:03,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:03,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:03,378 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-02-24 04:17:03,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:03,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:03,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:03,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:03,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:03,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:03,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622835250] [2021-02-24 04:17:03,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:03,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:17:03,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923262043] [2021-02-24 04:17:03,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:17:03,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:03,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:17:03,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:17:03,563 INFO L87 Difference]: Start difference. First operand 676 states. Second operand 5 states. [2021-02-24 04:17:06,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:06,346 INFO L93 Difference]: Finished difference Result 1045 states and 1256 transitions. [2021-02-24 04:17:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:17:06,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2021-02-24 04:17:06,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:06,368 INFO L225 Difference]: With dead ends: 1045 [2021-02-24 04:17:06,369 INFO L226 Difference]: Without dead ends: 717 [2021-02-24 04:17:06,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:17:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-02-24 04:17:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 663. [2021-02-24 04:17:06,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2021-02-24 04:17:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 758 transitions. [2021-02-24 04:17:06,583 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 758 transitions. Word has length 93 [2021-02-24 04:17:06,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:06,584 INFO L480 AbstractCegarLoop]: Abstraction has 663 states and 758 transitions. [2021-02-24 04:17:06,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:17:06,584 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 758 transitions. [2021-02-24 04:17:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-02-24 04:17:06,590 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:06,590 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:06,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:17:06,591 INFO L428 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:06,592 INFO L82 PathProgramCache]: Analyzing trace with hash -656286405, now seen corresponding path program 1 times [2021-02-24 04:17:06,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:06,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793627562] [2021-02-24 04:17:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:06,597 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:06,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:06,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:06,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:06,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:06,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:06,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:06,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:06,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:06,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:06,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:06,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:07,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793627562] [2021-02-24 04:17:07,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:07,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:17:07,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666821930] [2021-02-24 04:17:07,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:17:07,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:07,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:17:07,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:17:07,025 INFO L87 Difference]: Start difference. First operand 663 states and 758 transitions. Second operand 6 states. [2021-02-24 04:17:09,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:09,603 INFO L93 Difference]: Finished difference Result 984 states and 1139 transitions. [2021-02-24 04:17:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 04:17:09,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2021-02-24 04:17:09,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:09,612 INFO L225 Difference]: With dead ends: 984 [2021-02-24 04:17:09,613 INFO L226 Difference]: Without dead ends: 893 [2021-02-24 04:17:09,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:17:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-02-24 04:17:09,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 814. [2021-02-24 04:17:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2021-02-24 04:17:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 925 transitions. [2021-02-24 04:17:09,766 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 925 transitions. Word has length 144 [2021-02-24 04:17:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:09,767 INFO L480 AbstractCegarLoop]: Abstraction has 814 states and 925 transitions. [2021-02-24 04:17:09,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:17:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 925 transitions. [2021-02-24 04:17:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-24 04:17:09,771 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:09,772 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:09,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:17:09,772 INFO L428 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:09,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:09,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1344061166, now seen corresponding path program 1 times [2021-02-24 04:17:09,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:09,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579173109] [2021-02-24 04:17:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:09,777 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:09,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:09,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:09,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:09,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:09,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:09,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:09,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:09,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:10,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:10,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:10,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:10,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:10,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:10,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:10,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:10,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:10,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:10,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:10,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579173109] [2021-02-24 04:17:10,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:10,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:17:10,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178478336] [2021-02-24 04:17:10,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:17:10,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:10,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:17:10,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:17:10,172 INFO L87 Difference]: Start difference. First operand 814 states and 925 transitions. Second operand 6 states. [2021-02-24 04:17:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:12,103 INFO L93 Difference]: Finished difference Result 1141 states and 1301 transitions. [2021-02-24 04:17:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 04:17:12,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2021-02-24 04:17:12,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:12,110 INFO L225 Difference]: With dead ends: 1141 [2021-02-24 04:17:12,111 INFO L226 Difference]: Without dead ends: 915 [2021-02-24 04:17:12,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:17:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-02-24 04:17:12,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 889. [2021-02-24 04:17:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2021-02-24 04:17:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1011 transitions. [2021-02-24 04:17:12,257 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1011 transitions. Word has length 166 [2021-02-24 04:17:12,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:12,258 INFO L480 AbstractCegarLoop]: Abstraction has 889 states and 1011 transitions. [2021-02-24 04:17:12,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:17:12,258 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1011 transitions. [2021-02-24 04:17:12,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-24 04:17:12,261 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:12,261 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:12,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:17:12,261 INFO L428 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:12,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1334790231, now seen corresponding path program 1 times [2021-02-24 04:17:12,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:12,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692999888] [2021-02-24 04:17:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:12,266 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:12,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:12,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:12,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:12,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:12,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:12,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:12,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:12,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:12,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:12,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:12,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:12,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692999888] [2021-02-24 04:17:12,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:12,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:17:12,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483105532] [2021-02-24 04:17:12,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:17:12,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:12,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:17:12,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:17:12,687 INFO L87 Difference]: Start difference. First operand 889 states and 1011 transitions. Second operand 6 states. [2021-02-24 04:17:15,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:15,147 INFO L93 Difference]: Finished difference Result 893 states and 1014 transitions. [2021-02-24 04:17:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:17:15,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-24 04:17:15,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:15,153 INFO L225 Difference]: With dead ends: 893 [2021-02-24 04:17:15,154 INFO L226 Difference]: Without dead ends: 889 [2021-02-24 04:17:15,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:17:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-02-24 04:17:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 888. [2021-02-24 04:17:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2021-02-24 04:17:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1008 transitions. [2021-02-24 04:17:15,313 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1008 transitions. Word has length 170 [2021-02-24 04:17:15,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:15,314 INFO L480 AbstractCegarLoop]: Abstraction has 888 states and 1008 transitions. [2021-02-24 04:17:15,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:17:15,314 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1008 transitions. [2021-02-24 04:17:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-24 04:17:15,319 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:15,319 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:15,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:17:15,320 INFO L428 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:15,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:15,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1401291032, now seen corresponding path program 1 times [2021-02-24 04:17:15,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:15,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683614122] [2021-02-24 04:17:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:15,325 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:15,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:15,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:17:15,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:15,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:15,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:15,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:15,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:17:15,558 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 04:17:15,559 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 04:17:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:15,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:15,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-02-24 04:17:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:15,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:15,626 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-24 04:17:15,627 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-24 04:17:15,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:17:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:15,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:15,690 WARN L141 QuantifierPusher]: treesize reduction 23, result has 48.9 percent of original size [2021-02-24 04:17:15,692 WARN L147 QuantifierPusher]: treesize reduction 23, result has 48.9 percent of original size 22 [2021-02-24 04:17:15,724 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-24 04:17:15,725 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-24 04:17:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-24 04:17:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:15,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:15,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:15,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:15,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683614122] [2021-02-24 04:17:15,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:15,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 04:17:15,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920930741] [2021-02-24 04:17:15,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 04:17:15,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 04:17:15,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:17:15,873 INFO L87 Difference]: Start difference. First operand 888 states and 1008 transitions. Second operand 14 states. [2021-02-24 04:17:17,338 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2021-02-24 04:17:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:19,496 INFO L93 Difference]: Finished difference Result 1021 states and 1155 transitions. [2021-02-24 04:17:19,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-24 04:17:19,496 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 200 [2021-02-24 04:17:19,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:19,509 INFO L225 Difference]: With dead ends: 1021 [2021-02-24 04:17:19,509 INFO L226 Difference]: Without dead ends: 943 [2021-02-24 04:17:19,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2021-02-24 04:17:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-02-24 04:17:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 893. [2021-02-24 04:17:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2021-02-24 04:17:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1009 transitions. [2021-02-24 04:17:19,677 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1009 transitions. Word has length 200 [2021-02-24 04:17:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:19,678 INFO L480 AbstractCegarLoop]: Abstraction has 893 states and 1009 transitions. [2021-02-24 04:17:19,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 04:17:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1009 transitions. [2021-02-24 04:17:19,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-02-24 04:17:19,682 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:19,682 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:19,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:17:19,683 INFO L428 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:19,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:19,684 INFO L82 PathProgramCache]: Analyzing trace with hash 225944593, now seen corresponding path program 1 times [2021-02-24 04:17:19,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:19,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197519319] [2021-02-24 04:17:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:19,687 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:19,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:19,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:19,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:19,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:19,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:19,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:19,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:19,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-02-24 04:17:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:19,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:19,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:17:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:19,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:19,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:19,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-24 04:17:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:19,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:19,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:19,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:19,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:20,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197519319] [2021-02-24 04:17:20,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:20,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 04:17:20,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366983810] [2021-02-24 04:17:20,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 04:17:20,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:20,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 04:17:20,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:17:20,054 INFO L87 Difference]: Start difference. First operand 893 states and 1009 transitions. Second operand 8 states. [2021-02-24 04:17:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:22,648 INFO L93 Difference]: Finished difference Result 1079 states and 1230 transitions. [2021-02-24 04:17:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 04:17:22,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2021-02-24 04:17:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:22,655 INFO L225 Difference]: With dead ends: 1079 [2021-02-24 04:17:22,655 INFO L226 Difference]: Without dead ends: 940 [2021-02-24 04:17:22,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:17:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-02-24 04:17:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 899. [2021-02-24 04:17:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2021-02-24 04:17:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1018 transitions. [2021-02-24 04:17:22,827 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1018 transitions. Word has length 202 [2021-02-24 04:17:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:22,828 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1018 transitions. [2021-02-24 04:17:22,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 04:17:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1018 transitions. [2021-02-24 04:17:22,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-02-24 04:17:22,833 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:22,834 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:22,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:17:22,834 INFO L428 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:22,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2079003683, now seen corresponding path program 1 times [2021-02-24 04:17:22,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:22,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522771495] [2021-02-24 04:17:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:22,839 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:22,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:22,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:22,938 WARN L141 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-02-24 04:17:22,939 WARN L147 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size 8 [2021-02-24 04:17:22,946 WARN L141 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-02-24 04:17:22,947 WARN L147 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size 8 [2021-02-24 04:17:22,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:22,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:23,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:23,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:23,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:23,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:23,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:23,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:23,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:23,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:17:23,141 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 04:17:23,144 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 04:17:23,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:23,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:23,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:23,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-24 04:17:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:23,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:23,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:23,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:23,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:17:23,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:17:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:23,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:23,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:23,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:23,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:23,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-24 04:17:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:23,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:23,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:23,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:23,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:23,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522771495] [2021-02-24 04:17:23,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:23,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:17:23,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935741870] [2021-02-24 04:17:23,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:17:23,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:23,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:17:23,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:17:23,367 INFO L87 Difference]: Start difference. First operand 899 states and 1018 transitions. Second operand 13 states. [2021-02-24 04:17:24,082 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2021-02-24 04:17:24,388 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-02-24 04:17:24,585 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-24 04:17:26,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:26,730 INFO L93 Difference]: Finished difference Result 941 states and 1065 transitions. [2021-02-24 04:17:26,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:17:26,731 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 197 [2021-02-24 04:17:26,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:26,737 INFO L225 Difference]: With dead ends: 941 [2021-02-24 04:17:26,738 INFO L226 Difference]: Without dead ends: 933 [2021-02-24 04:17:26,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2021-02-24 04:17:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-02-24 04:17:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 904. [2021-02-24 04:17:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2021-02-24 04:17:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1024 transitions. [2021-02-24 04:17:26,925 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1024 transitions. Word has length 197 [2021-02-24 04:17:26,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:26,926 INFO L480 AbstractCegarLoop]: Abstraction has 904 states and 1024 transitions. [2021-02-24 04:17:26,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:17:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1024 transitions. [2021-02-24 04:17:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-02-24 04:17:26,930 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:26,930 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:26,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:17:26,931 INFO L428 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:26,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1433078497, now seen corresponding path program 1 times [2021-02-24 04:17:26,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:26,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569059502] [2021-02-24 04:17:26,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:26,935 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:27,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:27,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:27,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:27,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:17:27,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:27,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:27,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:27,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:27,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:27,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:27,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:27,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:27,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:27,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:27,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-24 04:17:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:27,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:27,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:17:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:27,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:27,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:27,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-24 04:17:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:27,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:27,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:27,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569059502] [2021-02-24 04:17:27,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:27,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 04:17:27,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5059416] [2021-02-24 04:17:27,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 04:17:27,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:27,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 04:17:27,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:17:27,281 INFO L87 Difference]: Start difference. First operand 904 states and 1024 transitions. Second operand 8 states. [2021-02-24 04:17:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:28,602 INFO L93 Difference]: Finished difference Result 928 states and 1052 transitions. [2021-02-24 04:17:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:17:28,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2021-02-24 04:17:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:28,608 INFO L225 Difference]: With dead ends: 928 [2021-02-24 04:17:28,608 INFO L226 Difference]: Without dead ends: 908 [2021-02-24 04:17:28,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:17:28,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-02-24 04:17:28,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 899. [2021-02-24 04:17:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2021-02-24 04:17:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1015 transitions. [2021-02-24 04:17:28,805 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1015 transitions. Word has length 197 [2021-02-24 04:17:28,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:28,806 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1015 transitions. [2021-02-24 04:17:28,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 04:17:28,806 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1015 transitions. [2021-02-24 04:17:28,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-24 04:17:28,810 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:28,810 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:28,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:17:28,811 INFO L428 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:28,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:28,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1483697005, now seen corresponding path program 1 times [2021-02-24 04:17:28,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:28,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206663118] [2021-02-24 04:17:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:28,820 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:28,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:28,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:28,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:28,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:28,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:28,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:28,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:28,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:28,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:28,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:28,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:29,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:29,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:29,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:29,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-24 04:17:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:29,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:29,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:29,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:29,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:29,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:17:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:29,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:29,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:29,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:29,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-24 04:17:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:29,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:29,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:29,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:29,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:29,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206663118] [2021-02-24 04:17:29,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:29,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-24 04:17:29,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414422890] [2021-02-24 04:17:29,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 04:17:29,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:29,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 04:17:29,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:17:29,296 INFO L87 Difference]: Start difference. First operand 899 states and 1015 transitions. Second operand 17 states. [2021-02-24 04:17:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:33,596 INFO L93 Difference]: Finished difference Result 926 states and 1044 transitions. [2021-02-24 04:17:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 04:17:33,597 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 198 [2021-02-24 04:17:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:33,603 INFO L225 Difference]: With dead ends: 926 [2021-02-24 04:17:33,603 INFO L226 Difference]: Without dead ends: 901 [2021-02-24 04:17:33,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2021-02-24 04:17:33,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2021-02-24 04:17:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 892. [2021-02-24 04:17:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2021-02-24 04:17:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1005 transitions. [2021-02-24 04:17:33,812 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1005 transitions. Word has length 198 [2021-02-24 04:17:33,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:33,812 INFO L480 AbstractCegarLoop]: Abstraction has 892 states and 1005 transitions. [2021-02-24 04:17:33,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 04:17:33,813 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1005 transitions. [2021-02-24 04:17:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-02-24 04:17:33,817 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:33,817 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:33,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:17:33,818 INFO L428 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:33,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:33,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1648271953, now seen corresponding path program 1 times [2021-02-24 04:17:33,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:33,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538144156] [2021-02-24 04:17:33,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:33,827 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:33,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:33,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:33,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:33,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:33,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:33,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:33,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:33,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:33,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:33,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:33,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:34,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:34,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:34,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:34,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:34,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:34,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:34,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-02-24 04:17:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:34,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:34,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:34,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:34,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:34,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:34,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:34,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:34,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 04:17:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:34,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:34,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:34,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:34,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:34,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:34,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:34,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538144156] [2021-02-24 04:17:34,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:34,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:17:34,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453519925] [2021-02-24 04:17:34,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:17:34,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:34,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:17:34,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:17:34,224 INFO L87 Difference]: Start difference. First operand 892 states and 1005 transitions. Second operand 13 states. [2021-02-24 04:17:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:37,790 INFO L93 Difference]: Finished difference Result 919 states and 1034 transitions. [2021-02-24 04:17:37,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 04:17:37,797 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 201 [2021-02-24 04:17:37,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:37,803 INFO L225 Difference]: With dead ends: 919 [2021-02-24 04:17:37,804 INFO L226 Difference]: Without dead ends: 805 [2021-02-24 04:17:37,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:17:37,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-02-24 04:17:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 796. [2021-02-24 04:17:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2021-02-24 04:17:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 899 transitions. [2021-02-24 04:17:37,968 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 899 transitions. Word has length 201 [2021-02-24 04:17:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:37,969 INFO L480 AbstractCegarLoop]: Abstraction has 796 states and 899 transitions. [2021-02-24 04:17:37,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:17:37,969 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 899 transitions. [2021-02-24 04:17:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-02-24 04:17:37,973 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:37,973 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:37,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 04:17:37,974 INFO L428 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:37,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:37,975 INFO L82 PathProgramCache]: Analyzing trace with hash -151446723, now seen corresponding path program 1 times [2021-02-24 04:17:37,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:37,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709034258] [2021-02-24 04:17:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:37,979 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:38,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:38,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:38,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:38,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:38,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:38,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:38,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:38,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:38,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:38,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-02-24 04:17:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:38,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:38,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:38,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:38,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:38,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:17:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:38,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:38,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:38,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:38,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:38,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-24 04:17:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:38,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:38,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:38,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:38,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:38,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709034258] [2021-02-24 04:17:38,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:38,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-24 04:17:38,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819384308] [2021-02-24 04:17:38,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 04:17:38,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:38,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 04:17:38,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:17:38,502 INFO L87 Difference]: Start difference. First operand 796 states and 899 transitions. Second operand 17 states. [2021-02-24 04:17:42,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:42,212 INFO L93 Difference]: Finished difference Result 823 states and 928 transitions. [2021-02-24 04:17:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 04:17:42,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 203 [2021-02-24 04:17:42,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:42,217 INFO L225 Difference]: With dead ends: 823 [2021-02-24 04:17:42,217 INFO L226 Difference]: Without dead ends: 766 [2021-02-24 04:17:42,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2021-02-24 04:17:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-02-24 04:17:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 757. [2021-02-24 04:17:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2021-02-24 04:17:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 854 transitions. [2021-02-24 04:17:42,360 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 854 transitions. Word has length 203 [2021-02-24 04:17:42,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:42,360 INFO L480 AbstractCegarLoop]: Abstraction has 757 states and 854 transitions. [2021-02-24 04:17:42,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 04:17:42,360 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 854 transitions. [2021-02-24 04:17:42,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-24 04:17:42,364 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:42,364 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:42,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 04:17:42,365 INFO L428 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash -2062563398, now seen corresponding path program 1 times [2021-02-24 04:17:42,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:42,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336497988] [2021-02-24 04:17:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:42,369 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:42,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:42,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:42,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:42,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:42,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:42,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:42,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:42,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:42,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:42,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:42,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:42,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:42,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:42,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:42,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:42,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-24 04:17:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:42,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:42,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:42,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:42,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:42,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336497988] [2021-02-24 04:17:42,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:42,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 04:17:42,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578352097] [2021-02-24 04:17:42,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 04:17:42,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:42,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 04:17:42,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:17:42,654 INFO L87 Difference]: Start difference. First operand 757 states and 854 transitions. Second operand 8 states. [2021-02-24 04:17:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:45,209 INFO L93 Difference]: Finished difference Result 812 states and 911 transitions. [2021-02-24 04:17:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:17:45,210 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2021-02-24 04:17:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:45,214 INFO L225 Difference]: With dead ends: 812 [2021-02-24 04:17:45,214 INFO L226 Difference]: Without dead ends: 704 [2021-02-24 04:17:45,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:17:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-02-24 04:17:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 676. [2021-02-24 04:17:45,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2021-02-24 04:17:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 756 transitions. [2021-02-24 04:17:45,349 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 756 transitions. Word has length 205 [2021-02-24 04:17:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:45,350 INFO L480 AbstractCegarLoop]: Abstraction has 676 states and 756 transitions. [2021-02-24 04:17:45,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 04:17:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 756 transitions. [2021-02-24 04:17:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-02-24 04:17:45,354 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:45,354 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:45,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 04:17:45,355 INFO L428 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:45,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:45,355 INFO L82 PathProgramCache]: Analyzing trace with hash 299365844, now seen corresponding path program 1 times [2021-02-24 04:17:45,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:45,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927405746] [2021-02-24 04:17:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:45,359 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:45,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:45,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:45,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:45,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:45,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:45,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:45,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:45,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:45,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:45,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-02-24 04:17:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:45,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:45,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:45,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:45,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:45,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-24 04:17:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:45,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:45,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:45,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:45,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:45,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927405746] [2021-02-24 04:17:45,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:45,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 04:17:45,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500984421] [2021-02-24 04:17:45,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 04:17:45,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:45,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 04:17:45,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:17:45,753 INFO L87 Difference]: Start difference. First operand 676 states and 756 transitions. Second operand 14 states. [2021-02-24 04:17:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:48,928 INFO L93 Difference]: Finished difference Result 715 states and 797 transitions. [2021-02-24 04:17:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 04:17:48,934 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 212 [2021-02-24 04:17:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:48,938 INFO L225 Difference]: With dead ends: 715 [2021-02-24 04:17:48,939 INFO L226 Difference]: Without dead ends: 669 [2021-02-24 04:17:48,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-02-24 04:17:48,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-02-24 04:17:49,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 660. [2021-02-24 04:17:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2021-02-24 04:17:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 737 transitions. [2021-02-24 04:17:49,067 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 737 transitions. Word has length 212 [2021-02-24 04:17:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:49,068 INFO L480 AbstractCegarLoop]: Abstraction has 660 states and 737 transitions. [2021-02-24 04:17:49,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 04:17:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 737 transitions. [2021-02-24 04:17:49,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-02-24 04:17:49,071 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:49,071 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:49,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 04:17:49,072 INFO L428 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:49,072 INFO L82 PathProgramCache]: Analyzing trace with hash -133726549, now seen corresponding path program 1 times [2021-02-24 04:17:49,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:49,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267902492] [2021-02-24 04:17:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:49,076 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:49,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:49,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:49,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:49,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:49,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:49,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:49,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:49,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:49,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:49,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:49,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-02-24 04:17:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:49,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:49,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:49,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:49,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:49,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-24 04:17:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:49,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:49,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:49,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:17:49,438 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-24 04:17:49,439 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-24 04:17:49,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:49,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267902492] [2021-02-24 04:17:49,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:49,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:17:49,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910607250] [2021-02-24 04:17:49,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:17:49,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:49,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:17:49,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:17:49,506 INFO L87 Difference]: Start difference. First operand 660 states and 737 transitions. Second operand 13 states. [2021-02-24 04:17:50,452 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-24 04:17:51,205 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-24 04:17:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:52,551 INFO L93 Difference]: Finished difference Result 910 states and 1018 transitions. [2021-02-24 04:17:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 04:17:52,552 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 213 [2021-02-24 04:17:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:52,557 INFO L225 Difference]: With dead ends: 910 [2021-02-24 04:17:52,558 INFO L226 Difference]: Without dead ends: 874 [2021-02-24 04:17:52,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2021-02-24 04:17:52,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-02-24 04:17:52,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 674. [2021-02-24 04:17:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2021-02-24 04:17:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 754 transitions. [2021-02-24 04:17:52,709 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 754 transitions. Word has length 213 [2021-02-24 04:17:52,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:52,710 INFO L480 AbstractCegarLoop]: Abstraction has 674 states and 754 transitions. [2021-02-24 04:17:52,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:17:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 754 transitions. [2021-02-24 04:17:52,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-02-24 04:17:52,713 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:52,713 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:52,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-24 04:17:52,713 INFO L428 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:52,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1609640836, now seen corresponding path program 1 times [2021-02-24 04:17:52,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:52,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938585354] [2021-02-24 04:17:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:52,717 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:52,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:52,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:52,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:52,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:52,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:52,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:52,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:52,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:52,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:52,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-02-24 04:17:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:52,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:52,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:52,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:52,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:52,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-24 04:17:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:53,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:53,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:53,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:53,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:53,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:53,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:53,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938585354] [2021-02-24 04:17:53,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:53,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 04:17:53,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482429959] [2021-02-24 04:17:53,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 04:17:53,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:53,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 04:17:53,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:17:53,104 INFO L87 Difference]: Start difference. First operand 674 states and 754 transitions. Second operand 14 states. [2021-02-24 04:17:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:56,404 INFO L93 Difference]: Finished difference Result 713 states and 795 transitions. [2021-02-24 04:17:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 04:17:56,405 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 213 [2021-02-24 04:17:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:56,408 INFO L225 Difference]: With dead ends: 713 [2021-02-24 04:17:56,408 INFO L226 Difference]: Without dead ends: 650 [2021-02-24 04:17:56,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-02-24 04:17:56,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-02-24 04:17:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 641. [2021-02-24 04:17:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2021-02-24 04:17:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 698 transitions. [2021-02-24 04:17:56,547 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 698 transitions. Word has length 213 [2021-02-24 04:17:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:56,548 INFO L480 AbstractCegarLoop]: Abstraction has 641 states and 698 transitions. [2021-02-24 04:17:56,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 04:17:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 698 transitions. [2021-02-24 04:17:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-02-24 04:17:56,551 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:56,551 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:56,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-24 04:17:56,551 INFO L428 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:56,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1055802081, now seen corresponding path program 1 times [2021-02-24 04:17:56,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:56,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988634848] [2021-02-24 04:17:56,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:56,555 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:56,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:56,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:56,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:56,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:17:56,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:56,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:17:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:56,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:56,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:56,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-24 04:17:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:56,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:56,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-24 04:17:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:56,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:56,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:56,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-24 04:17:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:56,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:56,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:56,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-02-24 04:17:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:56,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:56,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:56,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-02-24 04:17:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:17:56,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:56,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:17:56,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:17:56,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:17:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:17:56,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988634848] [2021-02-24 04:17:56,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:17:56,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 04:17:56,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239283020] [2021-02-24 04:17:56,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 04:17:56,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:17:56,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 04:17:56,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:17:56,849 INFO L87 Difference]: Start difference. First operand 641 states and 698 transitions. Second operand 8 states. [2021-02-24 04:17:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:17:58,197 INFO L93 Difference]: Finished difference Result 764 states and 838 transitions. [2021-02-24 04:17:58,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:17:58,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2021-02-24 04:17:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:17:58,202 INFO L225 Difference]: With dead ends: 764 [2021-02-24 04:17:58,202 INFO L226 Difference]: Without dead ends: 668 [2021-02-24 04:17:58,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:17:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-02-24 04:17:58,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 637. [2021-02-24 04:17:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2021-02-24 04:17:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 691 transitions. [2021-02-24 04:17:58,374 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 691 transitions. Word has length 221 [2021-02-24 04:17:58,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:17:58,375 INFO L480 AbstractCegarLoop]: Abstraction has 637 states and 691 transitions. [2021-02-24 04:17:58,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 04:17:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 691 transitions. [2021-02-24 04:17:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-02-24 04:17:58,379 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:17:58,379 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:17:58,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-24 04:17:58,380 INFO L428 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:17:58,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:17:58,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1803568816, now seen corresponding path program 1 times [2021-02-24 04:17:58,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:17:58,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147147350] [2021-02-24 04:17:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:17:58,385 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:17:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:17:58,410 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:17:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:17:58,438 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:17:58,579 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:17:58,579 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:17:58,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-24 04:17:58,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:17:58 BoogieIcfgContainer [2021-02-24 04:17:58,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:17:58,619 INFO L168 Benchmark]: Toolchain (without parser) took 58522.90 ms. Allocated memory was 151.0 MB in the beginning and 557.8 MB in the end (delta: 406.8 MB). Free memory was 127.7 MB in the beginning and 447.0 MB in the end (delta: -319.3 MB). Peak memory consumption was 87.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:17:58,619 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 124.5 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:17:58,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.54 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 107.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:17:58,620 INFO L168 Benchmark]: Boogie Preprocessor took 156.71 ms. Allocated memory is still 151.0 MB. Free memory was 107.9 MB in the beginning and 104.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:17:58,620 INFO L168 Benchmark]: RCFGBuilder took 1732.67 ms. Allocated memory is still 151.0 MB. Free memory was 104.8 MB in the beginning and 114.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:17:58,620 INFO L168 Benchmark]: TraceAbstraction took 55923.86 ms. Allocated memory was 151.0 MB in the beginning and 557.8 MB in the end (delta: 406.8 MB). Free memory was 114.4 MB in the beginning and 447.0 MB in the end (delta: -332.5 MB). Peak memory consumption was 74.3 MB. Max. memory is 8.0 GB. [2021-02-24 04:17:58,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 124.5 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 683.54 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 107.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 156.71 ms. Allocated memory is still 151.0 MB. Free memory was 107.9 MB in the beginning and 104.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1732.67 ms. Allocated memory is still 151.0 MB. Free memory was 104.8 MB in the beginning and 114.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 55923.86 ms. Allocated memory was 151.0 MB in the beginning and 557.8 MB in the end (delta: 406.8 MB). Free memory was 114.4 MB in the beginning and 447.0 MB in the end (delta: -332.5 MB). Peak memory consumption was 74.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1013]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int KernelMode ; [L24] int Executive ; [L25] int DevicePowerState ; [L26] int s ; [L27] int UNLOADED ; [L28] int NP ; [L29] int DC ; [L30] int SKIP1 ; [L31] int SKIP2 ; [L32] int MPR1 ; [L33] int MPR3 ; [L34] int IPC ; [L35] int pended ; [L36] int compFptr ; [L37] int compRegistered ; [L38] int lowerDriverReturn ; [L39] int setEventCalled ; [L40] int customIrp ; [L41] int myStatus ; [L294] int status ; [L295] int irp = __VERIFIER_nondet_int() ; [L296] int pirp ; [L297] int pirp__IoStatus__Status ; [L298] int irp_choice = __VERIFIER_nondet_int() ; [L299] int devobj = __VERIFIER_nondet_int() ; [L300] int __cil_tmp8 ; [L302] KernelMode = 0 [L303] Executive = 0 [L304] DevicePowerState = 1 [L305] s = 0 [L306] UNLOADED = 0 [L307] NP = 0 [L308] DC = 0 [L309] SKIP1 = 0 [L310] SKIP2 = 0 [L311] MPR1 = 0 [L312] MPR3 = 0 [L313] IPC = 0 [L314] pended = 0 [L315] compFptr = 0 [L316] compRegistered = 0 [L317] lowerDriverReturn = 0 [L318] setEventCalled = 0 [L319] customIrp = 0 [L320] myStatus = 0 [L324] status = 0 [L325] pirp = irp [L326] CALL _BLAST_init() [L61] UNLOADED = 0 [L62] NP = 1 [L63] DC = 2 [L64] SKIP1 = 3 [L65] SKIP2 = 4 [L66] MPR1 = 5 [L67] MPR3 = 6 [L68] IPC = 7 [L69] s = UNLOADED [L70] pended = 0 [L71] compFptr = 0 [L72] compRegistered = 0 [L73] lowerDriverReturn = 0 [L74] setEventCalled = 0 [L75] customIrp = 0 [L326] RET _BLAST_init() [L328] COND TRUE status >= 0 [L329] s = NP [L330] customIrp = 0 [L331] setEventCalled = customIrp [L332] lowerDriverReturn = setEventCalled [L333] compRegistered = lowerDriverReturn [L334] pended = compRegistered [L335] pirp__IoStatus__Status = 0 [L336] myStatus = 0 [L337] COND FALSE !(irp_choice == 0) [L342] CALL stub_driver_init() [L47] s = NP [L48] pended = 0 [L49] compFptr = 0 [L50] compRegistered = 0 [L51] lowerDriverReturn = 0 [L52] setEventCalled = 0 [L53] customIrp = 0 [L342] RET stub_driver_init() [L345] COND FALSE !(status < 0) [L349] int tmp_ndt_1; [L350] tmp_ndt_1 = __VERIFIER_nondet_int() [L351] COND FALSE !(tmp_ndt_1 == 0) [L354] int tmp_ndt_2; [L355] tmp_ndt_2 = __VERIFIER_nondet_int() [L356] COND FALSE !(tmp_ndt_2 == 1) [L359] int tmp_ndt_3; [L360] tmp_ndt_3 = __VERIFIER_nondet_int() [L361] COND TRUE tmp_ndt_3 == 3 [L388] CALL, EXPR KbFilter_PnP(devobj, pirp) [L80] int devExt ; [L81] int irpStack ; [L82] int status ; [L83] int event = __VERIFIER_nondet_int() ; [L84] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L85] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L86] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L87] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L88] int devExt__Started ; [L89] int devExt__Removed ; [L90] int devExt__SurpriseRemoved ; [L91] int Irp__IoStatus__Status ; [L92] int Irp__IoStatus__Information ; [L93] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L94] int irpSp ; [L95] int nextIrpSp ; [L96] int nextIrpSp__Control ; [L97] int irpSp___0 ; [L98] int irpSp__Context ; [L99] int irpSp__Control ; [L100] long __cil_tmp23 ; [L103] status = 0 [L104] devExt = DeviceObject__DeviceExtension [L105] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L106] COND FALSE !(irpStack__MinorFunction == 0) [L109] COND FALSE !(irpStack__MinorFunction == 23) [L112] COND TRUE irpStack__MinorFunction == 2 [L236] devExt__Removed = 1 [L237] COND TRUE s == NP [L238] s = SKIP1 [L245] Irp__CurrentLocation ++ [L246] Irp__Tail__Overlay__CurrentStackLocation ++ [L247] CALL IofCallDriver(devExt__TopOfStack, Irp) [L483] int returnVal2 ; [L484] int compRetStatus ; [L485] int lcontext = __VERIFIER_nondet_int() ; [L486] long long __cil_tmp7 ; [L489] COND FALSE !(\read(compRegistered)) [L502] int tmp_ndt_6; [L503] tmp_ndt_6 = __VERIFIER_nondet_int() [L504] COND FALSE !(tmp_ndt_6 == 0) [L507] int tmp_ndt_7; [L508] tmp_ndt_7 = __VERIFIER_nondet_int() [L509] COND TRUE tmp_ndt_7 == 1 [L518] returnVal2 = -1073741823 [L528] COND FALSE !(s == NP) [L532] COND FALSE !(s == MPR1) [L541] COND TRUE s == SKIP1 [L542] s = SKIP2 [L543] lowerDriverReturn = returnVal2 [L551] return (returnVal2); [L247] RET IofCallDriver(devExt__TopOfStack, Irp) [L248] status = 0 [L290] return (status); [L388] RET, EXPR KbFilter_PnP(devobj, pirp) [L388] status = KbFilter_PnP(devobj, pirp) [L412] COND FALSE !(pended == 1) [L420] COND FALSE !(pended == 1) [L428] COND TRUE s != UNLOADED [L429] COND TRUE status != -1 [L430] COND FALSE !(s != SKIP2) [L440] COND FALSE !(pended == 1) [L447] COND FALSE !(s == DC) [L452] COND TRUE status != lowerDriverReturn [L453] CALL errorFn() [L1013] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 19 procedures, 679 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 55.8s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 45.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10377 SDtfs, 17672 SDslu, 18557 SDs, 0 SdLazy, 33765 SolverSat, 1258 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 593 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...