/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-b7b32d2 [2021-02-22 01:51:53,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:51:53,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:51:53,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:51:53,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:51:53,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:51:53,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:51:53,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:51:53,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:51:53,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:51:53,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:51:53,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:51:53,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:51:53,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:51:53,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:51:53,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:51:53,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:51:53,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:51:53,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:51:53,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:51:53,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:51:53,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:51:53,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:51:53,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:51:53,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:51:53,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:51:53,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:51:53,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:51:53,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:51:53,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:51:53,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:51:53,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:51:53,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:51:53,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:51:53,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:51:53,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:51:53,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:51:53,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:51:53,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:51:53,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:51:53,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:51:53,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:51:53,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:51:53,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:51:53,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:51:53,779 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:51:53,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:51:53,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:51:53,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:51:53,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:51:53,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:51:53,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:51:53,781 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:51:53,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:51:53,782 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:51:53,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:51:53,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:51:53,782 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:51:53,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:51:53,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:51:53,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:51:53,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:51:53,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:51:53,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:51:53,784 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:51:53,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:51:54,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:51:54,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:51:54,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:51:54,257 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:51:54,258 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:51:54,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2021-02-22 01:51:54,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd4ed3aa/37aa33a4bbca4a9a8fdf3dd433404e76/FLAG6a6a84511 [2021-02-22 01:51:55,109 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:51:55,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2021-02-22 01:51:55,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd4ed3aa/37aa33a4bbca4a9a8fdf3dd433404e76/FLAG6a6a84511 [2021-02-22 01:51:55,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd4ed3aa/37aa33a4bbca4a9a8fdf3dd433404e76 [2021-02-22 01:51:55,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:51:55,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:51:55,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:51:55,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:51:55,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:51:55,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:51:55" (1/1) ... [2021-02-22 01:51:55,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529a69c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55, skipping insertion in model container [2021-02-22 01:51:55,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:51:55" (1/1) ... [2021-02-22 01:51:55,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:51:55,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:51:55,783 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] [2021-02-22 01:51:55,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:51:55,800 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:51:55,879 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] [2021-02-22 01:51:55,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:51:55,919 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:51:55,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55 WrapperNode [2021-02-22 01:51:55,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:51:55,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:51:55,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:51:55,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:51:55,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55" (1/1) ... [2021-02-22 01:51:55,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55" (1/1) ... [2021-02-22 01:51:55,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55" (1/1) ... [2021-02-22 01:51:55,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55" (1/1) ... [2021-02-22 01:51:55,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55" (1/1) ... [2021-02-22 01:51:55,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55" (1/1) ... [2021-02-22 01:51:55,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55" (1/1) ... [2021-02-22 01:51:55,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:51:56,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:51:56,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:51:56,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:51:56,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55" (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 [2021-02-22 01:51:56,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:51:56,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:51:56,194 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:51:56,194 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-02-22 01:51:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-02-22 01:51:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2021-02-22 01:51:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:51:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-02-22 01:51:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-02-22 01:51:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-02-22 01:51:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-02-22 01:51:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-02-22 01:51:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2021-02-22 01:51:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2021-02-22 01:51:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2021-02-22 01:51:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2021-02-22 01:51:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2021-02-22 01:51:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2021-02-22 01:51:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-02-22 01:51:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:51:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:51:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:51:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:51:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-22 01:51:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:51:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-02-22 01:51:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2021-02-22 01:51:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-02-22 01:51:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-02-22 01:51:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-02-22 01:51:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2021-02-22 01:51:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2021-02-22 01:51:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2021-02-22 01:51:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2021-02-22 01:51:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2021-02-22 01:51:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2021-02-22 01:51:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-02-22 01:51:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-02-22 01:51:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-02-22 01:51:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-02-22 01:51:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:51:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-02-22 01:51:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:51:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:51:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:51:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:51:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:51:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:51:56,533 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-22 01:51:56,740 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-02-22 01:51:56,740 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-02-22 01:51:56,747 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-22 01:51:56,794 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-02-22 01:51:56,794 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-02-22 01:51:56,951 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-22 01:51:56,972 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-02-22 01:51:56,972 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-02-22 01:51:56,981 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-22 01:51:57,123 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2021-02-22 01:51:57,123 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2021-02-22 01:51:57,130 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-22 01:51:57,175 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-02-22 01:51:57,175 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-02-22 01:51:57,187 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-22 01:51:57,239 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-02-22 01:51:57,239 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-02-22 01:51:57,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:51:57,338 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:51:57,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:51:57 BoogieIcfgContainer [2021-02-22 01:51:57,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:51:57,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:51:57,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:51:57,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:51:57,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:51:55" (1/3) ... [2021-02-22 01:51:57,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3501dc3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:51:57, skipping insertion in model container [2021-02-22 01:51:57,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:51:55" (2/3) ... [2021-02-22 01:51:57,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3501dc3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:51:57, skipping insertion in model container [2021-02-22 01:51:57,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:51:57" (3/3) ... [2021-02-22 01:51:57,356 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2021-02-22 01:51:57,365 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:51:57,371 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:51:57,394 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:51:57,426 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:51:57,426 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:51:57,426 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:51:57,426 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:51:57,427 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:51:57,427 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:51:57,427 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:51:57,427 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:51:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states. [2021-02-22 01:51:57,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-02-22 01:51:57,477 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:51:57,478 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] [2021-02-22 01:51:57,479 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:51:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:51:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash 527172370, now seen corresponding path program 1 times [2021-02-22 01:51:57,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:51:57,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916517103] [2021-02-22 01:51:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:51:57,587 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:51:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:57,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:57,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:57,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:57,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:51:57,893 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-22 01:51:57,894 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-22 01:51:57,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:57,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:58,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:51:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:58,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:58,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:58,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:51:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:51:58,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:51:58,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:51:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:51:58,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916517103] [2021-02-22 01:51:58,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:51:58,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 01:51:58,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180247012] [2021-02-22 01:51:58,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 01:51:58,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:51:58,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 01:51:58,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:51:58,211 INFO L87 Difference]: Start difference. First operand 676 states. Second operand 5 states. [2021-02-22 01:52:00,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:00,468 INFO L93 Difference]: Finished difference Result 1045 states and 1256 transitions. [2021-02-22 01:52:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:52:00,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2021-02-22 01:52:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:00,510 INFO L225 Difference]: With dead ends: 1045 [2021-02-22 01:52:00,510 INFO L226 Difference]: Without dead ends: 717 [2021-02-22 01:52:00,523 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 [2021-02-22 01:52:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-02-22 01:52:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 663. [2021-02-22 01:52:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2021-02-22 01:52:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 758 transitions. [2021-02-22 01:52:00,748 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 758 transitions. Word has length 93 [2021-02-22 01:52:00,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:00,748 INFO L480 AbstractCegarLoop]: Abstraction has 663 states and 758 transitions. [2021-02-22 01:52:00,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 01:52:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 758 transitions. [2021-02-22 01:52:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-02-22 01:52:00,754 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:00,755 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] [2021-02-22 01:52:00,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:52:00,755 INFO L428 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:00,756 INFO L82 PathProgramCache]: Analyzing trace with hash -656286405, now seen corresponding path program 1 times [2021-02-22 01:52:00,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:00,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822679159] [2021-02-22 01:52:00,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:00,761 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:00,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:00,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:00,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:00,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:00,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:00,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:00,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:00,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:00,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:00,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:00,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:01,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:01,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:01,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:01,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:01,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:01,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:01,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:01,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822679159] [2021-02-22 01:52:01,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:01,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:52:01,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062843232] [2021-02-22 01:52:01,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:52:01,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:01,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:52:01,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:52:01,112 INFO L87 Difference]: Start difference. First operand 663 states and 758 transitions. Second operand 6 states. [2021-02-22 01:52:03,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:03,693 INFO L93 Difference]: Finished difference Result 984 states and 1139 transitions. [2021-02-22 01:52:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:52:03,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2021-02-22 01:52:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:03,703 INFO L225 Difference]: With dead ends: 984 [2021-02-22 01:52:03,704 INFO L226 Difference]: Without dead ends: 893 [2021-02-22 01:52:03,706 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 [2021-02-22 01:52:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-02-22 01:52:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 814. [2021-02-22 01:52:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2021-02-22 01:52:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 925 transitions. [2021-02-22 01:52:03,850 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 925 transitions. Word has length 144 [2021-02-22 01:52:03,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:03,851 INFO L480 AbstractCegarLoop]: Abstraction has 814 states and 925 transitions. [2021-02-22 01:52:03,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:52:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 925 transitions. [2021-02-22 01:52:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-22 01:52:03,856 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:03,857 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] [2021-02-22 01:52:03,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:52:03,857 INFO L428 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1344061166, now seen corresponding path program 1 times [2021-02-22 01:52:03,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:03,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264544652] [2021-02-22 01:52:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:03,862 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:03,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:03,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:03,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:03,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:03,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:03,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:03,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:03,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:04,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:04,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:04,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:04,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:04,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:04,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:04,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:04,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:04,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:04,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:04,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:04,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264544652] [2021-02-22 01:52:04,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:04,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:52:04,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330218365] [2021-02-22 01:52:04,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:52:04,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:04,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:52:04,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:52:04,202 INFO L87 Difference]: Start difference. First operand 814 states and 925 transitions. Second operand 6 states. [2021-02-22 01:52:06,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:06,120 INFO L93 Difference]: Finished difference Result 1141 states and 1301 transitions. [2021-02-22 01:52:06,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:52:06,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2021-02-22 01:52:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:06,127 INFO L225 Difference]: With dead ends: 1141 [2021-02-22 01:52:06,127 INFO L226 Difference]: Without dead ends: 915 [2021-02-22 01:52:06,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:52:06,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-02-22 01:52:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 889. [2021-02-22 01:52:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2021-02-22 01:52:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1011 transitions. [2021-02-22 01:52:06,298 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1011 transitions. Word has length 166 [2021-02-22 01:52:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:06,299 INFO L480 AbstractCegarLoop]: Abstraction has 889 states and 1011 transitions. [2021-02-22 01:52:06,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:52:06,299 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1011 transitions. [2021-02-22 01:52:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-22 01:52:06,302 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:06,303 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] [2021-02-22 01:52:06,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:52:06,303 INFO L428 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:06,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:06,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1334790231, now seen corresponding path program 1 times [2021-02-22 01:52:06,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:06,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747137521] [2021-02-22 01:52:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:06,311 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:06,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:06,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:06,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:06,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:06,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:06,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:06,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:06,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:06,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:06,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:06,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:06,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:06,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:06,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:06,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:06,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:06,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747137521] [2021-02-22 01:52:06,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:06,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:52:06,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381468504] [2021-02-22 01:52:06,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:52:06,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:06,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:52:06,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:52:06,622 INFO L87 Difference]: Start difference. First operand 889 states and 1011 transitions. Second operand 6 states. [2021-02-22 01:52:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:08,802 INFO L93 Difference]: Finished difference Result 893 states and 1014 transitions. [2021-02-22 01:52:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 01:52:08,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-22 01:52:08,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:08,810 INFO L225 Difference]: With dead ends: 893 [2021-02-22 01:52:08,810 INFO L226 Difference]: Without dead ends: 889 [2021-02-22 01:52:08,811 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 [2021-02-22 01:52:08,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-02-22 01:52:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 888. [2021-02-22 01:52:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2021-02-22 01:52:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1008 transitions. [2021-02-22 01:52:08,961 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1008 transitions. Word has length 170 [2021-02-22 01:52:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:08,962 INFO L480 AbstractCegarLoop]: Abstraction has 888 states and 1008 transitions. [2021-02-22 01:52:08,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:52:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1008 transitions. [2021-02-22 01:52:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-22 01:52:08,966 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:08,966 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] [2021-02-22 01:52:08,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:52:08,967 INFO L428 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:08,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1401291032, now seen corresponding path program 1 times [2021-02-22 01:52:08,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:08,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748461090] [2021-02-22 01:52:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:08,980 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:09,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:09,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:52:09,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:09,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:09,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:09,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:09,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:09,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:52:09,263 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-22 01:52:09,264 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-22 01:52:09,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:09,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:09,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-02-22 01:52:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:09,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:09,382 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-22 01:52:09,384 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-22 01:52:09,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:52:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:09,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:09,453 WARN L141 QuantifierPusher]: treesize reduction 23, result has 48.9 percent of original size [2021-02-22 01:52:09,455 WARN L147 QuantifierPusher]: treesize reduction 23, result has 48.9 percent of original size 22 [2021-02-22 01:52:09,499 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-22 01:52:09,500 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-22 01:52:09,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-22 01:52:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:09,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:09,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:09,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:09,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748461090] [2021-02-22 01:52:09,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:09,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 01:52:09,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320611303] [2021-02-22 01:52:09,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 01:52:09,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:09,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 01:52:09,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:52:09,682 INFO L87 Difference]: Start difference. First operand 888 states and 1008 transitions. Second operand 14 states. [2021-02-22 01:52:11,151 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2021-02-22 01:52:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:13,159 INFO L93 Difference]: Finished difference Result 1021 states and 1155 transitions. [2021-02-22 01:52:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-22 01:52:13,160 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 200 [2021-02-22 01:52:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:13,167 INFO L225 Difference]: With dead ends: 1021 [2021-02-22 01:52:13,167 INFO L226 Difference]: Without dead ends: 943 [2021-02-22 01:52:13,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2021-02-22 01:52:13,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-02-22 01:52:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 893. [2021-02-22 01:52:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2021-02-22 01:52:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1009 transitions. [2021-02-22 01:52:13,340 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1009 transitions. Word has length 200 [2021-02-22 01:52:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:13,341 INFO L480 AbstractCegarLoop]: Abstraction has 893 states and 1009 transitions. [2021-02-22 01:52:13,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 01:52:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1009 transitions. [2021-02-22 01:52:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-02-22 01:52:13,345 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:13,345 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] [2021-02-22 01:52:13,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:52:13,346 INFO L428 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:13,346 INFO L82 PathProgramCache]: Analyzing trace with hash 225944593, now seen corresponding path program 1 times [2021-02-22 01:52:13,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:13,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934173196] [2021-02-22 01:52:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:13,351 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-02-22 01:52:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:52:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-22 01:52:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:13,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:13,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:13,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:13,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934173196] [2021-02-22 01:52:13,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:13,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:52:13,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355706020] [2021-02-22 01:52:13,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:52:13,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:13,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:52:13,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:52:13,725 INFO L87 Difference]: Start difference. First operand 893 states and 1009 transitions. Second operand 8 states. [2021-02-22 01:52:14,894 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-02-22 01:52:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:16,263 INFO L93 Difference]: Finished difference Result 1079 states and 1230 transitions. [2021-02-22 01:52:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:52:16,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2021-02-22 01:52:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:16,271 INFO L225 Difference]: With dead ends: 1079 [2021-02-22 01:52:16,271 INFO L226 Difference]: Without dead ends: 940 [2021-02-22 01:52:16,274 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 [2021-02-22 01:52:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-02-22 01:52:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 899. [2021-02-22 01:52:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2021-02-22 01:52:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1018 transitions. [2021-02-22 01:52:16,447 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1018 transitions. Word has length 202 [2021-02-22 01:52:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:16,448 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1018 transitions. [2021-02-22 01:52:16,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:52:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1018 transitions. [2021-02-22 01:52:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-02-22 01:52:16,453 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:16,454 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] [2021-02-22 01:52:16,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:52:16,454 INFO L428 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:16,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:16,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2079003683, now seen corresponding path program 1 times [2021-02-22 01:52:16,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:16,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913983253] [2021-02-22 01:52:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:16,459 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:16,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,543 WARN L141 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-02-22 01:52:16,544 WARN L147 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size 8 [2021-02-22 01:52:16,551 WARN L141 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-02-22 01:52:16,552 WARN L147 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size 8 [2021-02-22 01:52:16,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:16,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:16,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:52:16,707 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-22 01:52:16,707 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-22 01:52:16,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:16,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-22 01:52:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:16,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:52:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:52:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:16,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:16,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-22 01:52:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:16,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:16,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:16,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:16,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913983253] [2021-02-22 01:52:16,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:16,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-22 01:52:16,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367218925] [2021-02-22 01:52:16,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-22 01:52:16,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:16,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-22 01:52:16,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-02-22 01:52:16,915 INFO L87 Difference]: Start difference. First operand 899 states and 1018 transitions. Second operand 13 states. [2021-02-22 01:52:17,542 WARN L202 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2021-02-22 01:52:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:20,064 INFO L93 Difference]: Finished difference Result 941 states and 1065 transitions. [2021-02-22 01:52:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-22 01:52:20,065 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 197 [2021-02-22 01:52:20,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:20,072 INFO L225 Difference]: With dead ends: 941 [2021-02-22 01:52:20,072 INFO L226 Difference]: Without dead ends: 933 [2021-02-22 01:52:20,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2021-02-22 01:52:20,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-02-22 01:52:20,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 904. [2021-02-22 01:52:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2021-02-22 01:52:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1024 transitions. [2021-02-22 01:52:20,259 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1024 transitions. Word has length 197 [2021-02-22 01:52:20,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:20,260 INFO L480 AbstractCegarLoop]: Abstraction has 904 states and 1024 transitions. [2021-02-22 01:52:20,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-22 01:52:20,260 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1024 transitions. [2021-02-22 01:52:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-02-22 01:52:20,264 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:20,264 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] [2021-02-22 01:52:20,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 01:52:20,265 INFO L428 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:20,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:20,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1433078497, now seen corresponding path program 1 times [2021-02-22 01:52:20,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:20,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347592836] [2021-02-22 01:52:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:20,269 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:20,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:52:20,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:20,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:20,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:20,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-22 01:52:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:20,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:52:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:20,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-22 01:52:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:20,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:20,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:20,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347592836] [2021-02-22 01:52:20,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:20,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:52:20,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058655652] [2021-02-22 01:52:20,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:52:20,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:20,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:52:20,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:52:20,565 INFO L87 Difference]: Start difference. First operand 904 states and 1024 transitions. Second operand 8 states. [2021-02-22 01:52:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:21,782 INFO L93 Difference]: Finished difference Result 928 states and 1052 transitions. [2021-02-22 01:52:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:52:21,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2021-02-22 01:52:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:21,788 INFO L225 Difference]: With dead ends: 928 [2021-02-22 01:52:21,788 INFO L226 Difference]: Without dead ends: 908 [2021-02-22 01:52:21,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:52:21,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-02-22 01:52:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 899. [2021-02-22 01:52:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2021-02-22 01:52:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1015 transitions. [2021-02-22 01:52:21,997 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1015 transitions. Word has length 197 [2021-02-22 01:52:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:21,998 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1015 transitions. [2021-02-22 01:52:21,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:52:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1015 transitions. [2021-02-22 01:52:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-22 01:52:22,003 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:22,003 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] [2021-02-22 01:52:22,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 01:52:22,003 INFO L428 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:22,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:22,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1483697005, now seen corresponding path program 1 times [2021-02-22 01:52:22,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:22,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134687515] [2021-02-22 01:52:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:22,008 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:22,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:22,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:22,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:22,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-22 01:52:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:22,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:52:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:22,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-22 01:52:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:22,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:22,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:22,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:22,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134687515] [2021-02-22 01:52:22,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:22,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-22 01:52:22,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950718797] [2021-02-22 01:52:22,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-22 01:52:22,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:22,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-22 01:52:22,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:52:22,457 INFO L87 Difference]: Start difference. First operand 899 states and 1015 transitions. Second operand 17 states. [2021-02-22 01:52:26,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:26,763 INFO L93 Difference]: Finished difference Result 926 states and 1044 transitions. [2021-02-22 01:52:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-22 01:52:26,764 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 198 [2021-02-22 01:52:26,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:26,770 INFO L225 Difference]: With dead ends: 926 [2021-02-22 01:52:26,770 INFO L226 Difference]: Without dead ends: 901 [2021-02-22 01:52:26,771 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 [2021-02-22 01:52:26,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2021-02-22 01:52:26,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 892. [2021-02-22 01:52:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2021-02-22 01:52:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1005 transitions. [2021-02-22 01:52:26,956 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1005 transitions. Word has length 198 [2021-02-22 01:52:26,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:26,956 INFO L480 AbstractCegarLoop]: Abstraction has 892 states and 1005 transitions. [2021-02-22 01:52:26,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-22 01:52:26,956 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1005 transitions. [2021-02-22 01:52:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-02-22 01:52:26,960 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:26,960 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] [2021-02-22 01:52:26,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 01:52:26,961 INFO L428 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:26,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:26,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1648271953, now seen corresponding path program 1 times [2021-02-22 01:52:26,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:26,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826689316] [2021-02-22 01:52:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:26,964 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:27,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:27,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:27,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:27,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:27,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:27,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:27,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:27,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:27,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:27,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-02-22 01:52:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:27,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:27,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:27,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:27,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 01:52:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:27,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:27,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:27,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:27,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:27,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826689316] [2021-02-22 01:52:27,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:27,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-22 01:52:27,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501275493] [2021-02-22 01:52:27,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-22 01:52:27,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:27,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-22 01:52:27,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-22 01:52:27,304 INFO L87 Difference]: Start difference. First operand 892 states and 1005 transitions. Second operand 13 states. [2021-02-22 01:52:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:30,704 INFO L93 Difference]: Finished difference Result 919 states and 1034 transitions. [2021-02-22 01:52:30,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 01:52:30,704 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 201 [2021-02-22 01:52:30,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:30,709 INFO L225 Difference]: With dead ends: 919 [2021-02-22 01:52:30,709 INFO L226 Difference]: Without dead ends: 805 [2021-02-22 01:52:30,710 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 [2021-02-22 01:52:30,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-02-22 01:52:30,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 796. [2021-02-22 01:52:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2021-02-22 01:52:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 899 transitions. [2021-02-22 01:52:30,862 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 899 transitions. Word has length 201 [2021-02-22 01:52:30,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:30,863 INFO L480 AbstractCegarLoop]: Abstraction has 796 states and 899 transitions. [2021-02-22 01:52:30,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-22 01:52:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 899 transitions. [2021-02-22 01:52:30,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-02-22 01:52:30,867 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:30,867 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] [2021-02-22 01:52:30,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 01:52:30,868 INFO L428 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:30,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:30,868 INFO L82 PathProgramCache]: Analyzing trace with hash -151446723, now seen corresponding path program 1 times [2021-02-22 01:52:30,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:30,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020356328] [2021-02-22 01:52:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:30,871 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:30,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:30,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:30,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:30,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:30,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:30,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:30,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:30,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:31,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:31,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:31,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:31,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:31,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:31,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:31,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-02-22 01:52:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:31,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:31,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:31,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:31,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:31,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:52:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:31,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:31,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:31,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:31,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:31,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-22 01:52:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:31,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:31,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:31,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:31,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:31,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020356328] [2021-02-22 01:52:31,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:31,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-22 01:52:31,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52971339] [2021-02-22 01:52:31,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-22 01:52:31,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:31,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-22 01:52:31,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:52:31,331 INFO L87 Difference]: Start difference. First operand 796 states and 899 transitions. Second operand 17 states. [2021-02-22 01:52:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:34,936 INFO L93 Difference]: Finished difference Result 823 states and 928 transitions. [2021-02-22 01:52:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-22 01:52:34,937 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 203 [2021-02-22 01:52:34,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:34,942 INFO L225 Difference]: With dead ends: 823 [2021-02-22 01:52:34,942 INFO L226 Difference]: Without dead ends: 766 [2021-02-22 01:52:34,943 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 [2021-02-22 01:52:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-02-22 01:52:35,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 757. [2021-02-22 01:52:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2021-02-22 01:52:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 854 transitions. [2021-02-22 01:52:35,076 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 854 transitions. Word has length 203 [2021-02-22 01:52:35,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:35,077 INFO L480 AbstractCegarLoop]: Abstraction has 757 states and 854 transitions. [2021-02-22 01:52:35,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-22 01:52:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 854 transitions. [2021-02-22 01:52:35,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-22 01:52:35,081 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:35,081 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] [2021-02-22 01:52:35,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-22 01:52:35,082 INFO L428 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:35,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:35,082 INFO L82 PathProgramCache]: Analyzing trace with hash -2062563398, now seen corresponding path program 1 times [2021-02-22 01:52:35,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:35,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747712001] [2021-02-22 01:52:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:35,085 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:35,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:35,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:35,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:35,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:35,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:35,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:35,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:35,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:35,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:35,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:35,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:35,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:35,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:35,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-22 01:52:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:35,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:35,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:35,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:35,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:35,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747712001] [2021-02-22 01:52:35,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:35,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:52:35,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842154772] [2021-02-22 01:52:35,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:52:35,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:35,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:52:35,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:52:35,394 INFO L87 Difference]: Start difference. First operand 757 states and 854 transitions. Second operand 8 states. [2021-02-22 01:52:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:37,843 INFO L93 Difference]: Finished difference Result 812 states and 911 transitions. [2021-02-22 01:52:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:52:37,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2021-02-22 01:52:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:37,848 INFO L225 Difference]: With dead ends: 812 [2021-02-22 01:52:37,848 INFO L226 Difference]: Without dead ends: 704 [2021-02-22 01:52:37,849 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 [2021-02-22 01:52:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-02-22 01:52:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 676. [2021-02-22 01:52:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2021-02-22 01:52:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 756 transitions. [2021-02-22 01:52:37,969 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 756 transitions. Word has length 205 [2021-02-22 01:52:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:37,970 INFO L480 AbstractCegarLoop]: Abstraction has 676 states and 756 transitions. [2021-02-22 01:52:37,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:52:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 756 transitions. [2021-02-22 01:52:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-02-22 01:52:37,972 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:37,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:52:37,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-22 01:52:37,973 INFO L428 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:37,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:37,974 INFO L82 PathProgramCache]: Analyzing trace with hash 299365844, now seen corresponding path program 1 times [2021-02-22 01:52:37,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:37,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650669067] [2021-02-22 01:52:37,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:37,977 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:38,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:38,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:38,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:38,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:38,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:38,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:38,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:38,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:38,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-02-22 01:52:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:38,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:38,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:38,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:38,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:38,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-22 01:52:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:38,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:38,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:38,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:38,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:38,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650669067] [2021-02-22 01:52:38,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:38,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 01:52:38,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909663010] [2021-02-22 01:52:38,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 01:52:38,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:38,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 01:52:38,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:52:38,402 INFO L87 Difference]: Start difference. First operand 676 states and 756 transitions. Second operand 14 states. [2021-02-22 01:52:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:41,341 INFO L93 Difference]: Finished difference Result 715 states and 797 transitions. [2021-02-22 01:52:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-22 01:52:41,341 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 212 [2021-02-22 01:52:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:41,345 INFO L225 Difference]: With dead ends: 715 [2021-02-22 01:52:41,345 INFO L226 Difference]: Without dead ends: 669 [2021-02-22 01:52:41,346 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 [2021-02-22 01:52:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-02-22 01:52:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 660. [2021-02-22 01:52:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2021-02-22 01:52:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 737 transitions. [2021-02-22 01:52:41,481 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 737 transitions. Word has length 212 [2021-02-22 01:52:41,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:41,482 INFO L480 AbstractCegarLoop]: Abstraction has 660 states and 737 transitions. [2021-02-22 01:52:41,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 01:52:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 737 transitions. [2021-02-22 01:52:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-02-22 01:52:41,485 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:41,485 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] [2021-02-22 01:52:41,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-22 01:52:41,485 INFO L428 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:41,486 INFO L82 PathProgramCache]: Analyzing trace with hash -133726549, now seen corresponding path program 1 times [2021-02-22 01:52:41,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:41,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407157054] [2021-02-22 01:52:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:41,490 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:41,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:41,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:41,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:41,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:41,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:41,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:41,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:41,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:41,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:41,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-02-22 01:52:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:41,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:41,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:41,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:41,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:41,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-22 01:52:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:41,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:41,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:41,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:52:41,848 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-22 01:52:41,849 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-22 01:52:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:41,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407157054] [2021-02-22 01:52:41,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:41,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-22 01:52:41,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878341801] [2021-02-22 01:52:41,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-22 01:52:41,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:41,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-22 01:52:41,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-02-22 01:52:41,948 INFO L87 Difference]: Start difference. First operand 660 states and 737 transitions. Second operand 13 states. [2021-02-22 01:52:43,596 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-22 01:52:44,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:44,856 INFO L93 Difference]: Finished difference Result 910 states and 1018 transitions. [2021-02-22 01:52:44,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-22 01:52:44,857 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 213 [2021-02-22 01:52:44,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:44,862 INFO L225 Difference]: With dead ends: 910 [2021-02-22 01:52:44,863 INFO L226 Difference]: Without dead ends: 874 [2021-02-22 01:52:44,864 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 [2021-02-22 01:52:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-02-22 01:52:45,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 674. [2021-02-22 01:52:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2021-02-22 01:52:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 754 transitions. [2021-02-22 01:52:45,008 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 754 transitions. Word has length 213 [2021-02-22 01:52:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:45,008 INFO L480 AbstractCegarLoop]: Abstraction has 674 states and 754 transitions. [2021-02-22 01:52:45,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-22 01:52:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 754 transitions. [2021-02-22 01:52:45,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-02-22 01:52:45,011 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:45,011 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] [2021-02-22 01:52:45,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-22 01:52:45,012 INFO L428 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:45,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:45,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1609640836, now seen corresponding path program 1 times [2021-02-22 01:52:45,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:45,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737316606] [2021-02-22 01:52:45,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:45,016 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:45,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:45,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:45,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:45,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:45,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:45,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:45,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:45,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:45,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:45,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-02-22 01:52:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:45,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:45,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:45,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:45,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:45,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-22 01:52:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:45,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:45,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:45,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:45,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:45,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737316606] [2021-02-22 01:52:45,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:45,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 01:52:45,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395618179] [2021-02-22 01:52:45,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 01:52:45,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:45,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 01:52:45,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:52:45,412 INFO L87 Difference]: Start difference. First operand 674 states and 754 transitions. Second operand 14 states. [2021-02-22 01:52:48,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:48,595 INFO L93 Difference]: Finished difference Result 713 states and 795 transitions. [2021-02-22 01:52:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-22 01:52:48,596 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 213 [2021-02-22 01:52:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:48,599 INFO L225 Difference]: With dead ends: 713 [2021-02-22 01:52:48,599 INFO L226 Difference]: Without dead ends: 650 [2021-02-22 01:52:48,600 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 [2021-02-22 01:52:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-02-22 01:52:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 641. [2021-02-22 01:52:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2021-02-22 01:52:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 698 transitions. [2021-02-22 01:52:48,724 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 698 transitions. Word has length 213 [2021-02-22 01:52:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:48,725 INFO L480 AbstractCegarLoop]: Abstraction has 641 states and 698 transitions. [2021-02-22 01:52:48,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 01:52:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 698 transitions. [2021-02-22 01:52:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-02-22 01:52:48,727 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:48,728 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] [2021-02-22 01:52:48,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-22 01:52:48,728 INFO L428 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:48,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:48,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1055802081, now seen corresponding path program 1 times [2021-02-22 01:52:48,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:48,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109452912] [2021-02-22 01:52:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:48,731 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:48,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:48,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:48,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:48,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:52:48,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:48,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:52:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:48,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:48,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-22 01:52:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:48,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:48,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-22 01:52:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:48,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:48,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-22 01:52:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:48,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:48,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-02-22 01:52:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:48,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:48,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-02-22 01:52:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:52:48,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:48,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:52:48,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:52:48,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:52:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:52:49,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109452912] [2021-02-22 01:52:49,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:52:49,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:52:49,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146205894] [2021-02-22 01:52:49,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:52:49,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:52:49,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:52:49,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:52:49,005 INFO L87 Difference]: Start difference. First operand 641 states and 698 transitions. Second operand 8 states. [2021-02-22 01:52:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:52:50,230 INFO L93 Difference]: Finished difference Result 764 states and 838 transitions. [2021-02-22 01:52:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:52:50,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2021-02-22 01:52:50,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:52:50,234 INFO L225 Difference]: With dead ends: 764 [2021-02-22 01:52:50,234 INFO L226 Difference]: Without dead ends: 668 [2021-02-22 01:52:50,235 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 [2021-02-22 01:52:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-02-22 01:52:50,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 637. [2021-02-22 01:52:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2021-02-22 01:52:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 691 transitions. [2021-02-22 01:52:50,374 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 691 transitions. Word has length 221 [2021-02-22 01:52:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:52:50,375 INFO L480 AbstractCegarLoop]: Abstraction has 637 states and 691 transitions. [2021-02-22 01:52:50,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:52:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 691 transitions. [2021-02-22 01:52:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-02-22 01:52:50,379 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:52:50,379 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] [2021-02-22 01:52:50,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-22 01:52:50,379 INFO L428 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:52:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:52:50,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1803568816, now seen corresponding path program 1 times [2021-02-22 01:52:50,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:52:50,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774452740] [2021-02-22 01:52:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:52:50,385 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:52:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:52:50,417 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:52:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:52:50,449 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:52:50,630 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:52:50,631 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:52:50,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-22 01:52:50,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:52:50 BoogieIcfgContainer [2021-02-22 01:52:50,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:52:50,689 INFO L168 Benchmark]: Toolchain (without parser) took 55280.77 ms. Allocated memory was 151.0 MB in the beginning and 549.5 MB in the end (delta: 398.5 MB). Free memory was 126.5 MB in the beginning and 328.8 MB in the end (delta: -202.3 MB). Peak memory consumption was 196.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:52:50,690 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:52:50,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.76 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 106.6 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:52:50,690 INFO L168 Benchmark]: Boogie Preprocessor took 77.97 ms. Allocated memory is still 151.0 MB. Free memory was 106.6 MB in the beginning and 103.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:52:50,690 INFO L168 Benchmark]: RCFGBuilder took 1343.15 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 95.4 MB in the end (delta: 8.3 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:52:50,690 INFO L168 Benchmark]: TraceAbstraction took 53338.14 ms. Allocated memory was 151.0 MB in the beginning and 549.5 MB in the end (delta: 398.5 MB). Free memory was 94.9 MB in the beginning and 328.8 MB in the end (delta: -233.9 MB). Peak memory consumption was 164.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:52:50,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 502.76 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 106.6 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.97 ms. Allocated memory is still 151.0 MB. Free memory was 106.6 MB in the beginning and 103.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1343.15 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 95.4 MB in the end (delta: 8.3 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 53338.14 ms. Allocated memory was 151.0 MB in the beginning and 549.5 MB in the end (delta: 398.5 MB). Free memory was 94.9 MB in the beginning and 328.8 MB in the end (delta: -233.9 MB). Peak memory consumption was 164.5 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: 53.2s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 43.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10374 SDtfs, 17680 SDslu, 18542 SDs, 0 SdLazy, 33757 SolverSat, 1260 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 6.8s 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...