/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:31:43,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:31:43,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:31:43,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:31:43,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:31:43,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:31:43,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:31:43,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:31:43,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:31:43,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:31:43,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:31:43,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:31:43,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:31:43,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:31:43,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:31:43,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:31:43,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:31:43,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:31:43,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:31:43,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:31:43,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:31:43,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:31:43,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:31:43,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:31:43,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:31:43,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:31:43,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:31:43,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:31:43,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:31:43,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:31:43,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:31:43,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:31:43,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:31:43,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:31:43,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:31:43,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:31:43,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:31:43,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:31:43,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:31:43,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:31:43,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:31:43,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:31:43,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:31:43,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:31:43,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:31:43,767 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:31:43,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:31:43,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:31:43,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:31:43,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:31:43,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:31:43,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:31:43,769 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:31:43,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:31:43,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:31:43,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:31:43,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:31:43,770 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:31:43,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:31:43,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:31:43,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:31:43,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:31:43,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:31:43,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:31:43,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:31:44,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:31:44,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:31:44,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:31:44,230 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:31:44,232 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:31:44,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2021-02-21 20:31:44,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03354b8ce/465072da0fac445b9b86176003887d3a/FLAGb75f121fd [2021-02-21 20:31:45,032 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:31:45,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2021-02-21 20:31:45,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03354b8ce/465072da0fac445b9b86176003887d3a/FLAGb75f121fd [2021-02-21 20:31:45,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03354b8ce/465072da0fac445b9b86176003887d3a [2021-02-21 20:31:45,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:31:45,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:31:45,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:31:45,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:31:45,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:31:45,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:31:45" (1/1) ... [2021-02-21 20:31:45,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a113f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:45, skipping insertion in model container [2021-02-21 20:31:45,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:31:45" (1/1) ... [2021-02-21 20:31:45,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:31:45,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:31:45,811 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] [2021-02-21 20:31:45,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:31:45,828 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:31:45,971 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] [2021-02-21 20:31:45,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:31:46,008 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:31:46,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:46 WrapperNode [2021-02-21 20:31:46,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:31:46,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:31:46,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:31:46,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:31:46,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:46" (1/1) ... [2021-02-21 20:31:46,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:46" (1/1) ... [2021-02-21 20:31:46,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:46" (1/1) ... [2021-02-21 20:31:46,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:46" (1/1) ... [2021-02-21 20:31:46,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:46" (1/1) ... [2021-02-21 20:31:46,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:46" (1/1) ... [2021-02-21 20:31:46,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:46" (1/1) ... [2021-02-21 20:31:46,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:31:46,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:31:46,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:31:46,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:31:46,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:46" (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 [2021-02-21 20:31:46,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:31:46,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:31:46,283 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:31:46,283 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-02-21 20:31:46,283 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-02-21 20:31:46,284 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2021-02-21 20:31:46,284 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:31:46,284 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-02-21 20:31:46,284 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-02-21 20:31:46,284 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-02-21 20:31:46,285 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-02-21 20:31:46,285 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-02-21 20:31:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2021-02-21 20:31:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2021-02-21 20:31:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2021-02-21 20:31:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2021-02-21 20:31:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2021-02-21 20:31:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2021-02-21 20:31:46,288 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-02-21 20:31:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:31:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:31:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:31:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:31:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-21 20:31:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:31:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-02-21 20:31:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2021-02-21 20:31:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-02-21 20:31:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-02-21 20:31:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-02-21 20:31:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2021-02-21 20:31:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2021-02-21 20:31:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2021-02-21 20:31:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2021-02-21 20:31:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2021-02-21 20:31:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2021-02-21 20:31:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-02-21 20:31:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-02-21 20:31:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-02-21 20:31:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-02-21 20:31:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:31:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-02-21 20:31:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:31:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:31:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:31:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:31:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:31:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:31:46,747 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-21 20:31:47,136 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-02-21 20:31:47,137 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-02-21 20:31:47,153 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-21 20:31:47,286 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-02-21 20:31:47,286 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-02-21 20:31:47,552 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-21 20:31:47,587 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-02-21 20:31:47,588 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-02-21 20:31:47,594 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-21 20:31:47,697 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2021-02-21 20:31:47,697 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2021-02-21 20:31:47,703 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-21 20:31:47,736 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-02-21 20:31:47,736 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-02-21 20:31:47,744 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-21 20:31:47,786 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-02-21 20:31:47,786 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-02-21 20:31:47,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:31:47,851 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 20:31:47,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:31:47 BoogieIcfgContainer [2021-02-21 20:31:47,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:31:47,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:31:47,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:31:47,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:31:47,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:31:45" (1/3) ... [2021-02-21 20:31:47,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1ac707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:31:47, skipping insertion in model container [2021-02-21 20:31:47,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:31:46" (2/3) ... [2021-02-21 20:31:47,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1ac707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:31:47, skipping insertion in model container [2021-02-21 20:31:47,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:31:47" (3/3) ... [2021-02-21 20:31:47,864 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2021-02-21 20:31:47,871 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:31:47,877 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:31:47,898 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:31:47,924 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:31:47,924 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:31:47,924 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:31:47,924 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:31:47,925 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:31:47,925 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:31:47,925 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:31:47,925 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:31:47,960 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states. [2021-02-21 20:31:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-02-21 20:31:47,975 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:47,977 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] [2021-02-21 20:31:47,977 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:47,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:47,984 INFO L82 PathProgramCache]: Analyzing trace with hash 527172370, now seen corresponding path program 1 times [2021-02-21 20:31:47,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:47,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291361785] [2021-02-21 20:31:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:48,094 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:48,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:48,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:48,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:48,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:48,450 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-21 20:31:48,450 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-21 20:31:48,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:48,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:48,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:48,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:48,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:48,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:31:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:48,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:48,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:48,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291361785] [2021-02-21 20:31:48,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:48,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 20:31:48,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507648142] [2021-02-21 20:31:48,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 20:31:48,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 20:31:48,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:31:48,679 INFO L87 Difference]: Start difference. First operand 676 states. Second operand 5 states. [2021-02-21 20:31:51,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:51,258 INFO L93 Difference]: Finished difference Result 1045 states and 1256 transitions. [2021-02-21 20:31:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 20:31:51,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2021-02-21 20:31:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:51,281 INFO L225 Difference]: With dead ends: 1045 [2021-02-21 20:31:51,282 INFO L226 Difference]: Without dead ends: 717 [2021-02-21 20:31:51,291 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 [2021-02-21 20:31:51,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-02-21 20:31:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 663. [2021-02-21 20:31:51,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2021-02-21 20:31:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 758 transitions. [2021-02-21 20:31:51,534 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 758 transitions. Word has length 93 [2021-02-21 20:31:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:51,535 INFO L480 AbstractCegarLoop]: Abstraction has 663 states and 758 transitions. [2021-02-21 20:31:51,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 20:31:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 758 transitions. [2021-02-21 20:31:51,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-02-21 20:31:51,541 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:51,541 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] [2021-02-21 20:31:51,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:31:51,542 INFO L428 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:51,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:51,543 INFO L82 PathProgramCache]: Analyzing trace with hash -656286405, now seen corresponding path program 1 times [2021-02-21 20:31:51,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:51,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817660332] [2021-02-21 20:31:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:51,548 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:51,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:51,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:51,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:51,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:51,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:51,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:51,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:51,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:51,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:51,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:51,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:51,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:51,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:31:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:51,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:51,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:51,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:31:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:51,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:51,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:51,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817660332] [2021-02-21 20:31:51,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:51,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:31:51,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289716312] [2021-02-21 20:31:51,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:31:51,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:51,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:31:51,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:31:51,942 INFO L87 Difference]: Start difference. First operand 663 states and 758 transitions. Second operand 6 states. [2021-02-21 20:31:54,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:54,339 INFO L93 Difference]: Finished difference Result 984 states and 1139 transitions. [2021-02-21 20:31:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 20:31:54,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2021-02-21 20:31:54,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:54,348 INFO L225 Difference]: With dead ends: 984 [2021-02-21 20:31:54,349 INFO L226 Difference]: Without dead ends: 893 [2021-02-21 20:31:54,351 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 [2021-02-21 20:31:54,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-02-21 20:31:54,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 814. [2021-02-21 20:31:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2021-02-21 20:31:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 925 transitions. [2021-02-21 20:31:54,484 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 925 transitions. Word has length 144 [2021-02-21 20:31:54,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:54,485 INFO L480 AbstractCegarLoop]: Abstraction has 814 states and 925 transitions. [2021-02-21 20:31:54,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:31:54,485 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 925 transitions. [2021-02-21 20:31:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 20:31:54,489 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:54,490 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] [2021-02-21 20:31:54,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:31:54,490 INFO L428 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:54,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:54,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1344061166, now seen corresponding path program 1 times [2021-02-21 20:31:54,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:54,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534718016] [2021-02-21 20:31:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:54,495 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:54,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:54,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:54,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:54,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:54,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:54,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:54,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:31:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:54,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:31:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:54,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:54,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:54,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:54,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534718016] [2021-02-21 20:31:54,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:54,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:31:54,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665834548] [2021-02-21 20:31:54,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:31:54,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:54,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:31:54,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:31:54,830 INFO L87 Difference]: Start difference. First operand 814 states and 925 transitions. Second operand 6 states. [2021-02-21 20:31:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:56,653 INFO L93 Difference]: Finished difference Result 1141 states and 1301 transitions. [2021-02-21 20:31:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 20:31:56,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2021-02-21 20:31:56,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:56,661 INFO L225 Difference]: With dead ends: 1141 [2021-02-21 20:31:56,661 INFO L226 Difference]: Without dead ends: 915 [2021-02-21 20:31:56,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:31:56,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-02-21 20:31:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 889. [2021-02-21 20:31:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2021-02-21 20:31:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1011 transitions. [2021-02-21 20:31:56,818 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1011 transitions. Word has length 166 [2021-02-21 20:31:56,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:56,819 INFO L480 AbstractCegarLoop]: Abstraction has 889 states and 1011 transitions. [2021-02-21 20:31:56,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:31:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1011 transitions. [2021-02-21 20:31:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-21 20:31:56,822 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:56,822 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] [2021-02-21 20:31:56,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:31:56,823 INFO L428 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:56,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1334790231, now seen corresponding path program 1 times [2021-02-21 20:31:56,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:56,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444777892] [2021-02-21 20:31:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:56,827 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:56,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:56,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:56,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:56,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:56,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:57,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:57,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:57,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:31:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:57,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:57,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:31:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:57,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:57,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:31:57,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444777892] [2021-02-21 20:31:57,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:31:57,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:31:57,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059274922] [2021-02-21 20:31:57,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:31:57,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:31:57,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:31:57,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:31:57,182 INFO L87 Difference]: Start difference. First operand 889 states and 1011 transitions. Second operand 6 states. [2021-02-21 20:31:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:31:59,294 INFO L93 Difference]: Finished difference Result 893 states and 1014 transitions. [2021-02-21 20:31:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:31:59,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-21 20:31:59,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:31:59,300 INFO L225 Difference]: With dead ends: 893 [2021-02-21 20:31:59,301 INFO L226 Difference]: Without dead ends: 889 [2021-02-21 20:31:59,302 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 [2021-02-21 20:31:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-02-21 20:31:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 888. [2021-02-21 20:31:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2021-02-21 20:31:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1008 transitions. [2021-02-21 20:31:59,437 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1008 transitions. Word has length 170 [2021-02-21 20:31:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:31:59,438 INFO L480 AbstractCegarLoop]: Abstraction has 888 states and 1008 transitions. [2021-02-21 20:31:59,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:31:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1008 transitions. [2021-02-21 20:31:59,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-21 20:31:59,443 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:31:59,444 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] [2021-02-21 20:31:59,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:31:59,446 INFO L428 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:31:59,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:31:59,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1401291032, now seen corresponding path program 1 times [2021-02-21 20:31:59,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:31:59,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872846202] [2021-02-21 20:31:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:31:59,457 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:31:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:59,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:59,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:31:59,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:59,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:31:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:59,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:59,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:31:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:59,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:59,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:31:59,725 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-21 20:31:59,726 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-21 20:31:59,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:31:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:59,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:59,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-02-21 20:31:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:59,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:59,797 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-21 20:31:59,798 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-21 20:31:59,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 20:31:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:59,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:31:59,870 WARN L141 QuantifierPusher]: treesize reduction 23, result has 48.9 percent of original size [2021-02-21 20:31:59,871 WARN L147 QuantifierPusher]: treesize reduction 23, result has 48.9 percent of original size 22 [2021-02-21 20:31:59,909 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-21 20:31:59,910 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-21 20:31:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-21 20:31:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:31:59,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:31:59,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:31:59,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:00,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872846202] [2021-02-21 20:32:00,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:00,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:32:00,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324403945] [2021-02-21 20:32:00,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:32:00,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:00,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:32:00,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:32:00,167 INFO L87 Difference]: Start difference. First operand 888 states and 1008 transitions. Second operand 14 states. [2021-02-21 20:32:01,646 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2021-02-21 20:32:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:03,661 INFO L93 Difference]: Finished difference Result 1021 states and 1155 transitions. [2021-02-21 20:32:03,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-21 20:32:03,662 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 200 [2021-02-21 20:32:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:03,671 INFO L225 Difference]: With dead ends: 1021 [2021-02-21 20:32:03,672 INFO L226 Difference]: Without dead ends: 943 [2021-02-21 20:32:03,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2021-02-21 20:32:03,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-02-21 20:32:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 893. [2021-02-21 20:32:03,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2021-02-21 20:32:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1009 transitions. [2021-02-21 20:32:03,863 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1009 transitions. Word has length 200 [2021-02-21 20:32:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:03,873 INFO L480 AbstractCegarLoop]: Abstraction has 893 states and 1009 transitions. [2021-02-21 20:32:03,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:32:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1009 transitions. [2021-02-21 20:32:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-02-21 20:32:03,877 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:03,878 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] [2021-02-21 20:32:03,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:32:03,878 INFO L428 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:03,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:03,879 INFO L82 PathProgramCache]: Analyzing trace with hash 225944593, now seen corresponding path program 1 times [2021-02-21 20:32:03,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:03,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908273843] [2021-02-21 20:32:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:03,883 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:03,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:03,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:03,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:03,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:04,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:04,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:04,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:04,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:04,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:04,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:04,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:04,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:04,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:04,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-02-21 20:32:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:04,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:04,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:04,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:04,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:04,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 20:32:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:04,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:04,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:04,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:04,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-21 20:32:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:04,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:04,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:04,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:04,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:04,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:04,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:04,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908273843] [2021-02-21 20:32:04,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:04,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:32:04,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994409163] [2021-02-21 20:32:04,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:32:04,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:04,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:32:04,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:32:04,273 INFO L87 Difference]: Start difference. First operand 893 states and 1009 transitions. Second operand 8 states. [2021-02-21 20:32:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:06,629 INFO L93 Difference]: Finished difference Result 1079 states and 1230 transitions. [2021-02-21 20:32:06,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 20:32:06,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2021-02-21 20:32:06,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:06,636 INFO L225 Difference]: With dead ends: 1079 [2021-02-21 20:32:06,637 INFO L226 Difference]: Without dead ends: 940 [2021-02-21 20:32:06,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:32:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-02-21 20:32:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 899. [2021-02-21 20:32:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2021-02-21 20:32:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1018 transitions. [2021-02-21 20:32:06,805 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1018 transitions. Word has length 202 [2021-02-21 20:32:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:06,806 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1018 transitions. [2021-02-21 20:32:06,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:32:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1018 transitions. [2021-02-21 20:32:06,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-02-21 20:32:06,810 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:06,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:32:06,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:32:06,811 INFO L428 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2079003683, now seen corresponding path program 1 times [2021-02-21 20:32:06,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:06,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572787194] [2021-02-21 20:32:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:06,815 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:06,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:06,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:06,873 WARN L141 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-02-21 20:32:06,874 WARN L147 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size 8 [2021-02-21 20:32:06,881 WARN L141 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-02-21 20:32:06,881 WARN L147 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size 8 [2021-02-21 20:32:06,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:06,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:06,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:06,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:06,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:07,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:07,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:07,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:07,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:32:07,036 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-21 20:32:07,040 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-21 20:32:07,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:07,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:07,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:07,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 20:32:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:07,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:07,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:07,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:07,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:32:07,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 20:32:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:07,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:07,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:07,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:07,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-21 20:32:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:07,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:07,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:07,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:07,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:07,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:07,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572787194] [2021-02-21 20:32:07,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:07,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 20:32:07,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831288823] [2021-02-21 20:32:07,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 20:32:07,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:07,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 20:32:07,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:32:07,257 INFO L87 Difference]: Start difference. First operand 899 states and 1018 transitions. Second operand 13 states. [2021-02-21 20:32:07,999 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2021-02-21 20:32:10,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:10,441 INFO L93 Difference]: Finished difference Result 941 states and 1065 transitions. [2021-02-21 20:32:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 20:32:10,442 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 197 [2021-02-21 20:32:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:10,447 INFO L225 Difference]: With dead ends: 941 [2021-02-21 20:32:10,447 INFO L226 Difference]: Without dead ends: 933 [2021-02-21 20:32:10,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2021-02-21 20:32:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2021-02-21 20:32:10,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 904. [2021-02-21 20:32:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2021-02-21 20:32:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1024 transitions. [2021-02-21 20:32:10,623 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1024 transitions. Word has length 197 [2021-02-21 20:32:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:10,624 INFO L480 AbstractCegarLoop]: Abstraction has 904 states and 1024 transitions. [2021-02-21 20:32:10,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 20:32:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1024 transitions. [2021-02-21 20:32:10,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-02-21 20:32:10,629 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:10,629 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] [2021-02-21 20:32:10,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:32:10,630 INFO L428 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:10,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:10,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1433078497, now seen corresponding path program 1 times [2021-02-21 20:32:10,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:10,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373835596] [2021-02-21 20:32:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:10,633 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:10,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:10,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:10,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:10,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:32:10,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:10,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:10,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:10,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:10,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:10,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:10,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:10,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:10,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:10,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 20:32:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:10,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:10,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:10,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 20:32:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:10,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:10,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-21 20:32:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:10,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:10,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:10,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373835596] [2021-02-21 20:32:10,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:10,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:32:10,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322342386] [2021-02-21 20:32:10,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:32:10,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:10,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:32:10,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:32:10,965 INFO L87 Difference]: Start difference. First operand 904 states and 1024 transitions. Second operand 8 states. [2021-02-21 20:32:12,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:12,139 INFO L93 Difference]: Finished difference Result 928 states and 1052 transitions. [2021-02-21 20:32:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:32:12,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2021-02-21 20:32:12,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:12,147 INFO L225 Difference]: With dead ends: 928 [2021-02-21 20:32:12,147 INFO L226 Difference]: Without dead ends: 908 [2021-02-21 20:32:12,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:32:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-02-21 20:32:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 899. [2021-02-21 20:32:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2021-02-21 20:32:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1015 transitions. [2021-02-21 20:32:12,319 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1015 transitions. Word has length 197 [2021-02-21 20:32:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:12,320 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1015 transitions. [2021-02-21 20:32:12,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:32:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1015 transitions. [2021-02-21 20:32:12,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-21 20:32:12,324 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:12,324 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] [2021-02-21 20:32:12,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:32:12,324 INFO L428 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:12,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1483697005, now seen corresponding path program 1 times [2021-02-21 20:32:12,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:12,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355954088] [2021-02-21 20:32:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:12,328 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:12,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:12,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:12,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:12,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:12,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:12,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:12,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:12,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:12,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:12,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-02-21 20:32:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:12,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:12,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:12,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:12,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:12,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 20:32:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:12,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:12,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:12,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:12,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-21 20:32:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:12,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:12,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:12,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:12,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:12,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355954088] [2021-02-21 20:32:12,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:12,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-21 20:32:12,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877309515] [2021-02-21 20:32:12,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-21 20:32:12,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:12,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-21 20:32:12,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-02-21 20:32:12,833 INFO L87 Difference]: Start difference. First operand 899 states and 1015 transitions. Second operand 17 states. [2021-02-21 20:32:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:16,682 INFO L93 Difference]: Finished difference Result 926 states and 1044 transitions. [2021-02-21 20:32:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 20:32:16,683 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 198 [2021-02-21 20:32:16,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:16,688 INFO L225 Difference]: With dead ends: 926 [2021-02-21 20:32:16,689 INFO L226 Difference]: Without dead ends: 901 [2021-02-21 20:32:16,691 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 [2021-02-21 20:32:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2021-02-21 20:32:16,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 892. [2021-02-21 20:32:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2021-02-21 20:32:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1005 transitions. [2021-02-21 20:32:16,872 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1005 transitions. Word has length 198 [2021-02-21 20:32:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:16,872 INFO L480 AbstractCegarLoop]: Abstraction has 892 states and 1005 transitions. [2021-02-21 20:32:16,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-21 20:32:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1005 transitions. [2021-02-21 20:32:16,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-02-21 20:32:16,877 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:16,877 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] [2021-02-21 20:32:16,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 20:32:16,878 INFO L428 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:16,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1648271953, now seen corresponding path program 1 times [2021-02-21 20:32:16,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:16,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308900914] [2021-02-21 20:32:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:16,881 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:16,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:16,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:16,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:16,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:16,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:16,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:16,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:16,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:17,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:17,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:17,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:17,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:17,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:17,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:17,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-02-21 20:32:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:17,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:17,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:17,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:17,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:17,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 20:32:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:17,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:17,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:17,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:17,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:17,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308900914] [2021-02-21 20:32:17,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:17,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 20:32:17,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639228581] [2021-02-21 20:32:17,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 20:32:17,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:17,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 20:32:17,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:32:17,219 INFO L87 Difference]: Start difference. First operand 892 states and 1005 transitions. Second operand 13 states. [2021-02-21 20:32:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:20,425 INFO L93 Difference]: Finished difference Result 919 states and 1034 transitions. [2021-02-21 20:32:20,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 20:32:20,425 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 201 [2021-02-21 20:32:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:20,430 INFO L225 Difference]: With dead ends: 919 [2021-02-21 20:32:20,430 INFO L226 Difference]: Without dead ends: 805 [2021-02-21 20:32:20,431 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 [2021-02-21 20:32:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-02-21 20:32:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 796. [2021-02-21 20:32:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2021-02-21 20:32:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 899 transitions. [2021-02-21 20:32:20,583 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 899 transitions. Word has length 201 [2021-02-21 20:32:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:20,583 INFO L480 AbstractCegarLoop]: Abstraction has 796 states and 899 transitions. [2021-02-21 20:32:20,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 20:32:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 899 transitions. [2021-02-21 20:32:20,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-02-21 20:32:20,587 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:20,588 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] [2021-02-21 20:32:20,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 20:32:20,588 INFO L428 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:20,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:20,589 INFO L82 PathProgramCache]: Analyzing trace with hash -151446723, now seen corresponding path program 1 times [2021-02-21 20:32:20,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:20,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557922851] [2021-02-21 20:32:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:20,595 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:20,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:20,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:20,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:20,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:20,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:20,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:20,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:20,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:20,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:20,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:20,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-02-21 20:32:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:20,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:20,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:20,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:20,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:20,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 20:32:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:20,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:20,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:20,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:20,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:20,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-21 20:32:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:21,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:21,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:21,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:21,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:21,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:21,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:21,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557922851] [2021-02-21 20:32:21,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:21,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-21 20:32:21,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843095620] [2021-02-21 20:32:21,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-21 20:32:21,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:21,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-21 20:32:21,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-02-21 20:32:21,093 INFO L87 Difference]: Start difference. First operand 796 states and 899 transitions. Second operand 17 states. [2021-02-21 20:32:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:24,435 INFO L93 Difference]: Finished difference Result 823 states and 928 transitions. [2021-02-21 20:32:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-21 20:32:24,435 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 203 [2021-02-21 20:32:24,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:24,440 INFO L225 Difference]: With dead ends: 823 [2021-02-21 20:32:24,441 INFO L226 Difference]: Without dead ends: 766 [2021-02-21 20:32:24,442 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 [2021-02-21 20:32:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-02-21 20:32:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 757. [2021-02-21 20:32:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2021-02-21 20:32:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 854 transitions. [2021-02-21 20:32:24,591 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 854 transitions. Word has length 203 [2021-02-21 20:32:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:24,591 INFO L480 AbstractCegarLoop]: Abstraction has 757 states and 854 transitions. [2021-02-21 20:32:24,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-21 20:32:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 854 transitions. [2021-02-21 20:32:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-02-21 20:32:24,596 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:24,596 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] [2021-02-21 20:32:24,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 20:32:24,596 INFO L428 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:24,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:24,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2062563398, now seen corresponding path program 1 times [2021-02-21 20:32:24,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:24,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391456635] [2021-02-21 20:32:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:24,602 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:24,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:24,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:24,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:24,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:24,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:24,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:24,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:24,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-21 20:32:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:24,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:24,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:24,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:24,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391456635] [2021-02-21 20:32:24,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:24,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:32:24,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826893954] [2021-02-21 20:32:24,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:32:24,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:24,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:32:24,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:32:24,917 INFO L87 Difference]: Start difference. First operand 757 states and 854 transitions. Second operand 8 states. [2021-02-21 20:32:27,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:27,299 INFO L93 Difference]: Finished difference Result 812 states and 911 transitions. [2021-02-21 20:32:27,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:32:27,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 205 [2021-02-21 20:32:27,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:27,304 INFO L225 Difference]: With dead ends: 812 [2021-02-21 20:32:27,304 INFO L226 Difference]: Without dead ends: 704 [2021-02-21 20:32:27,305 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 [2021-02-21 20:32:27,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-02-21 20:32:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 676. [2021-02-21 20:32:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2021-02-21 20:32:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 756 transitions. [2021-02-21 20:32:27,435 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 756 transitions. Word has length 205 [2021-02-21 20:32:27,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:27,436 INFO L480 AbstractCegarLoop]: Abstraction has 676 states and 756 transitions. [2021-02-21 20:32:27,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:32:27,436 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 756 transitions. [2021-02-21 20:32:27,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-02-21 20:32:27,438 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:27,438 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] [2021-02-21 20:32:27,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 20:32:27,439 INFO L428 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:27,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:27,439 INFO L82 PathProgramCache]: Analyzing trace with hash 299365844, now seen corresponding path program 1 times [2021-02-21 20:32:27,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:27,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746506699] [2021-02-21 20:32:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:27,442 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:27,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:27,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:27,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:27,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:27,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:27,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:27,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:27,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:27,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-02-21 20:32:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:27,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:27,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:27,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:27,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-02-21 20:32:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:27,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:27,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:27,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:27,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:27,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746506699] [2021-02-21 20:32:27,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:27,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:32:27,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046972031] [2021-02-21 20:32:27,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:32:27,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:32:27,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:32:27,815 INFO L87 Difference]: Start difference. First operand 676 states and 756 transitions. Second operand 14 states. [2021-02-21 20:32:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:30,714 INFO L93 Difference]: Finished difference Result 715 states and 797 transitions. [2021-02-21 20:32:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 20:32:30,716 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 212 [2021-02-21 20:32:30,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:30,721 INFO L225 Difference]: With dead ends: 715 [2021-02-21 20:32:30,721 INFO L226 Difference]: Without dead ends: 669 [2021-02-21 20:32:30,722 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 [2021-02-21 20:32:30,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-02-21 20:32:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 660. [2021-02-21 20:32:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2021-02-21 20:32:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 737 transitions. [2021-02-21 20:32:30,861 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 737 transitions. Word has length 212 [2021-02-21 20:32:30,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:30,863 INFO L480 AbstractCegarLoop]: Abstraction has 660 states and 737 transitions. [2021-02-21 20:32:30,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:32:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 737 transitions. [2021-02-21 20:32:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-02-21 20:32:30,866 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:30,866 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] [2021-02-21 20:32:30,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 20:32:30,866 INFO L428 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:30,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:30,867 INFO L82 PathProgramCache]: Analyzing trace with hash -133726549, now seen corresponding path program 1 times [2021-02-21 20:32:30,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:30,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575441878] [2021-02-21 20:32:30,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:30,870 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:30,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:30,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:30,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:30,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:30,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:30,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:30,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:30,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:30,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:31,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:31,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:31,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:31,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:31,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-02-21 20:32:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:31,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:31,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:31,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:31,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 20:32:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:31,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:31,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:31,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:32:31,188 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-21 20:32:31,189 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-21 20:32:31,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:31,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575441878] [2021-02-21 20:32:31,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:31,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 20:32:31,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113105371] [2021-02-21 20:32:31,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 20:32:31,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:31,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 20:32:31,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:32:31,249 INFO L87 Difference]: Start difference. First operand 660 states and 737 transitions. Second operand 13 states. [2021-02-21 20:32:33,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:33,996 INFO L93 Difference]: Finished difference Result 910 states and 1018 transitions. [2021-02-21 20:32:33,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-21 20:32:33,997 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 213 [2021-02-21 20:32:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:34,003 INFO L225 Difference]: With dead ends: 910 [2021-02-21 20:32:34,003 INFO L226 Difference]: Without dead ends: 874 [2021-02-21 20:32:34,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2021-02-21 20:32:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-02-21 20:32:34,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 674. [2021-02-21 20:32:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2021-02-21 20:32:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 754 transitions. [2021-02-21 20:32:34,142 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 754 transitions. Word has length 213 [2021-02-21 20:32:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:34,143 INFO L480 AbstractCegarLoop]: Abstraction has 674 states and 754 transitions. [2021-02-21 20:32:34,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 20:32:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 754 transitions. [2021-02-21 20:32:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-02-21 20:32:34,145 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:34,145 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] [2021-02-21 20:32:34,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 20:32:34,146 INFO L428 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:34,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:34,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1609640836, now seen corresponding path program 1 times [2021-02-21 20:32:34,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:34,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150720390] [2021-02-21 20:32:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:34,149 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:34,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:34,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:34,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:34,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:34,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:34,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:34,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:34,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:34,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:34,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:34,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-02-21 20:32:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:34,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:34,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:34,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:34,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:34,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-21 20:32:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:34,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:34,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:34,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:34,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:34,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150720390] [2021-02-21 20:32:34,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:34,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:32:34,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015043228] [2021-02-21 20:32:34,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:32:34,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:34,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:32:34,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:32:34,480 INFO L87 Difference]: Start difference. First operand 674 states and 754 transitions. Second operand 14 states. [2021-02-21 20:32:37,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:37,466 INFO L93 Difference]: Finished difference Result 713 states and 795 transitions. [2021-02-21 20:32:37,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 20:32:37,467 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 213 [2021-02-21 20:32:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:37,471 INFO L225 Difference]: With dead ends: 713 [2021-02-21 20:32:37,471 INFO L226 Difference]: Without dead ends: 650 [2021-02-21 20:32:37,472 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 [2021-02-21 20:32:37,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-02-21 20:32:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 641. [2021-02-21 20:32:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2021-02-21 20:32:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 698 transitions. [2021-02-21 20:32:37,603 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 698 transitions. Word has length 213 [2021-02-21 20:32:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:37,604 INFO L480 AbstractCegarLoop]: Abstraction has 641 states and 698 transitions. [2021-02-21 20:32:37,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:32:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 698 transitions. [2021-02-21 20:32:37,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-02-21 20:32:37,606 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:37,606 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] [2021-02-21 20:32:37,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-21 20:32:37,607 INFO L428 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:37,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:37,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1055802081, now seen corresponding path program 1 times [2021-02-21 20:32:37,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:37,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800750947] [2021-02-21 20:32:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:37,610 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:37,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:37,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:37,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:37,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:32:37,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:37,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:37,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:32:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:37,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:37,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:37,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-21 20:32:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:37,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:37,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:37,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-02-21 20:32:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:37,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:37,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:37,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-21 20:32:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:37,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:37,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:37,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-02-21 20:32:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:37,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:37,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:37,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-02-21 20:32:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:32:37,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:37,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:32:37,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:32:37,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:32:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:32:37,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800750947] [2021-02-21 20:32:37,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:32:37,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:32:37,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016848985] [2021-02-21 20:32:37,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:32:37,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:32:37,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:32:37,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:32:37,873 INFO L87 Difference]: Start difference. First operand 641 states and 698 transitions. Second operand 8 states. [2021-02-21 20:32:39,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:32:39,061 INFO L93 Difference]: Finished difference Result 764 states and 838 transitions. [2021-02-21 20:32:39,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:32:39,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2021-02-21 20:32:39,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:32:39,064 INFO L225 Difference]: With dead ends: 764 [2021-02-21 20:32:39,064 INFO L226 Difference]: Without dead ends: 668 [2021-02-21 20:32:39,065 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 [2021-02-21 20:32:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-02-21 20:32:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 637. [2021-02-21 20:32:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2021-02-21 20:32:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 691 transitions. [2021-02-21 20:32:39,205 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 691 transitions. Word has length 221 [2021-02-21 20:32:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:32:39,206 INFO L480 AbstractCegarLoop]: Abstraction has 637 states and 691 transitions. [2021-02-21 20:32:39,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:32:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 691 transitions. [2021-02-21 20:32:39,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-02-21 20:32:39,209 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:32:39,209 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] [2021-02-21 20:32:39,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-21 20:32:39,210 INFO L428 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:32:39,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:32:39,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1803568816, now seen corresponding path program 1 times [2021-02-21 20:32:39,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:32:39,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116375145] [2021-02-21 20:32:39,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:32:39,213 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:32:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:32:39,235 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:32:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:32:39,260 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:32:39,419 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:32:39,420 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:32:39,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-21 20:32:39,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:32:39 BoogieIcfgContainer [2021-02-21 20:32:39,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:32:39,455 INFO L168 Benchmark]: Toolchain (without parser) took 54097.66 ms. Allocated memory was 151.0 MB in the beginning and 534.8 MB in the end (delta: 383.8 MB). Free memory was 127.1 MB in the beginning and 500.0 MB in the end (delta: -372.9 MB). Peak memory consumption was 324.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:32:39,456 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:32:39,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.21 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 106.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:32:39,456 INFO L168 Benchmark]: Boogie Preprocessor took 77.71 ms. Allocated memory is still 151.0 MB. Free memory was 106.8 MB in the beginning and 103.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:32:39,456 INFO L168 Benchmark]: RCFGBuilder took 1765.79 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 78.6 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:32:39,457 INFO L168 Benchmark]: TraceAbstraction took 51598.40 ms. Allocated memory was 151.0 MB in the beginning and 534.8 MB in the end (delta: 383.8 MB). Free memory was 78.1 MB in the beginning and 500.0 MB in the end (delta: -421.9 MB). Peak memory consumption was 274.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:32:39,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 635.21 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 106.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.71 ms. Allocated memory is still 151.0 MB. Free memory was 106.8 MB in the beginning and 103.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1765.79 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 78.6 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 51598.40 ms. Allocated memory was 151.0 MB in the beginning and 534.8 MB in the end (delta: 383.8 MB). Free memory was 78.1 MB in the beginning and 500.0 MB in the end (delta: -421.9 MB). Peak memory consumption was 274.4 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: 51.5s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 41.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10372 SDtfs, 17674 SDslu, 18554 SDs, 0 SdLazy, 33751 SolverSat, 1258 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 6.6s 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...