/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 0.2.0-b8ad66e [2020-10-23 20:30:04,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:30:04,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:30:04,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:30:04,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:30:04,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:30:04,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:30:04,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:30:04,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:30:04,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:30:04,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:30:04,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:30:04,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:30:04,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:30:04,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:30:04,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:30:04,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:30:04,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:30:04,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:30:04,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:30:04,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:30:04,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:30:04,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:30:04,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:30:04,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:30:04,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:30:04,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:30:04,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:30:04,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:30:04,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:30:04,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:30:04,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:30:04,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:30:04,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:30:04,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:30:04,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:30:04,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:30:04,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:30:04,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:30:04,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:30:04,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:30:04,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:30:04,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:30:04,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:30:04,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:30:04,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:30:04,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:30:04,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:30:04,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:30:04,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:30:04,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:30:04,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:30:04,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:30:04,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:30:04,690 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:30:04,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:30:04,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:30:04,691 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:30:04,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:30:04,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:30:04,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:30:04,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:30:04,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:30:04,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:30:04,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:30:05,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:30:05,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:30:05,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:30:05,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:30:05,178 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:30:05,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-10-23 20:30:05,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ab1dd72/f130d7dd290c4f0f8b3fbd3b5154a29a/FLAGfff8c60ab [2020-10-23 20:30:05,894 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:30:05,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-10-23 20:30:05,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ab1dd72/f130d7dd290c4f0f8b3fbd3b5154a29a/FLAGfff8c60ab [2020-10-23 20:30:06,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ab1dd72/f130d7dd290c4f0f8b3fbd3b5154a29a [2020-10-23 20:30:06,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:30:06,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:30:06,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:30:06,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:30:06,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:30:06,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:30:06" (1/1) ... [2020-10-23 20:30:06,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9f658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06, skipping insertion in model container [2020-10-23 20:30:06,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:30:06" (1/1) ... [2020-10-23 20:30:06,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:30:06,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:30:06,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:30:06,582 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:30:06,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:30:06,696 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:30:06,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06 WrapperNode [2020-10-23 20:30:06,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:30:06,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:30:06,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:30:06,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:30:06,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06" (1/1) ... [2020-10-23 20:30:06,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06" (1/1) ... [2020-10-23 20:30:06,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06" (1/1) ... [2020-10-23 20:30:06,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06" (1/1) ... [2020-10-23 20:30:06,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06" (1/1) ... [2020-10-23 20:30:06,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06" (1/1) ... [2020-10-23 20:30:06,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06" (1/1) ... [2020-10-23 20:30:06,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:30:06,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:30:06,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:30:06,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:30:06,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06" (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 [2020-10-23 20:30:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:30:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:30:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:30:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-23 20:30:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-23 20:30:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-10-23 20:30:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:30:06,916 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-23 20:30:06,916 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-23 20:30:06,916 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-23 20:30:06,916 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-23 20:30:06,916 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-23 20:30:06,917 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-10-23 20:30:06,917 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-10-23 20:30:06,917 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-10-23 20:30:06,917 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-10-23 20:30:06,917 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-23 20:30:06,918 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-10-23 20:30:06,918 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-23 20:30:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:30:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:30:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:30:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:30:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-23 20:30:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:30:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-23 20:30:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-10-23 20:30:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-23 20:30:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-23 20:30:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-23 20:30:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-10-23 20:30:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-10-23 20:30:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-10-23 20:30:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-10-23 20:30:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-23 20:30:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-10-23 20:30:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-23 20:30:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-23 20:30:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-23 20:30:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-23 20:30:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:30:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-23 20:30:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:30:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:30:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:30:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:30:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:30:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:30:07,475 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-23 20:30:07,723 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-10-23 20:30:07,724 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-10-23 20:30:07,738 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-23 20:30:07,819 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-23 20:30:07,820 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-23 20:30:08,060 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-23 20:30:08,107 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-23 20:30:08,107 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-23 20:30:08,124 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-23 20:30:08,530 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-10-23 20:30:08,530 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-10-23 20:30:08,549 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-23 20:30:08,620 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-23 20:30:08,621 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-23 20:30:08,655 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-23 20:30:08,740 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-23 20:30:08,740 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-23 20:30:08,871 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:30:08,872 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:30:08,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:30:08 BoogieIcfgContainer [2020-10-23 20:30:08,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:30:08,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:30:08,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:30:08,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:30:08,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:30:06" (1/3) ... [2020-10-23 20:30:08,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643c1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:30:08, skipping insertion in model container [2020-10-23 20:30:08,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:30:06" (2/3) ... [2020-10-23 20:30:08,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643c1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:30:08, skipping insertion in model container [2020-10-23 20:30:08,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:30:08" (3/3) ... [2020-10-23 20:30:08,884 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-10-23 20:30:08,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:30:08,901 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:30:08,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:30:08,940 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:30:08,940 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:30:08,940 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:30:08,940 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:30:08,941 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:30:08,941 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:30:08,941 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:30:08,941 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:30:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states. [2020-10-23 20:30:08,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-23 20:30:08,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:08,987 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] [2020-10-23 20:30:08,987 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:08,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:08,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1780206384, now seen corresponding path program 1 times [2020-10-23 20:30:09,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:09,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296398754] [2020-10-23 20:30:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:09,074 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,496 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-23 20:30:09,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:09,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296398754] [2020-10-23 20:30:09,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:09,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:30:09,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631563783] [2020-10-23 20:30:09,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:30:09,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:09,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:30:09,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:30:09,692 INFO L87 Difference]: Start difference. First operand 679 states. Second operand 5 states. [2020-10-23 20:30:12,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:12,146 INFO L93 Difference]: Finished difference Result 1049 states and 1261 transitions. [2020-10-23 20:30:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:30:12,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-23 20:30:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:12,195 INFO L225 Difference]: With dead ends: 1049 [2020-10-23 20:30:12,195 INFO L226 Difference]: Without dead ends: 718 [2020-10-23 20:30:12,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:30:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-10-23 20:30:12,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 664. [2020-10-23 20:30:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-10-23 20:30:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 759 transitions. [2020-10-23 20:30:12,410 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 759 transitions. Word has length 94 [2020-10-23 20:30:12,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:12,411 INFO L481 AbstractCegarLoop]: Abstraction has 664 states and 759 transitions. [2020-10-23 20:30:12,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:30:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 759 transitions. [2020-10-23 20:30:12,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-23 20:30:12,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:12,417 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] [2020-10-23 20:30:12,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:30:12,418 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:12,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:12,419 INFO L82 PathProgramCache]: Analyzing trace with hash 703865915, now seen corresponding path program 1 times [2020-10-23 20:30:12,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:12,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946525389] [2020-10-23 20:30:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:12,424 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:12,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:12,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:12,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946525389] [2020-10-23 20:30:12,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:12,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:30:12,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850561108] [2020-10-23 20:30:12,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:30:12,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:12,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:30:12,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:30:12,790 INFO L87 Difference]: Start difference. First operand 664 states and 759 transitions. Second operand 6 states. [2020-10-23 20:30:15,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:15,069 INFO L93 Difference]: Finished difference Result 987 states and 1142 transitions. [2020-10-23 20:30:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 20:30:15,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-10-23 20:30:15,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:15,086 INFO L225 Difference]: With dead ends: 987 [2020-10-23 20:30:15,086 INFO L226 Difference]: Without dead ends: 895 [2020-10-23 20:30:15,089 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 [2020-10-23 20:30:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-10-23 20:30:15,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 815. [2020-10-23 20:30:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-23 20:30:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 926 transitions. [2020-10-23 20:30:15,242 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 926 transitions. Word has length 145 [2020-10-23 20:30:15,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:15,247 INFO L481 AbstractCegarLoop]: Abstraction has 815 states and 926 transitions. [2020-10-23 20:30:15,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:30:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 926 transitions. [2020-10-23 20:30:15,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:30:15,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:15,263 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] [2020-10-23 20:30:15,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:30:15,264 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:15,265 INFO L82 PathProgramCache]: Analyzing trace with hash -43861484, now seen corresponding path program 1 times [2020-10-23 20:30:15,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:15,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807887483] [2020-10-23 20:30:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:15,272 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:15,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:15,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:15,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807887483] [2020-10-23 20:30:15,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:15,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:30:15,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699297474] [2020-10-23 20:30:15,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:30:15,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:15,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:30:15,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:30:15,678 INFO L87 Difference]: Start difference. First operand 815 states and 926 transitions. Second operand 6 states. [2020-10-23 20:30:16,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:16,774 INFO L93 Difference]: Finished difference Result 1144 states and 1304 transitions. [2020-10-23 20:30:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 20:30:16,775 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-10-23 20:30:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:16,781 INFO L225 Difference]: With dead ends: 1144 [2020-10-23 20:30:16,782 INFO L226 Difference]: Without dead ends: 917 [2020-10-23 20:30:16,783 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 [2020-10-23 20:30:16,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-10-23 20:30:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 890. [2020-10-23 20:30:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-10-23 20:30:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1012 transitions. [2020-10-23 20:30:16,926 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1012 transitions. Word has length 167 [2020-10-23 20:30:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:16,927 INFO L481 AbstractCegarLoop]: Abstraction has 890 states and 1012 transitions. [2020-10-23 20:30:16,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:30:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1012 transitions. [2020-10-23 20:30:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-23 20:30:16,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:16,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:30:16,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:30:16,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:16,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1343784413, now seen corresponding path program 1 times [2020-10-23 20:30:16,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:16,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484491944] [2020-10-23 20:30:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:16,935 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:17,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:17,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:17,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484491944] [2020-10-23 20:30:17,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:17,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:30:17,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162903222] [2020-10-23 20:30:17,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:30:17,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:17,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:30:17,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:30:17,225 INFO L87 Difference]: Start difference. First operand 890 states and 1012 transitions. Second operand 6 states. [2020-10-23 20:30:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:19,454 INFO L93 Difference]: Finished difference Result 895 states and 1016 transitions. [2020-10-23 20:30:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:30:19,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-23 20:30:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:19,460 INFO L225 Difference]: With dead ends: 895 [2020-10-23 20:30:19,460 INFO L226 Difference]: Without dead ends: 890 [2020-10-23 20:30:19,461 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 [2020-10-23 20:30:19,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-10-23 20:30:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 889. [2020-10-23 20:30:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-10-23 20:30:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1009 transitions. [2020-10-23 20:30:19,596 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1009 transitions. Word has length 171 [2020-10-23 20:30:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:19,597 INFO L481 AbstractCegarLoop]: Abstraction has 889 states and 1009 transitions. [2020-10-23 20:30:19,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:30:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1009 transitions. [2020-10-23 20:30:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-23 20:30:19,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:19,602 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] [2020-10-23 20:30:19,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:30:19,602 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:19,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:19,603 INFO L82 PathProgramCache]: Analyzing trace with hash -111534163, now seen corresponding path program 1 times [2020-10-23 20:30:19,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:19,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617816975] [2020-10-23 20:30:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:19,606 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:19,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:30:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:19,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:30:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:19,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 20:30:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:20,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617816975] [2020-10-23 20:30:20,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:20,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:30:20,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360847139] [2020-10-23 20:30:20,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:30:20,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:20,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:30:20,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:30:20,130 INFO L87 Difference]: Start difference. First operand 889 states and 1009 transitions. Second operand 14 states. [2020-10-23 20:30:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:23,821 INFO L93 Difference]: Finished difference Result 1009 states and 1140 transitions. [2020-10-23 20:30:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:30:23,823 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-10-23 20:30:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:23,830 INFO L225 Difference]: With dead ends: 1009 [2020-10-23 20:30:23,831 INFO L226 Difference]: Without dead ends: 930 [2020-10-23 20:30:23,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-23 20:30:23,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-10-23 20:30:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 894. [2020-10-23 20:30:23,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-10-23 20:30:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1010 transitions. [2020-10-23 20:30:23,995 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1010 transitions. Word has length 196 [2020-10-23 20:30:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:23,995 INFO L481 AbstractCegarLoop]: Abstraction has 894 states and 1010 transitions. [2020-10-23 20:30:23,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:30:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1010 transitions. [2020-10-23 20:30:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-23 20:30:23,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:23,999 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] [2020-10-23 20:30:24,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:30:24,000 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:24,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:24,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1038055060, now seen corresponding path program 1 times [2020-10-23 20:30:24,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:24,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536060413] [2020-10-23 20:30:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:24,007 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:30:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:30:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 20:30:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:24,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536060413] [2020-10-23 20:30:24,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:24,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:30:24,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032169498] [2020-10-23 20:30:24,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:30:24,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:24,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:30:24,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:30:24,329 INFO L87 Difference]: Start difference. First operand 894 states and 1010 transitions. Second operand 8 states. [2020-10-23 20:30:26,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:26,119 INFO L93 Difference]: Finished difference Result 1081 states and 1232 transitions. [2020-10-23 20:30:26,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 20:30:26,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-10-23 20:30:26,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:26,127 INFO L225 Difference]: With dead ends: 1081 [2020-10-23 20:30:26,127 INFO L226 Difference]: Without dead ends: 941 [2020-10-23 20:30:26,129 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 [2020-10-23 20:30:26,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2020-10-23 20:30:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 900. [2020-10-23 20:30:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-10-23 20:30:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1019 transitions. [2020-10-23 20:30:26,266 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1019 transitions. Word has length 198 [2020-10-23 20:30:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:26,266 INFO L481 AbstractCegarLoop]: Abstraction has 900 states and 1019 transitions. [2020-10-23 20:30:26,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:30:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1019 transitions. [2020-10-23 20:30:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-23 20:30:26,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:26,271 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] [2020-10-23 20:30:26,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:30:26,271 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:26,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:26,272 INFO L82 PathProgramCache]: Analyzing trace with hash 963958808, now seen corresponding path program 1 times [2020-10-23 20:30:26,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:26,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829707809] [2020-10-23 20:30:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:26,275 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:26,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:30:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:30:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:26,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 20:30:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:26,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829707809] [2020-10-23 20:30:26,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:26,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:30:26,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430539329] [2020-10-23 20:30:26,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:30:26,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:26,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:30:26,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:30:26,709 INFO L87 Difference]: Start difference. First operand 900 states and 1019 transitions. Second operand 13 states. [2020-10-23 20:30:27,179 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-23 20:30:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:28,521 INFO L93 Difference]: Finished difference Result 944 states and 1068 transitions. [2020-10-23 20:30:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 20:30:28,522 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 198 [2020-10-23 20:30:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:28,528 INFO L225 Difference]: With dead ends: 944 [2020-10-23 20:30:28,529 INFO L226 Difference]: Without dead ends: 935 [2020-10-23 20:30:28,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-23 20:30:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-10-23 20:30:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 905. [2020-10-23 20:30:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-23 20:30:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1025 transitions. [2020-10-23 20:30:28,707 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1025 transitions. Word has length 198 [2020-10-23 20:30:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:28,707 INFO L481 AbstractCegarLoop]: Abstraction has 905 states and 1025 transitions. [2020-10-23 20:30:28,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:30:28,708 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1025 transitions. [2020-10-23 20:30:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-23 20:30:28,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:28,712 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] [2020-10-23 20:30:28,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:30:28,712 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:28,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1830643308, now seen corresponding path program 1 times [2020-10-23 20:30:28,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:28,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301999677] [2020-10-23 20:30:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:28,718 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:28,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:28,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:28,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:30:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:30:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:28,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 20:30:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:29,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301999677] [2020-10-23 20:30:29,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:29,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:30:29,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926446803] [2020-10-23 20:30:29,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:30:29,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:29,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:30:29,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:30:29,049 INFO L87 Difference]: Start difference. First operand 905 states and 1025 transitions. Second operand 8 states. [2020-10-23 20:30:30,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:30,672 INFO L93 Difference]: Finished difference Result 930 states and 1054 transitions. [2020-10-23 20:30:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:30:30,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-10-23 20:30:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:30,682 INFO L225 Difference]: With dead ends: 930 [2020-10-23 20:30:30,682 INFO L226 Difference]: Without dead ends: 909 [2020-10-23 20:30:30,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:30:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-10-23 20:30:30,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 900. [2020-10-23 20:30:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-10-23 20:30:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1016 transitions. [2020-10-23 20:30:30,848 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1016 transitions. Word has length 198 [2020-10-23 20:30:30,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:30,849 INFO L481 AbstractCegarLoop]: Abstraction has 900 states and 1016 transitions. [2020-10-23 20:30:30,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:30:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1016 transitions. [2020-10-23 20:30:30,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-23 20:30:30,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:30,853 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] [2020-10-23 20:30:30,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:30:30,854 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:30,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:30,854 INFO L82 PathProgramCache]: Analyzing trace with hash -669509211, now seen corresponding path program 1 times [2020-10-23 20:30:30,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:30,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458446870] [2020-10-23 20:30:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:30,859 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:31,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:31,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:30:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:31,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:30:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:31,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 20:30:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:31,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458446870] [2020-10-23 20:30:31,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:31,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-23 20:30:31,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959905044] [2020-10-23 20:30:31,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-23 20:30:31,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:31,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-23 20:30:31,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:30:31,261 INFO L87 Difference]: Start difference. First operand 900 states and 1016 transitions. Second operand 17 states. [2020-10-23 20:30:34,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:34,872 INFO L93 Difference]: Finished difference Result 928 states and 1046 transitions. [2020-10-23 20:30:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:30:34,872 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 199 [2020-10-23 20:30:34,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:34,877 INFO L225 Difference]: With dead ends: 928 [2020-10-23 20:30:34,877 INFO L226 Difference]: Without dead ends: 902 [2020-10-23 20:30:34,878 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 [2020-10-23 20:30:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-10-23 20:30:35,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 893. [2020-10-23 20:30:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-10-23 20:30:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1006 transitions. [2020-10-23 20:30:35,045 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1006 transitions. Word has length 199 [2020-10-23 20:30:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:35,046 INFO L481 AbstractCegarLoop]: Abstraction has 893 states and 1006 transitions. [2020-10-23 20:30:35,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-23 20:30:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1006 transitions. [2020-10-23 20:30:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-23 20:30:35,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:35,049 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] [2020-10-23 20:30:35,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:30:35,050 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:35,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2073561521, now seen corresponding path program 1 times [2020-10-23 20:30:35,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:35,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413158071] [2020-10-23 20:30:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:35,053 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-23 20:30:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:30:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:35,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413158071] [2020-10-23 20:30:35,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:35,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:30:35,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853310355] [2020-10-23 20:30:35,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:30:35,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:35,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:30:35,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:30:35,364 INFO L87 Difference]: Start difference. First operand 893 states and 1006 transitions. Second operand 13 states. [2020-10-23 20:30:38,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:38,893 INFO L93 Difference]: Finished difference Result 921 states and 1036 transitions. [2020-10-23 20:30:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:30:38,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 202 [2020-10-23 20:30:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:38,900 INFO L225 Difference]: With dead ends: 921 [2020-10-23 20:30:38,900 INFO L226 Difference]: Without dead ends: 806 [2020-10-23 20:30:38,901 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 [2020-10-23 20:30:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-10-23 20:30:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 797. [2020-10-23 20:30:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-10-23 20:30:39,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 900 transitions. [2020-10-23 20:30:39,068 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 900 transitions. Word has length 202 [2020-10-23 20:30:39,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:39,068 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 900 transitions. [2020-10-23 20:30:39,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:30:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 900 transitions. [2020-10-23 20:30:39,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-23 20:30:39,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:39,072 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] [2020-10-23 20:30:39,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:30:39,073 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:39,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1323247826, now seen corresponding path program 1 times [2020-10-23 20:30:39,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:39,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493451457] [2020-10-23 20:30:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:39,076 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:39,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:39,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:39,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-23 20:30:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:39,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:30:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 20:30:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:39,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493451457] [2020-10-23 20:30:39,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:39,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-23 20:30:39,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570808507] [2020-10-23 20:30:39,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-23 20:30:39,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:39,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-23 20:30:39,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:30:39,483 INFO L87 Difference]: Start difference. First operand 797 states and 900 transitions. Second operand 17 states. [2020-10-23 20:30:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:42,936 INFO L93 Difference]: Finished difference Result 825 states and 930 transitions. [2020-10-23 20:30:42,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:30:42,937 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 204 [2020-10-23 20:30:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:42,940 INFO L225 Difference]: With dead ends: 825 [2020-10-23 20:30:42,940 INFO L226 Difference]: Without dead ends: 767 [2020-10-23 20:30:42,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-23 20:30:42,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-10-23 20:30:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 758. [2020-10-23 20:30:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-10-23 20:30:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 855 transitions. [2020-10-23 20:30:43,078 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 855 transitions. Word has length 204 [2020-10-23 20:30:43,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:43,079 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 855 transitions. [2020-10-23 20:30:43,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-23 20:30:43,079 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 855 transitions. [2020-10-23 20:30:43,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 20:30:43,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:43,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:30:43,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 20:30:43,081 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:43,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:43,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1520766918, now seen corresponding path program 1 times [2020-10-23 20:30:43,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:43,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992201731] [2020-10-23 20:30:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:43,085 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:43,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:43,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:43,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-23 20:30:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:43,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992201731] [2020-10-23 20:30:43,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:43,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:30:43,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843731282] [2020-10-23 20:30:43,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:30:43,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:43,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:30:43,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:30:43,316 INFO L87 Difference]: Start difference. First operand 758 states and 855 transitions. Second operand 8 states. [2020-10-23 20:30:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:45,480 INFO L93 Difference]: Finished difference Result 815 states and 914 transitions. [2020-10-23 20:30:45,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:30:45,481 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2020-10-23 20:30:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:45,484 INFO L225 Difference]: With dead ends: 815 [2020-10-23 20:30:45,485 INFO L226 Difference]: Without dead ends: 706 [2020-10-23 20:30:45,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:30:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-23 20:30:45,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 677. [2020-10-23 20:30:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-10-23 20:30:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 757 transitions. [2020-10-23 20:30:45,611 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 757 transitions. Word has length 206 [2020-10-23 20:30:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:45,611 INFO L481 AbstractCegarLoop]: Abstraction has 677 states and 757 transitions. [2020-10-23 20:30:45,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:30:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 757 transitions. [2020-10-23 20:30:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-23 20:30:45,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:45,614 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] [2020-10-23 20:30:45,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-23 20:30:45,614 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:45,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:45,615 INFO L82 PathProgramCache]: Analyzing trace with hash 339105649, now seen corresponding path program 1 times [2020-10-23 20:30:45,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:45,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885041069] [2020-10-23 20:30:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:45,617 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:45,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:45,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 20:30:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-23 20:30:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:45,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885041069] [2020-10-23 20:30:45,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:45,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:30:45,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854200214] [2020-10-23 20:30:45,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:30:45,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:45,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:30:45,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:30:45,979 INFO L87 Difference]: Start difference. First operand 677 states and 757 transitions. Second operand 14 states. [2020-10-23 20:30:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:48,333 INFO L93 Difference]: Finished difference Result 717 states and 799 transitions. [2020-10-23 20:30:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:30:48,334 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 213 [2020-10-23 20:30:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:48,338 INFO L225 Difference]: With dead ends: 717 [2020-10-23 20:30:48,338 INFO L226 Difference]: Without dead ends: 670 [2020-10-23 20:30:48,339 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 [2020-10-23 20:30:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-23 20:30:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 661. [2020-10-23 20:30:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-10-23 20:30:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 738 transitions. [2020-10-23 20:30:48,461 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 738 transitions. Word has length 213 [2020-10-23 20:30:48,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:48,462 INFO L481 AbstractCegarLoop]: Abstraction has 661 states and 738 transitions. [2020-10-23 20:30:48,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:30:48,462 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 738 transitions. [2020-10-23 20:30:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:30:48,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:48,464 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] [2020-10-23 20:30:48,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-23 20:30:48,464 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:48,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:48,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1786334635, now seen corresponding path program 1 times [2020-10-23 20:30:48,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:48,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127090822] [2020-10-23 20:30:48,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:48,468 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 20:30:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 20:30:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:48,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127090822] [2020-10-23 20:30:48,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:48,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:30:48,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525426196] [2020-10-23 20:30:48,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:30:48,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:48,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:30:48,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:30:48,829 INFO L87 Difference]: Start difference. First operand 661 states and 738 transitions. Second operand 13 states. [2020-10-23 20:30:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:51,427 INFO L93 Difference]: Finished difference Result 913 states and 1021 transitions. [2020-10-23 20:30:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 20:30:51,428 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 214 [2020-10-23 20:30:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:51,432 INFO L225 Difference]: With dead ends: 913 [2020-10-23 20:30:51,433 INFO L226 Difference]: Without dead ends: 876 [2020-10-23 20:30:51,434 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 [2020-10-23 20:30:51,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-23 20:30:51,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 675. [2020-10-23 20:30:51,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-10-23 20:30:51,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 755 transitions. [2020-10-23 20:30:51,563 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 755 transitions. Word has length 214 [2020-10-23 20:30:51,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:51,563 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 755 transitions. [2020-10-23 20:30:51,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:30:51,564 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 755 transitions. [2020-10-23 20:30:51,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-23 20:30:51,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:51,566 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] [2020-10-23 20:30:51,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-23 20:30:51,566 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:51,567 INFO L82 PathProgramCache]: Analyzing trace with hash 718446748, now seen corresponding path program 1 times [2020-10-23 20:30:51,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:51,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644244449] [2020-10-23 20:30:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:51,570 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-23 20:30:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 20:30:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:51,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644244449] [2020-10-23 20:30:51,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:51,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:30:51,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131880628] [2020-10-23 20:30:51,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:30:51,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:51,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:30:51,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:30:51,891 INFO L87 Difference]: Start difference. First operand 675 states and 755 transitions. Second operand 14 states. [2020-10-23 20:30:54,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:54,206 INFO L93 Difference]: Finished difference Result 715 states and 797 transitions. [2020-10-23 20:30:54,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:30:54,207 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 214 [2020-10-23 20:30:54,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:54,212 INFO L225 Difference]: With dead ends: 715 [2020-10-23 20:30:54,212 INFO L226 Difference]: Without dead ends: 651 [2020-10-23 20:30:54,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-23 20:30:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-10-23 20:30:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 642. [2020-10-23 20:30:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-10-23 20:30:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 699 transitions. [2020-10-23 20:30:54,343 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 699 transitions. Word has length 214 [2020-10-23 20:30:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:54,344 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 699 transitions. [2020-10-23 20:30:54,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:30:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 699 transitions. [2020-10-23 20:30:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-23 20:30:54,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:54,347 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, 1] [2020-10-23 20:30:54,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-23 20:30:54,347 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:54,347 INFO L82 PathProgramCache]: Analyzing trace with hash 900164458, now seen corresponding path program 1 times [2020-10-23 20:30:54,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:54,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983296764] [2020-10-23 20:30:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:54,350 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:54,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:30:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 20:30:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:54,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-23 20:30:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:54,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-23 20:30:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:54,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-23 20:30:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:54,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-23 20:30:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:30:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:30:54,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983296764] [2020-10-23 20:30:54,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:30:54,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:30:54,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099900325] [2020-10-23 20:30:54,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:30:54,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:30:54,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:30:54,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:30:54,600 INFO L87 Difference]: Start difference. First operand 642 states and 699 transitions. Second operand 8 states. [2020-10-23 20:30:56,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:30:56,341 INFO L93 Difference]: Finished difference Result 766 states and 840 transitions. [2020-10-23 20:30:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:30:56,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-10-23 20:30:56,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:30:56,345 INFO L225 Difference]: With dead ends: 766 [2020-10-23 20:30:56,345 INFO L226 Difference]: Without dead ends: 669 [2020-10-23 20:30:56,346 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 [2020-10-23 20:30:56,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-10-23 20:30:56,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 638. [2020-10-23 20:30:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-10-23 20:30:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 692 transitions. [2020-10-23 20:30:56,473 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 692 transitions. Word has length 222 [2020-10-23 20:30:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:30:56,473 INFO L481 AbstractCegarLoop]: Abstraction has 638 states and 692 transitions. [2020-10-23 20:30:56,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:30:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 692 transitions. [2020-10-23 20:30:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-23 20:30:56,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:30:56,476 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] [2020-10-23 20:30:56,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-23 20:30:56,476 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:30:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:30:56,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1419090772, now seen corresponding path program 1 times [2020-10-23 20:30:56,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:30:56,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343078734] [2020-10-23 20:30:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:30:56,480 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:30:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:30:56,502 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:30:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:30:56,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:30:56,656 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:30:56,656 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:30:56,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-23 20:30:56,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:30:56 BoogieIcfgContainer [2020-10-23 20:30:56,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:30:56,692 INFO L168 Benchmark]: Toolchain (without parser) took 50499.77 ms. Allocated memory was 154.1 MB in the beginning and 625.0 MB in the end (delta: 470.8 MB). Free memory was 130.4 MB in the beginning and 369.5 MB in the end (delta: -239.0 MB). Peak memory consumption was 231.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:30:56,693 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:30:56,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.81 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 110.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:30:56,694 INFO L168 Benchmark]: Boogie Preprocessor took 113.15 ms. Allocated memory is still 154.1 MB. Free memory was 110.5 MB in the beginning and 107.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:30:56,695 INFO L168 Benchmark]: RCFGBuilder took 2062.60 ms. Allocated memory is still 154.1 MB. Free memory was 107.5 MB in the beginning and 119.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 56.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:30:56,695 INFO L168 Benchmark]: TraceAbstraction took 47813.79 ms. Allocated memory was 154.1 MB in the beginning and 625.0 MB in the end (delta: 470.8 MB). Free memory was 119.0 MB in the beginning and 369.5 MB in the end (delta: -250.5 MB). Peak memory consumption was 219.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:30:56,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 489.81 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 110.5 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 113.15 ms. Allocated memory is still 154.1 MB. Free memory was 110.5 MB in the beginning and 107.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2062.60 ms. Allocated memory is still 154.1 MB. Free memory was 107.5 MB in the beginning and 119.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 56.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 47813.79 ms. Allocated memory was 154.1 MB in the beginning and 625.0 MB in the end (delta: 470.8 MB). Free memory was 119.0 MB in the beginning and 369.5 MB in the end (delta: -250.5 MB). Peak memory consumption was 219.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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] CALL reach_error() [L3] __assert_fail("0", "kbfiltr_simpl2.cil-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 19 procedures, 679 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 47.7s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 38.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10408 SDtfs, 18599 SDslu, 18265 SDs, 0 SdLazy, 33115 SolverSat, 1392 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 375 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=905occurred 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: 2.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 584 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...