/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 0.2.0-7d8eed3 [2020-11-07 00:45:27,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:45:27,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:45:27,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:45:27,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:45:27,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:45:27,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:45:27,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:45:27,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:45:27,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:45:27,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:45:27,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:45:27,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:45:27,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:45:27,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:45:27,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:45:27,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:45:27,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:45:27,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:45:27,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:45:27,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:45:27,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:45:27,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:45:27,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:45:27,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:45:27,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:45:27,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:45:27,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:45:27,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:45:27,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:45:27,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:45:27,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:45:27,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:45:27,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:45:27,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:45:27,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:45:27,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:45:27,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:45:27,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:45:27,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:45:27,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:45:27,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:45:27,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:45:27,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:45:27,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:45:27,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:45:27,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:45:27,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:45:27,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:45:27,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:45:27,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:45:27,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:45:27,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:45:27,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:45:27,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:45:27,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:45:27,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:45:27,948 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:45:27,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:45:27,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:45:27,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:45:27,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:45:27,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:45:27,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:45:27,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:45:28,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:45:28,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:45:28,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:45:28,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:45:28,400 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:45:28,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-11-07 00:45:28,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc503d33/7f085fce1af84d6aa0f6acadccda66b9/FLAG8a22d99c9 [2020-11-07 00:45:29,242 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:45:29,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-11-07 00:45:29,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc503d33/7f085fce1af84d6aa0f6acadccda66b9/FLAG8a22d99c9 [2020-11-07 00:45:29,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc503d33/7f085fce1af84d6aa0f6acadccda66b9 [2020-11-07 00:45:29,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:45:29,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:45:29,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:45:29,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:45:29,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:45:29,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:29" (1/1) ... [2020-11-07 00:45:29,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104fb775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:29, skipping insertion in model container [2020-11-07 00:45:29,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:29" (1/1) ... [2020-11-07 00:45:29,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:45:29,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:45:30,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:45:30,091 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:45:30,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:45:30,211 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:45:30,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:30 WrapperNode [2020-11-07 00:45:30,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:45:30,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:45:30,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:45:30,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:45:30,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:30" (1/1) ... [2020-11-07 00:45:30,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:30" (1/1) ... [2020-11-07 00:45:30,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:30" (1/1) ... [2020-11-07 00:45:30,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:30" (1/1) ... [2020-11-07 00:45:30,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:30" (1/1) ... [2020-11-07 00:45:30,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:30" (1/1) ... [2020-11-07 00:45:30,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:30" (1/1) ... [2020-11-07 00:45:30,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:45:30,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:45:30,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:45:30,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:45:30,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:30" (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 [2020-11-07 00:45:30,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:45:30,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:45:30,424 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:45:30,424 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-11-07 00:45:30,424 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-11-07 00:45:30,424 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-11-07 00:45:30,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:45:30,424 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-11-07 00:45:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-11-07 00:45:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-11-07 00:45:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-11-07 00:45:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-11-07 00:45:30,425 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-11-07 00:45:30,426 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-11-07 00:45:30,426 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-11-07 00:45:30,426 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-11-07 00:45:30,426 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-11-07 00:45:30,426 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-11-07 00:45:30,426 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-11-07 00:45:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:45:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:45:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:45:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:45:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-07 00:45:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:45:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-11-07 00:45:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-11-07 00:45:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-11-07 00:45:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-11-07 00:45:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-11-07 00:45:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-11-07 00:45:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-11-07 00:45:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-11-07 00:45:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-11-07 00:45:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-11-07 00:45:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-11-07 00:45:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-11-07 00:45:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-11-07 00:45:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-11-07 00:45:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-11-07 00:45:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:45:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-11-07 00:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:45:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:45:30,849 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-07 00:45:31,028 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-11-07 00:45:31,029 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-11-07 00:45:31,036 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-07 00:45:31,093 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-11-07 00:45:31,094 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-11-07 00:45:31,239 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-07 00:45:31,265 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-11-07 00:45:31,265 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-11-07 00:45:31,275 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-07 00:45:31,438 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-11-07 00:45:31,438 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-11-07 00:45:31,447 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-07 00:45:31,484 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-11-07 00:45:31,484 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-11-07 00:45:31,492 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-07 00:45:31,527 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-11-07 00:45:31,528 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-11-07 00:45:31,596 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:45:31,596 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 00:45:31,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:31 BoogieIcfgContainer [2020-11-07 00:45:31,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:45:31,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:45:31,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:45:31,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:45:31,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:45:29" (1/3) ... [2020-11-07 00:45:31,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62eed319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:31, skipping insertion in model container [2020-11-07 00:45:31,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:30" (2/3) ... [2020-11-07 00:45:31,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62eed319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:31, skipping insertion in model container [2020-11-07 00:45:31,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:31" (3/3) ... [2020-11-07 00:45:31,609 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-11-07 00:45:31,623 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:45:31,627 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:45:31,641 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:45:31,667 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:45:31,668 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:45:31,668 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:45:31,668 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:45:31,668 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:45:31,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:45:31,669 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:45:31,669 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:45:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states. [2020-11-07 00:45:31,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-07 00:45:31,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:31,716 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] [2020-11-07 00:45:31,717 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:31,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:31,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1780206384, now seen corresponding path program 1 times [2020-11-07 00:45:31,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:31,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521591024] [2020-11-07 00:45:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:31,823 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:32,263 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 00:45:32,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:32,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:45:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:32,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521591024] [2020-11-07 00:45:32,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:32,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 00:45:32,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684013997] [2020-11-07 00:45:32,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 00:45:32,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:32,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 00:45:32,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:45:32,496 INFO L87 Difference]: Start difference. First operand 679 states. Second operand 5 states. [2020-11-07 00:45:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:35,073 INFO L93 Difference]: Finished difference Result 1049 states and 1261 transitions. [2020-11-07 00:45:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 00:45:35,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-11-07 00:45:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:35,098 INFO L225 Difference]: With dead ends: 1049 [2020-11-07 00:45:35,099 INFO L226 Difference]: Without dead ends: 718 [2020-11-07 00:45:35,109 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 [2020-11-07 00:45:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-11-07 00:45:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 664. [2020-11-07 00:45:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-11-07 00:45:35,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 759 transitions. [2020-11-07 00:45:35,334 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 759 transitions. Word has length 94 [2020-11-07 00:45:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:35,335 INFO L481 AbstractCegarLoop]: Abstraction has 664 states and 759 transitions. [2020-11-07 00:45:35,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 00:45:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 759 transitions. [2020-11-07 00:45:35,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-11-07 00:45:35,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:35,341 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] [2020-11-07 00:45:35,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:45:35,342 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:35,343 INFO L82 PathProgramCache]: Analyzing trace with hash 703865915, now seen corresponding path program 1 times [2020-11-07 00:45:35,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:35,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236703163] [2020-11-07 00:45:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:35,348 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:35,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:45:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:35,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:45:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:35,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236703163] [2020-11-07 00:45:35,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:35,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:45:35,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345816206] [2020-11-07 00:45:35,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:45:35,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:35,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:45:35,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:45:35,751 INFO L87 Difference]: Start difference. First operand 664 states and 759 transitions. Second operand 6 states. [2020-11-07 00:45:36,157 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 00:45:38,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:38,530 INFO L93 Difference]: Finished difference Result 987 states and 1142 transitions. [2020-11-07 00:45:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 00:45:38,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-11-07 00:45:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:38,549 INFO L225 Difference]: With dead ends: 987 [2020-11-07 00:45:38,549 INFO L226 Difference]: Without dead ends: 895 [2020-11-07 00:45:38,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:45:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-11-07 00:45:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 815. [2020-11-07 00:45:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-11-07 00:45:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 926 transitions. [2020-11-07 00:45:38,727 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 926 transitions. Word has length 145 [2020-11-07 00:45:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:38,731 INFO L481 AbstractCegarLoop]: Abstraction has 815 states and 926 transitions. [2020-11-07 00:45:38,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:45:38,731 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 926 transitions. [2020-11-07 00:45:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-11-07 00:45:38,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:38,746 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] [2020-11-07 00:45:38,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:45:38,748 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:38,749 INFO L82 PathProgramCache]: Analyzing trace with hash -43861484, now seen corresponding path program 1 times [2020-11-07 00:45:38,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:38,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748178127] [2020-11-07 00:45:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:38,753 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:38,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:45:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:45:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:39,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748178127] [2020-11-07 00:45:39,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:39,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:45:39,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787986359] [2020-11-07 00:45:39,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:45:39,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:39,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:45:39,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:45:39,158 INFO L87 Difference]: Start difference. First operand 815 states and 926 transitions. Second operand 6 states. [2020-11-07 00:45:39,328 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 00:45:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:40,471 INFO L93 Difference]: Finished difference Result 1144 states and 1304 transitions. [2020-11-07 00:45:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 00:45:40,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-11-07 00:45:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:40,478 INFO L225 Difference]: With dead ends: 1144 [2020-11-07 00:45:40,478 INFO L226 Difference]: Without dead ends: 917 [2020-11-07 00:45:40,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:45:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-11-07 00:45:40,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 890. [2020-11-07 00:45:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-11-07 00:45:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1012 transitions. [2020-11-07 00:45:40,618 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1012 transitions. Word has length 167 [2020-11-07 00:45:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:40,619 INFO L481 AbstractCegarLoop]: Abstraction has 890 states and 1012 transitions. [2020-11-07 00:45:40,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:45:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1012 transitions. [2020-11-07 00:45:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-07 00:45:40,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:40,623 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] [2020-11-07 00:45:40,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:45:40,623 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:40,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:40,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1343784413, now seen corresponding path program 1 times [2020-11-07 00:45:40,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:40,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512190452] [2020-11-07 00:45:40,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:40,627 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:40,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:45:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:40,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:45:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:40,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512190452] [2020-11-07 00:45:40,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:40,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:45:40,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782176786] [2020-11-07 00:45:40,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:45:40,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:40,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:45:40,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:45:40,903 INFO L87 Difference]: Start difference. First operand 890 states and 1012 transitions. Second operand 6 states. [2020-11-07 00:45:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:43,324 INFO L93 Difference]: Finished difference Result 895 states and 1016 transitions. [2020-11-07 00:45:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 00:45:43,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-11-07 00:45:43,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:43,349 INFO L225 Difference]: With dead ends: 895 [2020-11-07 00:45:43,349 INFO L226 Difference]: Without dead ends: 890 [2020-11-07 00:45:43,350 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 [2020-11-07 00:45:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-11-07 00:45:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 889. [2020-11-07 00:45:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-11-07 00:45:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1009 transitions. [2020-11-07 00:45:43,517 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1009 transitions. Word has length 171 [2020-11-07 00:45:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:43,517 INFO L481 AbstractCegarLoop]: Abstraction has 889 states and 1009 transitions. [2020-11-07 00:45:43,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:45:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1009 transitions. [2020-11-07 00:45:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-11-07 00:45:43,521 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:43,522 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] [2020-11-07 00:45:43,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:45:43,522 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:43,523 INFO L82 PathProgramCache]: Analyzing trace with hash -111534163, now seen corresponding path program 1 times [2020-11-07 00:45:43,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:43,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771505866] [2020-11-07 00:45:43,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:43,526 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:43,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:45:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:43,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:45:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:43,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 00:45:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:43,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 00:45:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:43,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-07 00:45:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:44,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771505866] [2020-11-07 00:45:44,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:44,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 00:45:44,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555589944] [2020-11-07 00:45:44,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 00:45:44,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:44,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 00:45:44,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-11-07 00:45:44,101 INFO L87 Difference]: Start difference. First operand 889 states and 1009 transitions. Second operand 14 states. [2020-11-07 00:45:44,704 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 00:45:45,676 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 00:45:48,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:48,506 INFO L93 Difference]: Finished difference Result 1009 states and 1140 transitions. [2020-11-07 00:45:48,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 00:45:48,507 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 196 [2020-11-07 00:45:48,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:48,512 INFO L225 Difference]: With dead ends: 1009 [2020-11-07 00:45:48,513 INFO L226 Difference]: Without dead ends: 930 [2020-11-07 00:45:48,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-11-07 00:45:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-11-07 00:45:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 894. [2020-11-07 00:45:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-11-07 00:45:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1010 transitions. [2020-11-07 00:45:48,651 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1010 transitions. Word has length 196 [2020-11-07 00:45:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:48,652 INFO L481 AbstractCegarLoop]: Abstraction has 894 states and 1010 transitions. [2020-11-07 00:45:48,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 00:45:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1010 transitions. [2020-11-07 00:45:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-11-07 00:45:48,656 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:48,656 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] [2020-11-07 00:45:48,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:45:48,657 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:48,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:48,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1038055060, now seen corresponding path program 1 times [2020-11-07 00:45:48,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:48,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378696122] [2020-11-07 00:45:48,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:48,661 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:48,816 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 00:45:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:48,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:45:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:45:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 00:45:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 00:45:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:49,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-07 00:45:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:49,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:49,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378696122] [2020-11-07 00:45:49,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:49,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 00:45:49,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358129963] [2020-11-07 00:45:49,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 00:45:49,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:49,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 00:45:49,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:45:49,079 INFO L87 Difference]: Start difference. First operand 894 states and 1010 transitions. Second operand 8 states. [2020-11-07 00:45:51,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:51,254 INFO L93 Difference]: Finished difference Result 1081 states and 1232 transitions. [2020-11-07 00:45:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 00:45:51,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-11-07 00:45:51,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:51,263 INFO L225 Difference]: With dead ends: 1081 [2020-11-07 00:45:51,263 INFO L226 Difference]: Without dead ends: 941 [2020-11-07 00:45:51,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-11-07 00:45:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2020-11-07 00:45:51,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 900. [2020-11-07 00:45:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-11-07 00:45:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1019 transitions. [2020-11-07 00:45:51,414 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1019 transitions. Word has length 198 [2020-11-07 00:45:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:51,415 INFO L481 AbstractCegarLoop]: Abstraction has 900 states and 1019 transitions. [2020-11-07 00:45:51,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 00:45:51,415 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1019 transitions. [2020-11-07 00:45:51,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-11-07 00:45:51,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:51,420 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] [2020-11-07 00:45:51,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:45:51,421 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:51,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash 963958808, now seen corresponding path program 1 times [2020-11-07 00:45:51,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:51,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900541914] [2020-11-07 00:45:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:51,425 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:45:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:45:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 00:45:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 00:45:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-07 00:45:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:51,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900541914] [2020-11-07 00:45:51,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:51,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 00:45:51,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462635403] [2020-11-07 00:45:51,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 00:45:51,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:51,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 00:45:51,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-11-07 00:45:51,898 INFO L87 Difference]: Start difference. First operand 900 states and 1019 transitions. Second operand 13 states. [2020-11-07 00:45:52,489 WARN L194 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-11-07 00:45:52,717 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-11-07 00:45:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:54,100 INFO L93 Difference]: Finished difference Result 944 states and 1068 transitions. [2020-11-07 00:45:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 00:45:54,101 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 198 [2020-11-07 00:45:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:54,107 INFO L225 Difference]: With dead ends: 944 [2020-11-07 00:45:54,107 INFO L226 Difference]: Without dead ends: 935 [2020-11-07 00:45:54,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-11-07 00:45:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-11-07 00:45:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 905. [2020-11-07 00:45:54,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-11-07 00:45:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1025 transitions. [2020-11-07 00:45:54,303 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1025 transitions. Word has length 198 [2020-11-07 00:45:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:54,304 INFO L481 AbstractCegarLoop]: Abstraction has 905 states and 1025 transitions. [2020-11-07 00:45:54,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 00:45:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1025 transitions. [2020-11-07 00:45:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-11-07 00:45:54,308 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:54,308 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] [2020-11-07 00:45:54,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 00:45:54,308 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:54,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1830643308, now seen corresponding path program 1 times [2020-11-07 00:45:54,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:54,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065559071] [2020-11-07 00:45:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:54,312 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:45:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:45:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 00:45:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 00:45:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-07 00:45:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:54,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065559071] [2020-11-07 00:45:54,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:54,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 00:45:54,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264324718] [2020-11-07 00:45:54,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 00:45:54,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:54,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 00:45:54,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:45:54,633 INFO L87 Difference]: Start difference. First operand 905 states and 1025 transitions. Second operand 8 states. [2020-11-07 00:45:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:45:56,822 INFO L93 Difference]: Finished difference Result 930 states and 1054 transitions. [2020-11-07 00:45:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 00:45:56,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-11-07 00:45:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:45:56,828 INFO L225 Difference]: With dead ends: 930 [2020-11-07 00:45:56,828 INFO L226 Difference]: Without dead ends: 909 [2020-11-07 00:45:56,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-11-07 00:45:56,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-11-07 00:45:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 900. [2020-11-07 00:45:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-11-07 00:45:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1016 transitions. [2020-11-07 00:45:56,995 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1016 transitions. Word has length 198 [2020-11-07 00:45:56,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:45:56,996 INFO L481 AbstractCegarLoop]: Abstraction has 900 states and 1016 transitions. [2020-11-07 00:45:56,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 00:45:56,996 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1016 transitions. [2020-11-07 00:45:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-11-07 00:45:57,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:45:57,000 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] [2020-11-07 00:45:57,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 00:45:57,001 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:45:57,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:45:57,001 INFO L82 PathProgramCache]: Analyzing trace with hash -669509211, now seen corresponding path program 1 times [2020-11-07 00:45:57,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:45:57,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769074374] [2020-11-07 00:45:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:45:57,005 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:45:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:57,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:45:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:45:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:57,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:45:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:57,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 00:45:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 00:45:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:57,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-07 00:45:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:45:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:45:57,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769074374] [2020-11-07 00:45:57,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:45:57,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-11-07 00:45:57,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233698004] [2020-11-07 00:45:57,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 00:45:57,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:45:57,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 00:45:57,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-11-07 00:45:57,524 INFO L87 Difference]: Start difference. First operand 900 states and 1016 transitions. Second operand 17 states. [2020-11-07 00:46:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:02,054 INFO L93 Difference]: Finished difference Result 928 states and 1046 transitions. [2020-11-07 00:46:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-07 00:46:02,055 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 199 [2020-11-07 00:46:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:02,060 INFO L225 Difference]: With dead ends: 928 [2020-11-07 00:46:02,060 INFO L226 Difference]: Without dead ends: 902 [2020-11-07 00:46:02,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-11-07 00:46:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-11-07 00:46:02,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 893. [2020-11-07 00:46:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-11-07 00:46:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1006 transitions. [2020-11-07 00:46:02,224 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1006 transitions. Word has length 199 [2020-11-07 00:46:02,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:02,224 INFO L481 AbstractCegarLoop]: Abstraction has 893 states and 1006 transitions. [2020-11-07 00:46:02,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 00:46:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1006 transitions. [2020-11-07 00:46:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-11-07 00:46:02,228 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:02,228 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] [2020-11-07 00:46:02,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 00:46:02,229 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:02,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:02,229 INFO L82 PathProgramCache]: Analyzing trace with hash 2073561521, now seen corresponding path program 1 times [2020-11-07 00:46:02,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:02,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600273222] [2020-11-07 00:46:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:02,232 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:02,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:02,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:46:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:02,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:46:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-11-07 00:46:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 00:46:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:02,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600273222] [2020-11-07 00:46:02,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:02,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 00:46:02,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803632962] [2020-11-07 00:46:02,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 00:46:02,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:02,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 00:46:02,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-11-07 00:46:02,595 INFO L87 Difference]: Start difference. First operand 893 states and 1006 transitions. Second operand 13 states. [2020-11-07 00:46:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:06,919 INFO L93 Difference]: Finished difference Result 921 states and 1036 transitions. [2020-11-07 00:46:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 00:46:06,920 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 202 [2020-11-07 00:46:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:06,926 INFO L225 Difference]: With dead ends: 921 [2020-11-07 00:46:06,926 INFO L226 Difference]: Without dead ends: 806 [2020-11-07 00:46:06,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-11-07 00:46:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-11-07 00:46:07,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 797. [2020-11-07 00:46:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-11-07 00:46:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 900 transitions. [2020-11-07 00:46:07,085 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 900 transitions. Word has length 202 [2020-11-07 00:46:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:07,085 INFO L481 AbstractCegarLoop]: Abstraction has 797 states and 900 transitions. [2020-11-07 00:46:07,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 00:46:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 900 transitions. [2020-11-07 00:46:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-11-07 00:46:07,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:07,089 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] [2020-11-07 00:46:07,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 00:46:07,089 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:07,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1323247826, now seen corresponding path program 1 times [2020-11-07 00:46:07,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:07,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328656352] [2020-11-07 00:46:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:07,093 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:07,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:07,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:46:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:07,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:46:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-11-07 00:46:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:07,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 00:46:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-07 00:46:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:07,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:07,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328656352] [2020-11-07 00:46:07,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:07,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-11-07 00:46:07,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183272319] [2020-11-07 00:46:07,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 00:46:07,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:07,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 00:46:07,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-11-07 00:46:07,549 INFO L87 Difference]: Start difference. First operand 797 states and 900 transitions. Second operand 17 states. [2020-11-07 00:46:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:11,805 INFO L93 Difference]: Finished difference Result 825 states and 930 transitions. [2020-11-07 00:46:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-07 00:46:11,805 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 204 [2020-11-07 00:46:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:11,810 INFO L225 Difference]: With dead ends: 825 [2020-11-07 00:46:11,811 INFO L226 Difference]: Without dead ends: 767 [2020-11-07 00:46:11,812 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 [2020-11-07 00:46:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-11-07 00:46:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 758. [2020-11-07 00:46:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-11-07 00:46:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 855 transitions. [2020-11-07 00:46:11,948 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 855 transitions. Word has length 204 [2020-11-07 00:46:11,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:11,948 INFO L481 AbstractCegarLoop]: Abstraction has 758 states and 855 transitions. [2020-11-07 00:46:11,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 00:46:11,949 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 855 transitions. [2020-11-07 00:46:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-11-07 00:46:11,952 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:11,952 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] [2020-11-07 00:46:11,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 00:46:11,952 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:11,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1520766918, now seen corresponding path program 1 times [2020-11-07 00:46:11,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:11,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355769479] [2020-11-07 00:46:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:11,956 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:46:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:46:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-11-07 00:46:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:12,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355769479] [2020-11-07 00:46:12,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:12,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 00:46:12,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016784468] [2020-11-07 00:46:12,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 00:46:12,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:12,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 00:46:12,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:46:12,242 INFO L87 Difference]: Start difference. First operand 758 states and 855 transitions. Second operand 8 states. [2020-11-07 00:46:13,407 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 00:46:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:14,988 INFO L93 Difference]: Finished difference Result 815 states and 914 transitions. [2020-11-07 00:46:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 00:46:14,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2020-11-07 00:46:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:14,991 INFO L225 Difference]: With dead ends: 815 [2020-11-07 00:46:14,991 INFO L226 Difference]: Without dead ends: 706 [2020-11-07 00:46:14,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-11-07 00:46:15,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-11-07 00:46:15,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 677. [2020-11-07 00:46:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-11-07 00:46:15,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 757 transitions. [2020-11-07 00:46:15,134 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 757 transitions. Word has length 206 [2020-11-07 00:46:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:15,135 INFO L481 AbstractCegarLoop]: Abstraction has 677 states and 757 transitions. [2020-11-07 00:46:15,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 00:46:15,135 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 757 transitions. [2020-11-07 00:46:15,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-11-07 00:46:15,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:15,137 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] [2020-11-07 00:46:15,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 00:46:15,138 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:15,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:15,138 INFO L82 PathProgramCache]: Analyzing trace with hash 339105649, now seen corresponding path program 1 times [2020-11-07 00:46:15,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:15,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176276791] [2020-11-07 00:46:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:15,141 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:46:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:46:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 00:46:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-11-07 00:46:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:15,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176276791] [2020-11-07 00:46:15,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:15,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 00:46:15,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260563701] [2020-11-07 00:46:15,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 00:46:15,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:15,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 00:46:15,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-11-07 00:46:15,530 INFO L87 Difference]: Start difference. First operand 677 states and 757 transitions. Second operand 14 states. [2020-11-07 00:46:18,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:18,446 INFO L93 Difference]: Finished difference Result 717 states and 799 transitions. [2020-11-07 00:46:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 00:46:18,448 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 213 [2020-11-07 00:46:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:18,451 INFO L225 Difference]: With dead ends: 717 [2020-11-07 00:46:18,451 INFO L226 Difference]: Without dead ends: 670 [2020-11-07 00:46:18,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-11-07 00:46:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-11-07 00:46:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 661. [2020-11-07 00:46:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-11-07 00:46:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 738 transitions. [2020-11-07 00:46:18,584 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 738 transitions. Word has length 213 [2020-11-07 00:46:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:18,585 INFO L481 AbstractCegarLoop]: Abstraction has 661 states and 738 transitions. [2020-11-07 00:46:18,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 00:46:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 738 transitions. [2020-11-07 00:46:18,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-11-07 00:46:18,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:18,587 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] [2020-11-07 00:46:18,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 00:46:18,588 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:18,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:18,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1786334635, now seen corresponding path program 1 times [2020-11-07 00:46:18,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:18,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110920654] [2020-11-07 00:46:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:18,591 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:18,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:46:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:18,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:46:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:18,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 00:46:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:18,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 00:46:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:18,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110920654] [2020-11-07 00:46:18,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:18,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 00:46:18,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681747841] [2020-11-07 00:46:18,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 00:46:18,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:18,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 00:46:18,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-11-07 00:46:18,992 INFO L87 Difference]: Start difference. First operand 661 states and 738 transitions. Second operand 13 states. [2020-11-07 00:46:20,008 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 00:46:20,792 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 00:46:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:22,202 INFO L93 Difference]: Finished difference Result 913 states and 1021 transitions. [2020-11-07 00:46:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 00:46:22,203 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 214 [2020-11-07 00:46:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:22,209 INFO L225 Difference]: With dead ends: 913 [2020-11-07 00:46:22,209 INFO L226 Difference]: Without dead ends: 876 [2020-11-07 00:46:22,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-11-07 00:46:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-11-07 00:46:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 675. [2020-11-07 00:46:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-11-07 00:46:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 755 transitions. [2020-11-07 00:46:22,339 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 755 transitions. Word has length 214 [2020-11-07 00:46:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:22,340 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 755 transitions. [2020-11-07 00:46:22,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 00:46:22,340 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 755 transitions. [2020-11-07 00:46:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-11-07 00:46:22,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:22,342 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] [2020-11-07 00:46:22,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 00:46:22,343 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:22,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:22,343 INFO L82 PathProgramCache]: Analyzing trace with hash 718446748, now seen corresponding path program 1 times [2020-11-07 00:46:22,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:22,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891534707] [2020-11-07 00:46:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:22,346 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:22,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:46:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:22,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:46:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:22,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 00:46:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:22,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 00:46:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:22,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891534707] [2020-11-07 00:46:22,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:22,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 00:46:22,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906930004] [2020-11-07 00:46:22,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 00:46:22,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:22,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 00:46:22,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-11-07 00:46:22,770 INFO L87 Difference]: Start difference. First operand 675 states and 755 transitions. Second operand 14 states. [2020-11-07 00:46:25,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:25,613 INFO L93 Difference]: Finished difference Result 715 states and 797 transitions. [2020-11-07 00:46:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 00:46:25,613 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 214 [2020-11-07 00:46:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:25,617 INFO L225 Difference]: With dead ends: 715 [2020-11-07 00:46:25,617 INFO L226 Difference]: Without dead ends: 651 [2020-11-07 00:46:25,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-11-07 00:46:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-11-07 00:46:25,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 642. [2020-11-07 00:46:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-07 00:46:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 699 transitions. [2020-11-07 00:46:25,747 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 699 transitions. Word has length 214 [2020-11-07 00:46:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:25,748 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 699 transitions. [2020-11-07 00:46:25,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 00:46:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 699 transitions. [2020-11-07 00:46:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-07 00:46:25,750 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:25,751 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] [2020-11-07 00:46:25,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 00:46:25,751 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:25,752 INFO L82 PathProgramCache]: Analyzing trace with hash 900164458, now seen corresponding path program 1 times [2020-11-07 00:46:25,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:25,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309620346] [2020-11-07 00:46:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:25,755 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:25,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:46:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 00:46:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:25,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 00:46:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-11-07 00:46:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:25,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-07 00:46:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-11-07 00:46:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:46:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:46:26,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309620346] [2020-11-07 00:46:26,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:46:26,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 00:46:26,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972787099] [2020-11-07 00:46:26,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 00:46:26,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:46:26,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 00:46:26,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:46:26,059 INFO L87 Difference]: Start difference. First operand 642 states and 699 transitions. Second operand 8 states. [2020-11-07 00:46:28,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:46:28,139 INFO L93 Difference]: Finished difference Result 766 states and 840 transitions. [2020-11-07 00:46:28,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 00:46:28,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-11-07 00:46:28,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:46:28,143 INFO L225 Difference]: With dead ends: 766 [2020-11-07 00:46:28,143 INFO L226 Difference]: Without dead ends: 669 [2020-11-07 00:46:28,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-11-07 00:46:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-11-07 00:46:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 638. [2020-11-07 00:46:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-11-07 00:46:28,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 692 transitions. [2020-11-07 00:46:28,270 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 692 transitions. Word has length 222 [2020-11-07 00:46:28,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:46:28,271 INFO L481 AbstractCegarLoop]: Abstraction has 638 states and 692 transitions. [2020-11-07 00:46:28,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 00:46:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 692 transitions. [2020-11-07 00:46:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-11-07 00:46:28,273 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:46:28,273 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] [2020-11-07 00:46:28,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 00:46:28,273 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:46:28,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:46:28,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1419090772, now seen corresponding path program 1 times [2020-11-07 00:46:28,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:46:28,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089888149] [2020-11-07 00:46:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:46:28,277 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:46:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:46:28,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:46:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:46:28,327 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:46:28,466 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:46:28,466 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:46:28,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 00:46:28,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:46:28 BoogieIcfgContainer [2020-11-07 00:46:28,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:46:28,504 INFO L168 Benchmark]: Toolchain (without parser) took 58932.03 ms. Allocated memory was 157.3 MB in the beginning and 565.2 MB in the end (delta: 407.9 MB). Free memory was 133.8 MB in the beginning and 284.0 MB in the end (delta: -150.2 MB). Peak memory consumption was 259.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:46:28,504 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 132.9 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:46:28,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.34 ms. Allocated memory is still 157.3 MB. Free memory was 133.2 MB in the beginning and 114.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:46:28,505 INFO L168 Benchmark]: Boogie Preprocessor took 106.39 ms. Allocated memory is still 157.3 MB. Free memory was 114.5 MB in the beginning and 111.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:46:28,506 INFO L168 Benchmark]: RCFGBuilder took 1278.61 ms. Allocated memory is still 157.3 MB. Free memory was 111.5 MB in the beginning and 100.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:46:28,507 INFO L168 Benchmark]: TraceAbstraction took 56900.63 ms. Allocated memory was 157.3 MB in the beginning and 565.2 MB in the end (delta: 407.9 MB). Free memory was 100.5 MB in the beginning and 284.0 MB in the end (delta: -183.5 MB). Peak memory consumption was 224.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:46:28,509 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 132.9 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 627.34 ms. Allocated memory is still 157.3 MB. Free memory was 133.2 MB in the beginning and 114.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 106.39 ms. Allocated memory is still 157.3 MB. Free memory was 114.5 MB in the beginning and 111.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1278.61 ms. Allocated memory is still 157.3 MB. Free memory was 111.5 MB in the beginning and 100.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 56900.63 ms. Allocated memory was 157.3 MB in the beginning and 565.2 MB in the end (delta: 407.9 MB). Free memory was 100.5 MB in the beginning and 284.0 MB in the end (delta: -183.5 MB). Peak memory consumption was 224.4 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: 56.8s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 47.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10409 SDtfs, 18607 SDslu, 18261 SDs, 0 SdLazy, 33128 SolverSat, 1394 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 375 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 7.7s 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: 2.4s 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...