/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 18:43:23,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 18:43:23,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 18:43:23,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 18:43:23,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 18:43:23,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 18:43:23,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 18:43:23,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 18:43:23,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 18:43:23,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 18:43:23,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 18:43:23,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 18:43:23,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 18:43:23,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 18:43:23,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 18:43:23,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 18:43:23,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 18:43:23,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 18:43:23,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 18:43:23,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 18:43:23,605 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 18:43:23,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 18:43:23,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 18:43:23,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 18:43:23,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 18:43:23,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-17 18:43:23,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-17 18:43:23,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-17 18:43:23,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-17 18:43:23,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-17 18:43:23,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-17 18:43:23,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-17 18:43:23,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-17 18:43:23,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-17 18:43:23,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-17 18:43:23,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-17 18:43:23,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-17 18:43:23,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-17 18:43:23,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-17 18:43:23,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 18:43:23,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 18:43:23,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 18:43:23,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 18:43:23,621 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 18:43:23,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 18:43:23,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 18:43:23,622 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 18:43:23,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 18:43:23,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 18:43:23,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 18:43:23,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 18:43:23,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 18:43:23,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 18:43:23,623 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 18:43:23,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 18:43:23,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 18:43:23,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 18:43:23,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 18:43:23,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 18:43:23,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 18:43:23,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 18:43:23,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 18:43:23,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 18:43:23,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 18:43:23,624 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 18:43:23,624 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 18:43:23,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 18:43:23,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 18:43:23,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 18:43:23,801 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 18:43:23,801 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 18:43:23,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2022-03-17 18:43:23,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a4031cd/8cca9dc78edc4835bce6b52a33f0b40b/FLAGf03ebf16d [2022-03-17 18:43:24,227 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 18:43:24,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2022-03-17 18:43:24,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a4031cd/8cca9dc78edc4835bce6b52a33f0b40b/FLAGf03ebf16d [2022-03-17 18:43:24,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6a4031cd/8cca9dc78edc4835bce6b52a33f0b40b [2022-03-17 18:43:24,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 18:43:24,252 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 18:43:24,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 18:43:24,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 18:43:24,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 18:43:24,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:43:24" (1/1) ... [2022-03-17 18:43:24,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f4f0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24, skipping insertion in model container [2022-03-17 18:43:24,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:43:24" (1/1) ... [2022-03-17 18:43:24,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 18:43:24,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 18:43:24,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c[29620,29633] [2022-03-17 18:43:24,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 18:43:24,520 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 18:43:24,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c[29620,29633] [2022-03-17 18:43:24,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 18:43:24,572 INFO L208 MainTranslator]: Completed translation [2022-03-17 18:43:24,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24 WrapperNode [2022-03-17 18:43:24,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 18:43:24,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 18:43:24,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 18:43:24,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 18:43:24,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24" (1/1) ... [2022-03-17 18:43:24,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24" (1/1) ... [2022-03-17 18:43:24,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24" (1/1) ... [2022-03-17 18:43:24,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24" (1/1) ... [2022-03-17 18:43:24,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24" (1/1) ... [2022-03-17 18:43:24,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24" (1/1) ... [2022-03-17 18:43:24,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24" (1/1) ... [2022-03-17 18:43:24,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 18:43:24,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 18:43:24,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 18:43:24,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 18:43:24,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24" (1/1) ... [2022-03-17 18:43:24,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 18:43:24,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:43:24,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 18:43:24,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 18:43:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 18:43:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 18:43:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 18:43:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-17 18:43:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-17 18:43:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-17 18:43:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 18:43:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-17 18:43:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-17 18:43:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-17 18:43:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-17 18:43:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-17 18:43:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-17 18:43:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-03-17 18:43:24,677 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-03-17 18:43:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-03-17 18:43:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-17 18:43:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-03-17 18:43:24,678 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-17 18:43:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-03-17 18:43:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 18:43:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 18:43:24,792 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 18:43:24,793 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 18:43:24,870 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:43:24,929 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-17 18:43:24,930 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-17 18:43:24,933 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:43:24,953 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-17 18:43:24,953 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-17 18:43:24,997 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:43:25,007 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-17 18:43:25,007 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-17 18:43:25,011 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:43:25,065 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-17 18:43:25,065 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-17 18:43:25,068 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:43:25,080 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-17 18:43:25,080 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-17 18:43:25,083 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:43:25,098 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-17 18:43:25,099 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-17 18:43:25,115 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 18:43:25,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 18:43:25,121 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-17 18:43:25,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:43:25 BoogieIcfgContainer [2022-03-17 18:43:25,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 18:43:25,123 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 18:43:25,123 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 18:43:25,124 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 18:43:25,126 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:43:25" (1/1) ... [2022-03-17 18:43:25,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 06:43:25 BasicIcfg [2022-03-17 18:43:25,168 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 18:43:25,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 18:43:25,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 18:43:25,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 18:43:25,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:43:24" (1/4) ... [2022-03-17 18:43:25,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719dfb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:43:25, skipping insertion in model container [2022-03-17 18:43:25,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:43:24" (2/4) ... [2022-03-17 18:43:25,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719dfb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:43:25, skipping insertion in model container [2022-03-17 18:43:25,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:43:25" (3/4) ... [2022-03-17 18:43:25,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719dfb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:43:25, skipping insertion in model container [2022-03-17 18:43:25,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 06:43:25" (4/4) ... [2022-03-17 18:43:25,175 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.cJordan [2022-03-17 18:43:25,179 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 18:43:25,179 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 18:43:25,212 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 18:43:25,216 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 18:43:25,216 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 18:43:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 199 states have internal predecessors, (284), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-03-17 18:43:25,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-17 18:43:25,250 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:25,251 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:25,251 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:25,255 INFO L85 PathProgramCache]: Analyzing trace with hash 685042341, now seen corresponding path program 1 times [2022-03-17 18:43:25,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:25,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901901905] [2022-03-17 18:43:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:25,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:25,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:25,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901901905] [2022-03-17 18:43:25,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901901905] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:25,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:25,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 18:43:25,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19340297] [2022-03-17 18:43:25,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:25,531 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 18:43:25,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:25,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 18:43:25,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:43:25,553 INFO L87 Difference]: Start difference. First operand has 239 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 199 states have internal predecessors, (284), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 18:43:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:26,189 INFO L93 Difference]: Finished difference Result 267 states and 384 transitions. [2022-03-17 18:43:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 18:43:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-03-17 18:43:26,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:26,204 INFO L225 Difference]: With dead ends: 267 [2022-03-17 18:43:26,204 INFO L226 Difference]: Without dead ends: 256 [2022-03-17 18:43:26,205 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:43:26,211 INFO L912 BasicCegarLoop]: 296 mSDtfsCounter, 173 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:26,211 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 446 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:43:26,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-17 18:43:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 228. [2022-03-17 18:43:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 174 states have (on average 1.4942528735632183) internal successors, (260), 189 states have internal predecessors, (260), 38 states have call successors, (38), 17 states have call predecessors, (38), 15 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-17 18:43:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 322 transitions. [2022-03-17 18:43:26,246 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 322 transitions. Word has length 20 [2022-03-17 18:43:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:26,246 INFO L478 AbstractCegarLoop]: Abstraction has 228 states and 322 transitions. [2022-03-17 18:43:26,246 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 18:43:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 322 transitions. [2022-03-17 18:43:26,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-17 18:43:26,247 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:26,247 INFO L500 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] [2022-03-17 18:43:26,248 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 18:43:26,248 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:26,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:26,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1276904425, now seen corresponding path program 1 times [2022-03-17 18:43:26,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:26,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672563544] [2022-03-17 18:43:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:26,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:26,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:26,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:26,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:26,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672563544] [2022-03-17 18:43:26,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672563544] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:26,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:26,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 18:43:26,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094392665] [2022-03-17 18:43:26,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:26,412 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:43:26,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:26,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:43:26,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:43:26,414 INFO L87 Difference]: Start difference. First operand 228 states and 322 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:43:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:26,850 INFO L93 Difference]: Finished difference Result 344 states and 470 transitions. [2022-03-17 18:43:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 18:43:26,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-03-17 18:43:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:26,852 INFO L225 Difference]: With dead ends: 344 [2022-03-17 18:43:26,852 INFO L226 Difference]: Without dead ends: 343 [2022-03-17 18:43:26,853 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:43:26,853 INFO L912 BasicCegarLoop]: 350 mSDtfsCounter, 533 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:26,854 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 459 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:43:26,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-17 18:43:26,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 301. [2022-03-17 18:43:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 237 states have (on average 1.3924050632911393) internal successors, (330), 240 states have internal predecessors, (330), 37 states have call successors, (37), 23 states have call predecessors, (37), 26 states have return successors, (44), 40 states have call predecessors, (44), 29 states have call successors, (44) [2022-03-17 18:43:26,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 411 transitions. [2022-03-17 18:43:26,872 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 411 transitions. Word has length 28 [2022-03-17 18:43:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:26,873 INFO L478 AbstractCegarLoop]: Abstraction has 301 states and 411 transitions. [2022-03-17 18:43:26,873 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:43:26,873 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 411 transitions. [2022-03-17 18:43:26,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-17 18:43:26,874 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:26,874 INFO L500 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] [2022-03-17 18:43:26,874 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 18:43:26,874 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:26,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:26,874 INFO L85 PathProgramCache]: Analyzing trace with hash 42368072, now seen corresponding path program 1 times [2022-03-17 18:43:26,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:26,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459492657] [2022-03-17 18:43:26,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:26,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:26,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:26,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:27,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:27,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459492657] [2022-03-17 18:43:27,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459492657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:27,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:27,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 18:43:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514918650] [2022-03-17 18:43:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:27,001 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:43:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:27,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:43:27,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:43:27,002 INFO L87 Difference]: Start difference. First operand 301 states and 411 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:43:27,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:27,426 INFO L93 Difference]: Finished difference Result 362 states and 486 transitions. [2022-03-17 18:43:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 18:43:27,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-03-17 18:43:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:27,428 INFO L225 Difference]: With dead ends: 362 [2022-03-17 18:43:27,428 INFO L226 Difference]: Without dead ends: 362 [2022-03-17 18:43:27,428 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:43:27,429 INFO L912 BasicCegarLoop]: 263 mSDtfsCounter, 568 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:27,429 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 378 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:43:27,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-17 18:43:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 341. [2022-03-17 18:43:27,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 278 states have (on average 1.3848920863309353) internal successors, (385), 279 states have internal predecessors, (385), 33 states have call successors, (33), 23 states have call predecessors, (33), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-03-17 18:43:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 462 transitions. [2022-03-17 18:43:27,443 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 462 transitions. Word has length 28 [2022-03-17 18:43:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:27,443 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 462 transitions. [2022-03-17 18:43:27,443 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:43:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 462 transitions. [2022-03-17 18:43:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-17 18:43:27,444 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:27,444 INFO L500 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] [2022-03-17 18:43:27,445 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 18:43:27,445 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:27,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:27,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1039161410, now seen corresponding path program 1 times [2022-03-17 18:43:27,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:27,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141171070] [2022-03-17 18:43:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:27,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:27,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:27,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141171070] [2022-03-17 18:43:27,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141171070] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:27,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:27,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 18:43:27,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063968657] [2022-03-17 18:43:27,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:27,559 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:43:27,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:27,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:43:27,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:43:27,560 INFO L87 Difference]: Start difference. First operand 341 states and 462 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:43:27,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:27,876 INFO L93 Difference]: Finished difference Result 340 states and 459 transitions. [2022-03-17 18:43:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 18:43:27,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-03-17 18:43:27,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:27,878 INFO L225 Difference]: With dead ends: 340 [2022-03-17 18:43:27,878 INFO L226 Difference]: Without dead ends: 340 [2022-03-17 18:43:27,878 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-17 18:43:27,879 INFO L912 BasicCegarLoop]: 264 mSDtfsCounter, 343 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:27,879 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 385 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:43:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-03-17 18:43:27,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2022-03-17 18:43:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 278 states have (on average 1.3776978417266188) internal successors, (383), 278 states have internal predecessors, (383), 32 states have call successors, (32), 23 states have call predecessors, (32), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-03-17 18:43:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 459 transitions. [2022-03-17 18:43:27,889 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 459 transitions. Word has length 38 [2022-03-17 18:43:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:27,889 INFO L478 AbstractCegarLoop]: Abstraction has 340 states and 459 transitions. [2022-03-17 18:43:27,890 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:43:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 459 transitions. [2022-03-17 18:43:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-17 18:43:27,892 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:27,892 INFO L500 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] [2022-03-17 18:43:27,892 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 18:43:27,892 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:27,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:27,892 INFO L85 PathProgramCache]: Analyzing trace with hash 827623692, now seen corresponding path program 1 times [2022-03-17 18:43:27,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:27,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674412507] [2022-03-17 18:43:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:27,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:27,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:27,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:27,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:28,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:28,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674412507] [2022-03-17 18:43:28,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674412507] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:28,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:28,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:43:28,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674423734] [2022-03-17 18:43:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:28,006 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:43:28,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:28,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:43:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:43:28,006 INFO L87 Difference]: Start difference. First operand 340 states and 459 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 18:43:28,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:28,533 INFO L93 Difference]: Finished difference Result 319 states and 423 transitions. [2022-03-17 18:43:28,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 18:43:28,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-03-17 18:43:28,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:28,535 INFO L225 Difference]: With dead ends: 319 [2022-03-17 18:43:28,535 INFO L226 Difference]: Without dead ends: 319 [2022-03-17 18:43:28,535 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:28,536 INFO L912 BasicCegarLoop]: 298 mSDtfsCounter, 744 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:28,536 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 543 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:43:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-03-17 18:43:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 301. [2022-03-17 18:43:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 244 states have (on average 1.3688524590163935) internal successors, (334), 244 states have internal predecessors, (334), 29 states have call successors, (29), 21 states have call predecessors, (29), 27 states have return successors, (39), 36 states have call predecessors, (39), 24 states have call successors, (39) [2022-03-17 18:43:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 402 transitions. [2022-03-17 18:43:28,543 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 402 transitions. Word has length 46 [2022-03-17 18:43:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:28,544 INFO L478 AbstractCegarLoop]: Abstraction has 301 states and 402 transitions. [2022-03-17 18:43:28,544 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 18:43:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 402 transitions. [2022-03-17 18:43:28,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-17 18:43:28,545 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:28,545 INFO L500 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] [2022-03-17 18:43:28,545 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-17 18:43:28,546 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:28,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1073883700, now seen corresponding path program 1 times [2022-03-17 18:43:28,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:28,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493775513] [2022-03-17 18:43:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:28,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-17 18:43:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:28,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:28,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:28,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493775513] [2022-03-17 18:43:28,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493775513] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:28,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:28,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:28,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664994488] [2022-03-17 18:43:28,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:28,747 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:28,748 INFO L87 Difference]: Start difference. First operand 301 states and 402 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:43:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:29,407 INFO L93 Difference]: Finished difference Result 322 states and 425 transitions. [2022-03-17 18:43:29,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 18:43:29,407 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-03-17 18:43:29,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:29,408 INFO L225 Difference]: With dead ends: 322 [2022-03-17 18:43:29,408 INFO L226 Difference]: Without dead ends: 322 [2022-03-17 18:43:29,409 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-03-17 18:43:29,409 INFO L912 BasicCegarLoop]: 252 mSDtfsCounter, 527 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:29,410 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 417 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:43:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-03-17 18:43:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 315. [2022-03-17 18:43:29,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 256 states have (on average 1.359375) internal successors, (348), 255 states have internal predecessors, (348), 29 states have call successors, (29), 21 states have call predecessors, (29), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-03-17 18:43:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 418 transitions. [2022-03-17 18:43:29,416 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 418 transitions. Word has length 45 [2022-03-17 18:43:29,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:29,416 INFO L478 AbstractCegarLoop]: Abstraction has 315 states and 418 transitions. [2022-03-17 18:43:29,417 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:43:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 418 transitions. [2022-03-17 18:43:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-17 18:43:29,418 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:29,418 INFO L500 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] [2022-03-17 18:43:29,418 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-17 18:43:29,418 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:29,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:29,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1039481029, now seen corresponding path program 1 times [2022-03-17 18:43:29,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:29,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924146643] [2022-03-17 18:43:29,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:29,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:29,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:29,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:29,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-17 18:43:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:29,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:29,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:29,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924146643] [2022-03-17 18:43:29,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924146643] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:29,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:29,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:29,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694422695] [2022-03-17 18:43:29,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:29,613 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:29,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:29,613 INFO L87 Difference]: Start difference. First operand 315 states and 418 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:43:30,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:30,372 INFO L93 Difference]: Finished difference Result 322 states and 424 transitions. [2022-03-17 18:43:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 18:43:30,373 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-03-17 18:43:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:30,374 INFO L225 Difference]: With dead ends: 322 [2022-03-17 18:43:30,374 INFO L226 Difference]: Without dead ends: 322 [2022-03-17 18:43:30,374 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-03-17 18:43:30,375 INFO L912 BasicCegarLoop]: 253 mSDtfsCounter, 645 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:30,375 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 584 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:43:30,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-03-17 18:43:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2022-03-17 18:43:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 257 states have (on average 1.3579766536964981) internal successors, (349), 256 states have internal predecessors, (349), 29 states have call successors, (29), 21 states have call predecessors, (29), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-03-17 18:43:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 419 transitions. [2022-03-17 18:43:30,382 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 419 transitions. Word has length 46 [2022-03-17 18:43:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:30,382 INFO L478 AbstractCegarLoop]: Abstraction has 316 states and 419 transitions. [2022-03-17 18:43:30,382 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:43:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 419 transitions. [2022-03-17 18:43:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-17 18:43:30,383 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:30,384 INFO L500 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] [2022-03-17 18:43:30,384 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-17 18:43:30,384 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:30,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2137589877, now seen corresponding path program 1 times [2022-03-17 18:43:30,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:30,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635896873] [2022-03-17 18:43:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:30,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-17 18:43:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:30,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:30,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635896873] [2022-03-17 18:43:30,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635896873] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:30,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:30,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:43:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689246101] [2022-03-17 18:43:30,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:30,500 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:43:30,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:30,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:43:30,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:43:30,501 INFO L87 Difference]: Start difference. First operand 316 states and 419 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:43:30,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:30,891 INFO L93 Difference]: Finished difference Result 310 states and 408 transitions. [2022-03-17 18:43:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:43:30,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-03-17 18:43:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:30,892 INFO L225 Difference]: With dead ends: 310 [2022-03-17 18:43:30,892 INFO L226 Difference]: Without dead ends: 102 [2022-03-17 18:43:30,892 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:30,893 INFO L912 BasicCegarLoop]: 247 mSDtfsCounter, 432 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:30,893 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 403 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:43:30,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-03-17 18:43:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-03-17 18:43:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 15 states have call successors, (15), 13 states have call predecessors, (15), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-03-17 18:43:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2022-03-17 18:43:30,895 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 47 [2022-03-17 18:43:30,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:30,895 INFO L478 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2022-03-17 18:43:30,895 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:43:30,896 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2022-03-17 18:43:30,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-17 18:43:30,896 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:30,896 INFO L500 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] [2022-03-17 18:43:30,896 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-17 18:43:30,896 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:30,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:30,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1910683918, now seen corresponding path program 1 times [2022-03-17 18:43:30,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:30,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040392914] [2022-03-17 18:43:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:30,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-17 18:43:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-17 18:43:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:30,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:30,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040392914] [2022-03-17 18:43:30,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040392914] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:30,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:30,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:43:30,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868716862] [2022-03-17 18:43:30,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:30,991 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:43:30,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:30,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:43:30,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:43:30,992 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:43:31,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:31,149 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2022-03-17 18:43:31,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:43:31,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2022-03-17 18:43:31,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:31,150 INFO L225 Difference]: With dead ends: 100 [2022-03-17 18:43:31,150 INFO L226 Difference]: Without dead ends: 100 [2022-03-17 18:43:31,150 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:43:31,150 INFO L912 BasicCegarLoop]: 84 mSDtfsCounter, 74 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:31,151 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 208 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-17 18:43:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-03-17 18:43:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 14 states have call successors, (14), 13 states have call predecessors, (14), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2022-03-17 18:43:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2022-03-17 18:43:31,153 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 53 [2022-03-17 18:43:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:31,153 INFO L478 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2022-03-17 18:43:31,153 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:43:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2022-03-17 18:43:31,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-17 18:43:31,153 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:31,153 INFO L500 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] [2022-03-17 18:43:31,154 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-17 18:43:31,154 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:31,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash -948674633, now seen corresponding path program 1 times [2022-03-17 18:43:31,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:31,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233980384] [2022-03-17 18:43:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:31,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:31,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:31,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233980384] [2022-03-17 18:43:31,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233980384] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:31,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:31,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 18:43:31,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237547655] [2022-03-17 18:43:31,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:31,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 18:43:31,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 18:43:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:43:31,283 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:43:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:31,401 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2022-03-17 18:43:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 18:43:31,401 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-03-17 18:43:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:31,402 INFO L225 Difference]: With dead ends: 118 [2022-03-17 18:43:31,402 INFO L226 Difference]: Without dead ends: 111 [2022-03-17 18:43:31,402 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:31,403 INFO L912 BasicCegarLoop]: 76 mSDtfsCounter, 106 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:31,403 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 308 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:31,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-03-17 18:43:31,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2022-03-17 18:43:31,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.1875) internal successors, (95), 81 states have internal predecessors, (95), 14 states have call successors, (14), 13 states have call predecessors, (14), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-03-17 18:43:31,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2022-03-17 18:43:31,405 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 57 [2022-03-17 18:43:31,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:31,405 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2022-03-17 18:43:31,405 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:43:31,405 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2022-03-17 18:43:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-17 18:43:31,406 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:31,406 INFO L500 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] [2022-03-17 18:43:31,406 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-17 18:43:31,406 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:31,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:31,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1641862871, now seen corresponding path program 1 times [2022-03-17 18:43:31,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:31,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156843274] [2022-03-17 18:43:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:31,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:31,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156843274] [2022-03-17 18:43:31,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156843274] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:31,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:31,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 18:43:31,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810226655] [2022-03-17 18:43:31,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:31,537 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 18:43:31,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 18:43:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:43:31,537 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:43:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:31,697 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-03-17 18:43:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:43:31,697 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-03-17 18:43:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:31,698 INFO L225 Difference]: With dead ends: 109 [2022-03-17 18:43:31,698 INFO L226 Difference]: Without dead ends: 109 [2022-03-17 18:43:31,698 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-03-17 18:43:31,699 INFO L912 BasicCegarLoop]: 76 mSDtfsCounter, 59 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:31,699 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 305 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:31,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-03-17 18:43:31,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-03-17 18:43:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 82 states have internal predecessors, (96), 14 states have call successors, (14), 13 states have call predecessors, (14), 10 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-03-17 18:43:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2022-03-17 18:43:31,701 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 57 [2022-03-17 18:43:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:31,701 INFO L478 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2022-03-17 18:43:31,701 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:43:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2022-03-17 18:43:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-17 18:43:31,702 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:31,702 INFO L500 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] [2022-03-17 18:43:31,702 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-17 18:43:31,702 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:31,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:31,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1083966817, now seen corresponding path program 1 times [2022-03-17 18:43:31,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:31,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984708461] [2022-03-17 18:43:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:31,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:31,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:31,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984708461] [2022-03-17 18:43:31,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984708461] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:31,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:31,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:43:31,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272941435] [2022-03-17 18:43:31,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:31,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:43:31,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:31,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:43:31,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:43:31,821 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 18:43:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:31,962 INFO L93 Difference]: Finished difference Result 196 states and 222 transitions. [2022-03-17 18:43:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 18:43:31,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2022-03-17 18:43:31,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:31,963 INFO L225 Difference]: With dead ends: 196 [2022-03-17 18:43:31,963 INFO L226 Difference]: Without dead ends: 196 [2022-03-17 18:43:31,963 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:43:31,964 INFO L912 BasicCegarLoop]: 83 mSDtfsCounter, 183 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:31,964 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 208 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:31,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-03-17 18:43:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 184. [2022-03-17 18:43:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 144 states have (on average 1.1875) internal successors, (171), 146 states have internal predecessors, (171), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (18), 17 states have call predecessors, (18), 14 states have call successors, (18) [2022-03-17 18:43:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 210 transitions. [2022-03-17 18:43:31,968 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 210 transitions. Word has length 58 [2022-03-17 18:43:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:31,968 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 210 transitions. [2022-03-17 18:43:31,968 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 8 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-17 18:43:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 210 transitions. [2022-03-17 18:43:31,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-17 18:43:31,968 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:31,969 INFO L500 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] [2022-03-17 18:43:31,969 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-17 18:43:31,969 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:31,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1971470498, now seen corresponding path program 1 times [2022-03-17 18:43:31,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:31,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144166831] [2022-03-17 18:43:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:31,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:32,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:32,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144166831] [2022-03-17 18:43:32,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144166831] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:32,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:32,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 18:43:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895907878] [2022-03-17 18:43:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:32,094 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 18:43:32,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:32,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 18:43:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:43:32,095 INFO L87 Difference]: Start difference. First operand 184 states and 210 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:43:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:32,180 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2022-03-17 18:43:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:43:32,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-17 18:43:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:32,181 INFO L225 Difference]: With dead ends: 172 [2022-03-17 18:43:32,181 INFO L226 Difference]: Without dead ends: 172 [2022-03-17 18:43:32,181 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:43:32,182 INFO L912 BasicCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:32,182 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 256 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:32,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-03-17 18:43:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-03-17 18:43:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 132 states have (on average 1.1590909090909092) internal successors, (153), 134 states have internal predecessors, (153), 21 states have call successors, (21), 20 states have call predecessors, (21), 18 states have return successors, (18), 17 states have call predecessors, (18), 14 states have call successors, (18) [2022-03-17 18:43:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2022-03-17 18:43:32,185 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 58 [2022-03-17 18:43:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:32,185 INFO L478 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2022-03-17 18:43:32,185 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:43:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2022-03-17 18:43:32,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-17 18:43:32,187 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:32,187 INFO L500 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] [2022-03-17 18:43:32,187 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-17 18:43:32,187 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:32,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:32,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2034770721, now seen corresponding path program 1 times [2022-03-17 18:43:32,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:32,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409045182] [2022-03-17 18:43:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:32,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 18:43:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:32,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:32,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409045182] [2022-03-17 18:43:32,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409045182] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:32,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:32,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:32,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577945614] [2022-03-17 18:43:32,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:32,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:32,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:32,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:32,354 INFO L87 Difference]: Start difference. First operand 172 states and 192 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:43:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:32,599 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2022-03-17 18:43:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:43:32,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-03-17 18:43:32,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:32,600 INFO L225 Difference]: With dead ends: 160 [2022-03-17 18:43:32,600 INFO L226 Difference]: Without dead ends: 156 [2022-03-17 18:43:32,600 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-03-17 18:43:32,601 INFO L912 BasicCegarLoop]: 70 mSDtfsCounter, 144 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:32,601 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 257 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-03-17 18:43:32,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-03-17 18:43:32,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 120 states have internal predecessors, (135), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-03-17 18:43:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 172 transitions. [2022-03-17 18:43:32,604 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 172 transitions. Word has length 62 [2022-03-17 18:43:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:32,604 INFO L478 AbstractCegarLoop]: Abstraction has 156 states and 172 transitions. [2022-03-17 18:43:32,604 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:43:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 172 transitions. [2022-03-17 18:43:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-17 18:43:32,605 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:32,605 INFO L500 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] [2022-03-17 18:43:32,605 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-17 18:43:32,605 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:32,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1057027574, now seen corresponding path program 1 times [2022-03-17 18:43:32,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:32,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168876510] [2022-03-17 18:43:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:32,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 18:43:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:32,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168876510] [2022-03-17 18:43:32,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168876510] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:32,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:32,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:43:32,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531137260] [2022-03-17 18:43:32,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:32,702 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:43:32,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:32,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:43:32,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:43:32,703 INFO L87 Difference]: Start difference. First operand 156 states and 172 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:43:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:32,781 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2022-03-17 18:43:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 18:43:32,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-03-17 18:43:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:32,782 INFO L225 Difference]: With dead ends: 168 [2022-03-17 18:43:32,782 INFO L226 Difference]: Without dead ends: 168 [2022-03-17 18:43:32,782 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:43:32,783 INFO L912 BasicCegarLoop]: 73 mSDtfsCounter, 103 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:32,783 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 207 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-03-17 18:43:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2022-03-17 18:43:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 124 states have (on average 1.1370967741935485) internal successors, (141), 126 states have internal predecessors, (141), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-03-17 18:43:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2022-03-17 18:43:32,786 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 64 [2022-03-17 18:43:32,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:32,786 INFO L478 AbstractCegarLoop]: Abstraction has 162 states and 178 transitions. [2022-03-17 18:43:32,786 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:43:32,786 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 178 transitions. [2022-03-17 18:43:32,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-17 18:43:32,787 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:32,787 INFO L500 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] [2022-03-17 18:43:32,787 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-17 18:43:32,787 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:32,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash 763624567, now seen corresponding path program 1 times [2022-03-17 18:43:32,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:32,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670265919] [2022-03-17 18:43:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:32,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 18:43:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:32,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:32,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670265919] [2022-03-17 18:43:32,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670265919] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:32,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:32,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:43:32,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75064490] [2022-03-17 18:43:32,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:32,882 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:43:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:32,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:43:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:43:32,883 INFO L87 Difference]: Start difference. First operand 162 states and 178 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:43:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:33,023 INFO L93 Difference]: Finished difference Result 179 states and 196 transitions. [2022-03-17 18:43:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:43:33,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-03-17 18:43:33,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:33,024 INFO L225 Difference]: With dead ends: 179 [2022-03-17 18:43:33,024 INFO L226 Difference]: Without dead ends: 177 [2022-03-17 18:43:33,025 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:43:33,025 INFO L912 BasicCegarLoop]: 84 mSDtfsCounter, 78 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:33,025 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 215 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:33,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-03-17 18:43:33,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 166. [2022-03-17 18:43:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.125) internal successors, (144), 130 states have internal predecessors, (144), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-03-17 18:43:33,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2022-03-17 18:43:33,028 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 64 [2022-03-17 18:43:33,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:33,028 INFO L478 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2022-03-17 18:43:33,028 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:43:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2022-03-17 18:43:33,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-17 18:43:33,029 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:33,029 INFO L500 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] [2022-03-17 18:43:33,029 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-17 18:43:33,029 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1206614856, now seen corresponding path program 1 times [2022-03-17 18:43:33,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:33,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099609321] [2022-03-17 18:43:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:33,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 18:43:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:33,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:33,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099609321] [2022-03-17 18:43:33,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099609321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:33,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:33,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:33,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050064498] [2022-03-17 18:43:33,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:33,182 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:33,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:33,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:33,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:33,182 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:43:33,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:33,340 INFO L93 Difference]: Finished difference Result 175 states and 188 transitions. [2022-03-17 18:43:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:43:33,340 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-03-17 18:43:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:33,341 INFO L225 Difference]: With dead ends: 175 [2022-03-17 18:43:33,341 INFO L226 Difference]: Without dead ends: 175 [2022-03-17 18:43:33,341 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:43:33,342 INFO L912 BasicCegarLoop]: 77 mSDtfsCounter, 87 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:33,342 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 337 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:33,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-03-17 18:43:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2022-03-17 18:43:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.109375) internal successors, (142), 130 states have internal predecessors, (142), 21 states have call successors, (21), 20 states have call predecessors, (21), 16 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-03-17 18:43:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2022-03-17 18:43:33,345 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 64 [2022-03-17 18:43:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:33,345 INFO L478 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2022-03-17 18:43:33,345 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:43:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2022-03-17 18:43:33,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-17 18:43:33,345 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:33,346 INFO L500 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] [2022-03-17 18:43:33,346 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-17 18:43:33,346 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:33,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:33,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2128246060, now seen corresponding path program 1 times [2022-03-17 18:43:33,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:33,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650085263] [2022-03-17 18:43:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:33,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 18:43:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:33,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:33,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650085263] [2022-03-17 18:43:33,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650085263] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:33,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:33,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:33,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742242247] [2022-03-17 18:43:33,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:33,512 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:33,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:33,513 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:43:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:33,816 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2022-03-17 18:43:33,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 18:43:33,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-03-17 18:43:33,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:33,817 INFO L225 Difference]: With dead ends: 163 [2022-03-17 18:43:33,817 INFO L226 Difference]: Without dead ends: 144 [2022-03-17 18:43:33,817 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-03-17 18:43:33,818 INFO L912 BasicCegarLoop]: 66 mSDtfsCounter, 205 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:33,818 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 154 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:33,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-03-17 18:43:33,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-03-17 18:43:33,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 109 states have (on average 1.091743119266055) internal successors, (119), 110 states have internal predecessors, (119), 20 states have call successors, (20), 19 states have call predecessors, (20), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-17 18:43:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2022-03-17 18:43:33,820 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 65 [2022-03-17 18:43:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:33,821 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2022-03-17 18:43:33,821 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:43:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2022-03-17 18:43:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-17 18:43:33,821 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:33,821 INFO L500 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] [2022-03-17 18:43:33,821 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-17 18:43:33,821 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:33,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:33,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1266450091, now seen corresponding path program 1 times [2022-03-17 18:43:33,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:33,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108973071] [2022-03-17 18:43:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:33,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 18:43:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:33,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:33,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108973071] [2022-03-17 18:43:33,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108973071] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:33,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:33,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:43:33,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046540598] [2022-03-17 18:43:33,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:33,940 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:43:33,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:33,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:43:33,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:43:33,941 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:43:34,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:34,046 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2022-03-17 18:43:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:43:34,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-03-17 18:43:34,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:34,047 INFO L225 Difference]: With dead ends: 139 [2022-03-17 18:43:34,047 INFO L226 Difference]: Without dead ends: 137 [2022-03-17 18:43:34,048 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:34,048 INFO L912 BasicCegarLoop]: 68 mSDtfsCounter, 72 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:34,048 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 155 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:34,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-03-17 18:43:34,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-03-17 18:43:34,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.058252427184466) internal successors, (109), 103 states have internal predecessors, (109), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-17 18:43:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 142 transitions. [2022-03-17 18:43:34,051 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 142 transitions. Word has length 65 [2022-03-17 18:43:34,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:34,051 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 142 transitions. [2022-03-17 18:43:34,051 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:43:34,051 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 142 transitions. [2022-03-17 18:43:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-17 18:43:34,052 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:34,052 INFO L500 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] [2022-03-17 18:43:34,052 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-17 18:43:34,052 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:34,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:34,052 INFO L85 PathProgramCache]: Analyzing trace with hash 79966819, now seen corresponding path program 1 times [2022-03-17 18:43:34,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:34,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951996456] [2022-03-17 18:43:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:34,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 18:43:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:34,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:34,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951996456] [2022-03-17 18:43:34,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951996456] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:34,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:34,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:43:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590890575] [2022-03-17 18:43:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:34,201 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:43:34,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:34,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:43:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:43:34,201 INFO L87 Difference]: Start difference. First operand 137 states and 142 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:43:34,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:34,347 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2022-03-17 18:43:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:43:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2022-03-17 18:43:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:34,348 INFO L225 Difference]: With dead ends: 137 [2022-03-17 18:43:34,348 INFO L226 Difference]: Without dead ends: 137 [2022-03-17 18:43:34,348 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:43:34,349 INFO L912 BasicCegarLoop]: 65 mSDtfsCounter, 37 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:34,349 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 260 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-03-17 18:43:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-03-17 18:43:34,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-17 18:43:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2022-03-17 18:43:34,351 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 65 [2022-03-17 18:43:34,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:34,351 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2022-03-17 18:43:34,351 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:43:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2022-03-17 18:43:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-17 18:43:34,352 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:34,352 INFO L500 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] [2022-03-17 18:43:34,352 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-17 18:43:34,352 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:34,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:34,352 INFO L85 PathProgramCache]: Analyzing trace with hash -117181948, now seen corresponding path program 1 times [2022-03-17 18:43:34,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:34,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619975513] [2022-03-17 18:43:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:34,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-17 18:43:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-17 18:43:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-17 18:43:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:34,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:34,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619975513] [2022-03-17 18:43:34,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619975513] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:34,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:34,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 18:43:34,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603859681] [2022-03-17 18:43:34,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:34,465 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 18:43:34,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:34,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 18:43:34,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:43:34,466 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-17 18:43:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:34,603 INFO L93 Difference]: Finished difference Result 108 states and 107 transitions. [2022-03-17 18:43:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:43:34,604 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-03-17 18:43:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:34,604 INFO L225 Difference]: With dead ends: 108 [2022-03-17 18:43:34,604 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 18:43:34,604 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:43:34,605 INFO L912 BasicCegarLoop]: 53 mSDtfsCounter, 31 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:34,605 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 186 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 18:43:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 18:43:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 18:43:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-17 18:43:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 18:43:34,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-03-17 18:43:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:34,606 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 18:43:34,606 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-17 18:43:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 18:43:34,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 18:43:34,608 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 18:43:34,608 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-17 18:43:34,610 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:34,611 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 18:43:34,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:43:34 BasicIcfg [2022-03-17 18:43:34,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 18:43:34,613 INFO L158 Benchmark]: Toolchain (without parser) took 10361.27ms. Allocated memory was 184.5MB in the beginning and 395.3MB in the end (delta: 210.8MB). Free memory was 130.2MB in the beginning and 352.1MB in the end (delta: -221.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 18:43:34,613 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 147.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 18:43:34,613 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.39ms. Allocated memory is still 184.5MB. Free memory was 129.9MB in the beginning and 154.0MB in the end (delta: -24.1MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-03-17 18:43:34,613 INFO L158 Benchmark]: Boogie Preprocessor took 50.35ms. Allocated memory is still 184.5MB. Free memory was 154.0MB in the beginning and 151.1MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-17 18:43:34,614 INFO L158 Benchmark]: RCFGBuilder took 498.71ms. Allocated memory is still 184.5MB. Free memory was 151.1MB in the beginning and 117.9MB in the end (delta: 33.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-03-17 18:43:34,614 INFO L158 Benchmark]: IcfgTransformer took 44.99ms. Allocated memory is still 184.5MB. Free memory was 117.9MB in the beginning and 113.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-17 18:43:34,614 INFO L158 Benchmark]: TraceAbstraction took 9442.98ms. Allocated memory was 184.5MB in the beginning and 395.3MB in the end (delta: 210.8MB). Free memory was 113.3MB in the beginning and 352.1MB in the end (delta: -238.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 18:43:34,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 147.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 310.39ms. Allocated memory is still 184.5MB. Free memory was 129.9MB in the beginning and 154.0MB in the end (delta: -24.1MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.35ms. Allocated memory is still 184.5MB. Free memory was 154.0MB in the beginning and 151.1MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 498.71ms. Allocated memory is still 184.5MB. Free memory was 151.1MB in the beginning and 117.9MB in the end (delta: 33.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * IcfgTransformer took 44.99ms. Allocated memory is still 184.5MB. Free memory was 117.9MB in the beginning and 113.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 9442.98ms. Allocated memory was 184.5MB in the beginning and 395.3MB in the end (delta: 210.8MB). Free memory was 113.3MB in the beginning and 352.1MB in the end (delta: -238.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1013]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.4s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5226 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5209 mSDsluCounter, 6671 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3495 mSDsCounter, 1267 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6357 IncrementalHoareTripleChecker+Invalid, 7624 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1267 mSolverCounterUnsat, 3176 mSDtfsCounter, 6357 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 419 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=3, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 169 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1106 NumberOfCodeBlocks, 1106 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1085 ConstructedInterpolants, 0 QuantifiedInterpolants, 5192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-17 18:43:34,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...