/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-7390193 [2022-04-05 04:11:45,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 04:11:45,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 04:11:45,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 04:11:45,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 04:11:45,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 04:11:45,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 04:11:45,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 04:11:45,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 04:11:45,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 04:11:45,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 04:11:45,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 04:11:45,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 04:11:45,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 04:11:45,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 04:11:45,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 04:11:45,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 04:11:45,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 04:11:45,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 04:11:45,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 04:11:45,274 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 04:11:45,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 04:11:45,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 04:11:45,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 04:11:45,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 04:11:45,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-05 04:11:45,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-05 04:11:45,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-05 04:11:45,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-05 04:11:45,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-05 04:11:45,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-05 04:11:45,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-05 04:11:45,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-05 04:11:45,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-05 04:11:45,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-05 04:11:45,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-05 04:11:45,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-05 04:11:45,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-05 04:11:45,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-05 04:11:45,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 04:11:45,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 04:11:45,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 04:11:45,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 04:11:45,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 04:11:45,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 04:11:45,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 04:11:45,319 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 04:11:45,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 04:11:45,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 04:11:45,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 04:11:45,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 04:11:45,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 04:11:45,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 04:11:45,320 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 04:11:45,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 04:11:45,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 04:11:45,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 04:11:45,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 04:11:45,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 04:11:45,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 04:11:45,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 04:11:45,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 04:11:45,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 04:11:45,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 04:11:45,322 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 04:11:45,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 04:11:45,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 04:11:45,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 04:11:45,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 04:11:45,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 04:11:45,529 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 04:11:45,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2022-04-05 04:11:45,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a92beb0e/396c43122ba14a1a9f7bf48e39e01cfa/FLAG04758cbcc [2022-04-05 04:11:45,988 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 04:11:45,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2022-04-05 04:11:46,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a92beb0e/396c43122ba14a1a9f7bf48e39e01cfa/FLAG04758cbcc [2022-04-05 04:11:46,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a92beb0e/396c43122ba14a1a9f7bf48e39e01cfa [2022-04-05 04:11:46,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 04:11:46,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 04:11:46,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 04:11:46,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 04:11:46,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 04:11:46,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 04:11:46" (1/1) ... [2022-04-05 04:11:46,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed2e4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46, skipping insertion in model container [2022-04-05 04:11:46,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 04:11:46" (1/1) ... [2022-04-05 04:11:46,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 04:11:46,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 04:11:46,689 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] [2022-04-05 04:11:46,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 04:11:46,702 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 04:11:46,753 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] [2022-04-05 04:11:46,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 04:11:46,763 INFO L208 MainTranslator]: Completed translation [2022-04-05 04:11:46,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46 WrapperNode [2022-04-05 04:11:46,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 04:11:46,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 04:11:46,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 04:11:46,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 04:11:46,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46" (1/1) ... [2022-04-05 04:11:46,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46" (1/1) ... [2022-04-05 04:11:46,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46" (1/1) ... [2022-04-05 04:11:46,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46" (1/1) ... [2022-04-05 04:11:46,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46" (1/1) ... [2022-04-05 04:11:46,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46" (1/1) ... [2022-04-05 04:11:46,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46" (1/1) ... [2022-04-05 04:11:46,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 04:11:46,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 04:11:46,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 04:11:46,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 04:11:46,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46" (1/1) ... [2022-04-05 04:11:46,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 04:11:46,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 04:11:46,861 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) [2022-04-05 04:11:46,866 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 [2022-04-05 04:11:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 04:11:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 04:11:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 04:11:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-05 04:11:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-05 04:11:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-04-05 04:11:46,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 04:11:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-05 04:11:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-05 04:11:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-05 04:11:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-05 04:11:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-05 04:11:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-04-05 04:11:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-04-05 04:11:46,911 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-04-05 04:11:46,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-04-05 04:11:46,922 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-05 04:11:46,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-04-05 04:11:46,922 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-05 04:11:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 04:11:46,922 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 04:11:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 04:11:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 04:11:46,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-05 04:11:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 04:11:46,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-05 04:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-05 04:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-04-05 04:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-05 04:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-05 04:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-05 04:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-04-05 04:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-04-05 04:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-04-05 04:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-04-05 04:11:46,925 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 04:11:46,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 04:11:47,025 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 04:11:47,039 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 04:11:47,110 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 04:11:47,179 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-04-05 04:11:47,180 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-04-05 04:11:47,184 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 04:11:47,205 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-05 04:11:47,205 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-05 04:11:47,257 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 04:11:47,267 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-05 04:11:47,267 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-05 04:11:47,272 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 04:11:47,327 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-04-05 04:11:47,327 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-04-05 04:11:47,330 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 04:11:47,342 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-04-05 04:11:47,342 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-04-05 04:11:47,346 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-05 04:11:47,360 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-05 04:11:47,361 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-05 04:11:47,378 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 04:11:47,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 04:11:47,385 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-04-05 04:11:47,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:11:47 BoogieIcfgContainer [2022-04-05 04:11:47,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 04:11:47,387 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 04:11:47,387 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 04:11:47,388 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 04:11:47,393 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:11:47" (1/1) ... [2022-04-05 04:11:47,395 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 04:11:47,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 04:11:47 BasicIcfg [2022-04-05 04:11:47,436 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 04:11:47,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 04:11:47,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 04:11:47,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 04:11:47,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 04:11:46" (1/4) ... [2022-04-05 04:11:47,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc14075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 04:11:47, skipping insertion in model container [2022-04-05 04:11:47,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:11:46" (2/4) ... [2022-04-05 04:11:47,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc14075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 04:11:47, skipping insertion in model container [2022-04-05 04:11:47,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:11:47" (3/4) ... [2022-04-05 04:11:47,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc14075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 04:11:47, skipping insertion in model container [2022-04-05 04:11:47,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 04:11:47" (4/4) ... [2022-04-05 04:11:47,442 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.cJordan [2022-04-05 04:11:47,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 04:11:47,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 04:11:47,478 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 04:11:47,483 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 [2022-04-05 04:11:47,483 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 04:11:47,497 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) [2022-04-05 04:11:47,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-05 04:11:47,509 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:47,509 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 04:11:47,510 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:47,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:47,514 INFO L85 PathProgramCache]: Analyzing trace with hash 685042341, now seen corresponding path program 1 times [2022-04-05 04:11:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:47,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485616968] [2022-04-05 04:11:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:47,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:47,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:47,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485616968] [2022-04-05 04:11:47,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485616968] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:47,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:47,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 04:11:47,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303307441] [2022-04-05 04:11:47,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:47,850 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 04:11:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 04:11:47,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-05 04:11:47,890 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) [2022-04-05 04:11:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:48,524 INFO L93 Difference]: Finished difference Result 267 states and 384 transitions. [2022-04-05 04:11:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 04:11:48,526 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 [2022-04-05 04:11:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:48,533 INFO L225 Difference]: With dead ends: 267 [2022-04-05 04:11:48,533 INFO L226 Difference]: Without dead ends: 256 [2022-04-05 04:11:48,534 INFO L912 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 [2022-04-05 04:11:48,536 INFO L913 BasicCegarLoop]: 296 mSDtfsCounter, 173 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-04-05 04:11:48,537 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 446 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-05 04:11:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-04-05 04:11:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 228. [2022-04-05 04:11:48,573 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) [2022-04-05 04:11:48,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 322 transitions. [2022-04-05 04:11:48,576 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 322 transitions. Word has length 20 [2022-04-05 04:11:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:48,576 INFO L478 AbstractCegarLoop]: Abstraction has 228 states and 322 transitions. [2022-04-05 04:11:48,576 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) [2022-04-05 04:11:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 322 transitions. [2022-04-05 04:11:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-05 04:11:48,577 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:48,577 INFO L499 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] [2022-04-05 04:11:48,577 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 04:11:48,577 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1276904425, now seen corresponding path program 1 times [2022-04-05 04:11:48,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:48,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814744088] [2022-04-05 04:11:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:48,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:48,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:48,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:48,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814744088] [2022-04-05 04:11:48,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814744088] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:48,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:48,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 04:11:48,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200845754] [2022-04-05 04:11:48,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:48,705 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 04:11:48,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:48,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 04:11:48,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 04:11:48,706 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) [2022-04-05 04:11:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:49,186 INFO L93 Difference]: Finished difference Result 344 states and 470 transitions. [2022-04-05 04:11:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 04:11:49,187 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 [2022-04-05 04:11:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:49,189 INFO L225 Difference]: With dead ends: 344 [2022-04-05 04:11:49,189 INFO L226 Difference]: Without dead ends: 343 [2022-04-05 04:11:49,189 INFO L912 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 [2022-04-05 04:11:49,190 INFO L913 BasicCegarLoop]: 352 mSDtfsCounter, 533 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 463 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 [2022-04-05 04:11:49,191 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [533 Valid, 463 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-05 04:11:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-04-05 04:11:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 301. [2022-04-05 04:11:49,205 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) [2022-04-05 04:11:49,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 411 transitions. [2022-04-05 04:11:49,207 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 411 transitions. Word has length 28 [2022-04-05 04:11:49,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:49,207 INFO L478 AbstractCegarLoop]: Abstraction has 301 states and 411 transitions. [2022-04-05 04:11:49,207 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) [2022-04-05 04:11:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 411 transitions. [2022-04-05 04:11:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-05 04:11:49,208 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:49,208 INFO L499 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] [2022-04-05 04:11:49,208 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 04:11:49,208 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:49,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash 42368072, now seen corresponding path program 1 times [2022-04-05 04:11:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:49,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783057045] [2022-04-05 04:11:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:49,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:49,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:49,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:49,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783057045] [2022-04-05 04:11:49,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783057045] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:49,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:49,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 04:11:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243879903] [2022-04-05 04:11:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:49,316 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 04:11:49,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:49,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 04:11:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 04:11:49,317 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) [2022-04-05 04:11:49,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:49,712 INFO L93 Difference]: Finished difference Result 362 states and 486 transitions. [2022-04-05 04:11:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 04:11:49,713 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 [2022-04-05 04:11:49,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:49,714 INFO L225 Difference]: With dead ends: 362 [2022-04-05 04:11:49,714 INFO L226 Difference]: Without dead ends: 362 [2022-04-05 04:11:49,715 INFO L912 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 [2022-04-05 04:11:49,715 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 04:11:49,716 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 378 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 04:11:49,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-04-05 04:11:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 341. [2022-04-05 04:11:49,727 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) [2022-04-05 04:11:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 462 transitions. [2022-04-05 04:11:49,729 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 462 transitions. Word has length 28 [2022-04-05 04:11:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:49,729 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 462 transitions. [2022-04-05 04:11:49,729 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) [2022-04-05 04:11:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 462 transitions. [2022-04-05 04:11:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-05 04:11:49,730 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:49,730 INFO L499 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] [2022-04-05 04:11:49,731 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-05 04:11:49,731 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:49,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1039161410, now seen corresponding path program 1 times [2022-04-05 04:11:49,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:49,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587217334] [2022-04-05 04:11:49,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:49,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:49,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:49,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:49,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587217334] [2022-04-05 04:11:49,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587217334] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:49,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:49,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 04:11:49,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160347657] [2022-04-05 04:11:49,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:49,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 04:11:49,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:49,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 04:11:49,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-05 04:11:49,833 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) [2022-04-05 04:11:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:50,180 INFO L93 Difference]: Finished difference Result 340 states and 459 transitions. [2022-04-05 04:11:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 04:11:50,180 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 [2022-04-05 04:11:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:50,181 INFO L225 Difference]: With dead ends: 340 [2022-04-05 04:11:50,182 INFO L226 Difference]: Without dead ends: 340 [2022-04-05 04:11:50,182 INFO L912 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 [2022-04-05 04:11:50,183 INFO L913 BasicCegarLoop]: 264 mSDtfsCounter, 343 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-04-05 04:11:50,183 INFO L914 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] [2022-04-05 04:11:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-04-05 04:11:50,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2022-04-05 04:11:50,191 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) [2022-04-05 04:11:50,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 459 transitions. [2022-04-05 04:11:50,192 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 459 transitions. Word has length 38 [2022-04-05 04:11:50,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:50,193 INFO L478 AbstractCegarLoop]: Abstraction has 340 states and 459 transitions. [2022-04-05 04:11:50,193 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) [2022-04-05 04:11:50,193 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 459 transitions. [2022-04-05 04:11:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-05 04:11:50,195 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:50,195 INFO L499 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] [2022-04-05 04:11:50,195 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-05 04:11:50,195 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:50,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash 827623692, now seen corresponding path program 1 times [2022-04-05 04:11:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:50,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234778816] [2022-04-05 04:11:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:50,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:50,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:50,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:50,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:50,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234778816] [2022-04-05 04:11:50,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234778816] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:50,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:50,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 04:11:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781031556] [2022-04-05 04:11:50,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:50,312 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 04:11:50,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:50,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 04:11:50,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-05 04:11:50,313 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) [2022-04-05 04:11:50,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:50,804 INFO L93 Difference]: Finished difference Result 319 states and 423 transitions. [2022-04-05 04:11:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 04:11:50,805 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 [2022-04-05 04:11:50,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:50,806 INFO L225 Difference]: With dead ends: 319 [2022-04-05 04:11:50,806 INFO L226 Difference]: Without dead ends: 319 [2022-04-05 04:11:50,806 INFO L912 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 [2022-04-05 04:11:50,807 INFO L913 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 [2022-04-05 04:11:50,807 INFO L914 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] [2022-04-05 04:11:50,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-04-05 04:11:50,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 301. [2022-04-05 04:11:50,816 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) [2022-04-05 04:11:50,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 402 transitions. [2022-04-05 04:11:50,817 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 402 transitions. Word has length 46 [2022-04-05 04:11:50,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:50,818 INFO L478 AbstractCegarLoop]: Abstraction has 301 states and 402 transitions. [2022-04-05 04:11:50,818 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) [2022-04-05 04:11:50,818 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 402 transitions. [2022-04-05 04:11:50,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-05 04:11:50,819 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:50,819 INFO L499 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] [2022-04-05 04:11:50,819 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-05 04:11:50,819 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:50,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:50,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1073883700, now seen corresponding path program 1 times [2022-04-05 04:11:50,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:50,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178613108] [2022-04-05 04:11:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:50,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:50,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:50,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 04:11:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:50,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 04:11:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:51,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:51,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178613108] [2022-04-05 04:11:51,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178613108] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:51,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:51,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 04:11:51,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849322459] [2022-04-05 04:11:51,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:51,004 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 04:11:51,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 04:11:51,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-05 04:11:51,005 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) [2022-04-05 04:11:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:51,684 INFO L93 Difference]: Finished difference Result 322 states and 425 transitions. [2022-04-05 04:11:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 04:11:51,685 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 [2022-04-05 04:11:51,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:51,700 INFO L225 Difference]: With dead ends: 322 [2022-04-05 04:11:51,700 INFO L226 Difference]: Without dead ends: 322 [2022-04-05 04:11:51,700 INFO L912 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 [2022-04-05 04:11:51,701 INFO L913 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 [2022-04-05 04:11:51,701 INFO L914 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] [2022-04-05 04:11:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-04-05 04:11:51,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 315. [2022-04-05 04:11:51,707 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) [2022-04-05 04:11:51,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 418 transitions. [2022-04-05 04:11:51,708 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 418 transitions. Word has length 45 [2022-04-05 04:11:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:51,709 INFO L478 AbstractCegarLoop]: Abstraction has 315 states and 418 transitions. [2022-04-05 04:11:51,709 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) [2022-04-05 04:11:51,709 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 418 transitions. [2022-04-05 04:11:51,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-05 04:11:51,710 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:51,710 INFO L499 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] [2022-04-05 04:11:51,710 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-05 04:11:51,710 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:51,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1039481029, now seen corresponding path program 1 times [2022-04-05 04:11:51,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:51,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16874082] [2022-04-05 04:11:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:51,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:51,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:51,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:51,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 04:11:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:51,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 04:11:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:51,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:51,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16874082] [2022-04-05 04:11:51,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16874082] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:51,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:51,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 04:11:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553714140] [2022-04-05 04:11:51,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:51,896 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 04:11:51,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:51,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 04:11:51,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-05 04:11:51,897 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) [2022-04-05 04:11:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:52,643 INFO L93 Difference]: Finished difference Result 322 states and 424 transitions. [2022-04-05 04:11:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 04:11:52,643 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 [2022-04-05 04:11:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:52,645 INFO L225 Difference]: With dead ends: 322 [2022-04-05 04:11:52,645 INFO L226 Difference]: Without dead ends: 322 [2022-04-05 04:11:52,646 INFO L912 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 [2022-04-05 04:11:52,649 INFO L913 BasicCegarLoop]: 253 mSDtfsCounter, 645 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-04-05 04:11:52,649 INFO L914 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] [2022-04-05 04:11:52,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-04-05 04:11:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2022-04-05 04:11:52,661 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) [2022-04-05 04:11:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 419 transitions. [2022-04-05 04:11:52,663 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 419 transitions. Word has length 46 [2022-04-05 04:11:52,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:52,663 INFO L478 AbstractCegarLoop]: Abstraction has 316 states and 419 transitions. [2022-04-05 04:11:52,663 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) [2022-04-05 04:11:52,663 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 419 transitions. [2022-04-05 04:11:52,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-05 04:11:52,665 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:52,665 INFO L499 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] [2022-04-05 04:11:52,665 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-05 04:11:52,665 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:52,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:52,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2137589877, now seen corresponding path program 1 times [2022-04-05 04:11:52,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:52,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274955328] [2022-04-05 04:11:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:52,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:52,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 04:11:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-05 04:11:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:52,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:52,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274955328] [2022-04-05 04:11:52,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274955328] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:52,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:52,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 04:11:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483153463] [2022-04-05 04:11:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:52,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 04:11:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 04:11:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-05 04:11:52,793 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) [2022-04-05 04:11:53,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:53,162 INFO L93 Difference]: Finished difference Result 310 states and 408 transitions. [2022-04-05 04:11:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 04:11:53,162 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 [2022-04-05 04:11:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:53,163 INFO L225 Difference]: With dead ends: 310 [2022-04-05 04:11:53,163 INFO L226 Difference]: Without dead ends: 102 [2022-04-05 04:11:53,163 INFO L912 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 [2022-04-05 04:11:53,163 INFO L913 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 [2022-04-05 04:11:53,164 INFO L914 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] [2022-04-05 04:11:53,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-04-05 04:11:53,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-04-05 04:11:53,165 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) [2022-04-05 04:11:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2022-04-05 04:11:53,166 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 47 [2022-04-05 04:11:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:53,166 INFO L478 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2022-04-05 04:11:53,166 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) [2022-04-05 04:11:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2022-04-05 04:11:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-05 04:11:53,166 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:53,167 INFO L499 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] [2022-04-05 04:11:53,167 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-05 04:11:53,167 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1910683918, now seen corresponding path program 1 times [2022-04-05 04:11:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:53,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932704426] [2022-04-05 04:11:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:53,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-05 04:11:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-04-05 04:11:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:53,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:53,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932704426] [2022-04-05 04:11:53,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932704426] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:53,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:53,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 04:11:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057451635] [2022-04-05 04:11:53,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:53,309 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 04:11:53,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 04:11:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-05 04:11:53,309 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) [2022-04-05 04:11:53,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:53,467 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2022-04-05 04:11:53,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 04:11:53,468 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 [2022-04-05 04:11:53,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:53,469 INFO L225 Difference]: With dead ends: 100 [2022-04-05 04:11:53,469 INFO L226 Difference]: Without dead ends: 100 [2022-04-05 04:11:53,469 INFO L912 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 [2022-04-05 04:11:53,469 INFO L913 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 [2022-04-05 04:11:53,470 INFO L914 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] [2022-04-05 04:11:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-04-05 04:11:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-04-05 04:11:53,471 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) [2022-04-05 04:11:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2022-04-05 04:11:53,472 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 53 [2022-04-05 04:11:53,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:53,472 INFO L478 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2022-04-05 04:11:53,472 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) [2022-04-05 04:11:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2022-04-05 04:11:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-05 04:11:53,473 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:53,473 INFO L499 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] [2022-04-05 04:11:53,473 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-05 04:11:53,473 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:53,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:53,473 INFO L85 PathProgramCache]: Analyzing trace with hash -948674633, now seen corresponding path program 1 times [2022-04-05 04:11:53,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:53,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306086952] [2022-04-05 04:11:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:53,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:53,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:53,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306086952] [2022-04-05 04:11:53,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306086952] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:53,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:53,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 04:11:53,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670135270] [2022-04-05 04:11:53,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:53,666 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 04:11:53,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:53,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 04:11:53,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-05 04:11:53,667 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) [2022-04-05 04:11:53,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:53,825 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2022-04-05 04:11:53,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 04:11:53,825 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 [2022-04-05 04:11:53,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:53,826 INFO L225 Difference]: With dead ends: 118 [2022-04-05 04:11:53,826 INFO L226 Difference]: Without dead ends: 111 [2022-04-05 04:11:53,826 INFO L912 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 [2022-04-05 04:11:53,827 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 106 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:11:53,827 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 307 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:11:53,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-04-05 04:11:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2022-04-05 04:11:53,829 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) [2022-04-05 04:11:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2022-04-05 04:11:53,830 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 57 [2022-04-05 04:11:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:53,830 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2022-04-05 04:11:53,830 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) [2022-04-05 04:11:53,831 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2022-04-05 04:11:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-05 04:11:53,831 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:53,831 INFO L499 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] [2022-04-05 04:11:53,831 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-05 04:11:53,831 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1641862871, now seen corresponding path program 1 times [2022-04-05 04:11:53,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:53,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422458852] [2022-04-05 04:11:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:53,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:54,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:54,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422458852] [2022-04-05 04:11:54,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422458852] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:54,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:54,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 04:11:54,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974700466] [2022-04-05 04:11:54,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:54,013 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 04:11:54,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:54,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 04:11:54,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-05 04:11:54,014 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) [2022-04-05 04:11:54,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:54,215 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-04-05 04:11:54,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 04:11:54,215 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 [2022-04-05 04:11:54,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:54,216 INFO L225 Difference]: With dead ends: 109 [2022-04-05 04:11:54,216 INFO L226 Difference]: Without dead ends: 109 [2022-04-05 04:11:54,217 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-04-05 04:11:54,217 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 59 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 04:11:54,217 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 304 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 04:11:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-04-05 04:11:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-04-05 04:11:54,220 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) [2022-04-05 04:11:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2022-04-05 04:11:54,220 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 57 [2022-04-05 04:11:54,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:54,220 INFO L478 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2022-04-05 04:11:54,221 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) [2022-04-05 04:11:54,221 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2022-04-05 04:11:54,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-05 04:11:54,221 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:54,221 INFO L499 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] [2022-04-05 04:11:54,222 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-05 04:11:54,222 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1083966817, now seen corresponding path program 1 times [2022-04-05 04:11:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:54,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568144902] [2022-04-05 04:11:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:54,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568144902] [2022-04-05 04:11:54,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568144902] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:54,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:54,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 04:11:54,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848571982] [2022-04-05 04:11:54,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:54,357 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 04:11:54,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:54,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 04:11:54,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-05 04:11:54,358 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) [2022-04-05 04:11:54,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:54,558 INFO L93 Difference]: Finished difference Result 196 states and 222 transitions. [2022-04-05 04:11:54,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 04:11:54,559 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 [2022-04-05 04:11:54,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:54,560 INFO L225 Difference]: With dead ends: 196 [2022-04-05 04:11:54,560 INFO L226 Difference]: Without dead ends: 196 [2022-04-05 04:11:54,560 INFO L912 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 [2022-04-05 04:11:54,561 INFO L913 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 [2022-04-05 04:11:54,561 INFO L914 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] [2022-04-05 04:11:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-04-05 04:11:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 184. [2022-04-05 04:11:54,565 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) [2022-04-05 04:11:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 210 transitions. [2022-04-05 04:11:54,566 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 210 transitions. Word has length 58 [2022-04-05 04:11:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:54,566 INFO L478 AbstractCegarLoop]: Abstraction has 184 states and 210 transitions. [2022-04-05 04:11:54,566 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) [2022-04-05 04:11:54,566 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 210 transitions. [2022-04-05 04:11:54,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-05 04:11:54,567 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:54,567 INFO L499 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] [2022-04-05 04:11:54,567 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-05 04:11:54,567 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:54,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:54,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1971470498, now seen corresponding path program 1 times [2022-04-05 04:11:54,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:54,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378388367] [2022-04-05 04:11:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:54,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:54,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:54,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378388367] [2022-04-05 04:11:54,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378388367] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:54,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:54,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-05 04:11:54,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340451594] [2022-04-05 04:11:54,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:54,734 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 04:11:54,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:54,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 04:11:54,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-05 04:11:54,734 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) [2022-04-05 04:11:54,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:54,852 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2022-04-05 04:11:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 04:11:54,853 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 [2022-04-05 04:11:54,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:54,854 INFO L225 Difference]: With dead ends: 172 [2022-04-05 04:11:54,854 INFO L226 Difference]: Without dead ends: 172 [2022-04-05 04:11:54,854 INFO L912 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 [2022-04-05 04:11:54,855 INFO L913 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 [2022-04-05 04:11:54,855 INFO L914 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] [2022-04-05 04:11:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-04-05 04:11:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-04-05 04:11:54,859 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) [2022-04-05 04:11:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2022-04-05 04:11:54,859 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 58 [2022-04-05 04:11:54,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:54,860 INFO L478 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2022-04-05 04:11:54,860 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) [2022-04-05 04:11:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2022-04-05 04:11:54,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-05 04:11:54,860 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:54,860 INFO L499 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] [2022-04-05 04:11:54,861 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-05 04:11:54,861 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:54,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:54,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2034770721, now seen corresponding path program 1 times [2022-04-05 04:11:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:54,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84993876] [2022-04-05 04:11:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:54,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 04:11:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:55,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:55,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84993876] [2022-04-05 04:11:55,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84993876] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:55,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:55,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 04:11:55,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040954967] [2022-04-05 04:11:55,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:55,075 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 04:11:55,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:55,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 04:11:55,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-05 04:11:55,076 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) [2022-04-05 04:11:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:55,381 INFO L93 Difference]: Finished difference Result 160 states and 176 transitions. [2022-04-05 04:11:55,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 04:11:55,381 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 [2022-04-05 04:11:55,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:55,382 INFO L225 Difference]: With dead ends: 160 [2022-04-05 04:11:55,382 INFO L226 Difference]: Without dead ends: 156 [2022-04-05 04:11:55,383 INFO L912 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 [2022-04-05 04:11:55,383 INFO L913 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, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 04:11:55,383 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 257 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 04:11:55,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-04-05 04:11:55,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-04-05 04:11:55,386 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) [2022-04-05 04:11:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 172 transitions. [2022-04-05 04:11:55,387 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 172 transitions. Word has length 62 [2022-04-05 04:11:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:55,387 INFO L478 AbstractCegarLoop]: Abstraction has 156 states and 172 transitions. [2022-04-05 04:11:55,387 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) [2022-04-05 04:11:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 172 transitions. [2022-04-05 04:11:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-05 04:11:55,388 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:55,388 INFO L499 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] [2022-04-05 04:11:55,388 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-05 04:11:55,388 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1057027574, now seen corresponding path program 1 times [2022-04-05 04:11:55,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:55,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654540888] [2022-04-05 04:11:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:55,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 04:11:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:55,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:55,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654540888] [2022-04-05 04:11:55,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654540888] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:55,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:55,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 04:11:55,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427105653] [2022-04-05 04:11:55,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:55,526 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 04:11:55,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 04:11:55,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-05 04:11:55,526 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) [2022-04-05 04:11:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:55,633 INFO L93 Difference]: Finished difference Result 168 states and 184 transitions. [2022-04-05 04:11:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 04:11:55,633 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 [2022-04-05 04:11:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:55,634 INFO L225 Difference]: With dead ends: 168 [2022-04-05 04:11:55,634 INFO L226 Difference]: Without dead ends: 168 [2022-04-05 04:11:55,635 INFO L912 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 [2022-04-05 04:11:55,635 INFO L913 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 [2022-04-05 04:11:55,635 INFO L914 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] [2022-04-05 04:11:55,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-04-05 04:11:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2022-04-05 04:11:55,638 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) [2022-04-05 04:11:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2022-04-05 04:11:55,639 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 64 [2022-04-05 04:11:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:55,639 INFO L478 AbstractCegarLoop]: Abstraction has 162 states and 178 transitions. [2022-04-05 04:11:55,639 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) [2022-04-05 04:11:55,639 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 178 transitions. [2022-04-05 04:11:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-05 04:11:55,640 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:55,640 INFO L499 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] [2022-04-05 04:11:55,640 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-05 04:11:55,640 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:55,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:55,641 INFO L85 PathProgramCache]: Analyzing trace with hash 763624567, now seen corresponding path program 1 times [2022-04-05 04:11:55,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:55,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355622242] [2022-04-05 04:11:55,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:55,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 04:11:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:55,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355622242] [2022-04-05 04:11:55,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355622242] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:55,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:55,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 04:11:55,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272919451] [2022-04-05 04:11:55,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:55,773 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 04:11:55,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 04:11:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-05 04:11:55,773 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) [2022-04-05 04:11:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:55,964 INFO L93 Difference]: Finished difference Result 179 states and 196 transitions. [2022-04-05 04:11:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 04:11:55,964 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 [2022-04-05 04:11:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:55,965 INFO L225 Difference]: With dead ends: 179 [2022-04-05 04:11:55,965 INFO L226 Difference]: Without dead ends: 177 [2022-04-05 04:11:55,965 INFO L912 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 [2022-04-05 04:11:55,967 INFO L913 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 [2022-04-05 04:11:55,967 INFO L914 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] [2022-04-05 04:11:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-04-05 04:11:55,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 166. [2022-04-05 04:11:55,970 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) [2022-04-05 04:11:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2022-04-05 04:11:55,970 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 64 [2022-04-05 04:11:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:55,970 INFO L478 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2022-04-05 04:11:55,971 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) [2022-04-05 04:11:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2022-04-05 04:11:55,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-05 04:11:55,971 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:55,971 INFO L499 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] [2022-04-05 04:11:55,971 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-05 04:11:55,971 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:55,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:55,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1206614856, now seen corresponding path program 1 times [2022-04-05 04:11:55,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:55,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745275210] [2022-04-05 04:11:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:55,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 04:11:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:56,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:56,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745275210] [2022-04-05 04:11:56,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745275210] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:56,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:56,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 04:11:56,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119110938] [2022-04-05 04:11:56,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:56,123 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 04:11:56,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:56,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 04:11:56,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-05 04:11:56,123 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) [2022-04-05 04:11:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:56,314 INFO L93 Difference]: Finished difference Result 175 states and 188 transitions. [2022-04-05 04:11:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 04:11:56,314 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 [2022-04-05 04:11:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:56,315 INFO L225 Difference]: With dead ends: 175 [2022-04-05 04:11:56,315 INFO L226 Difference]: Without dead ends: 175 [2022-04-05 04:11:56,315 INFO L912 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 [2022-04-05 04:11:56,316 INFO L913 BasicCegarLoop]: 77 mSDtfsCounter, 87 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 04:11:56,316 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 336 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 04:11:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-04-05 04:11:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2022-04-05 04:11:56,318 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) [2022-04-05 04:11:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2022-04-05 04:11:56,319 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 64 [2022-04-05 04:11:56,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:56,319 INFO L478 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2022-04-05 04:11:56,319 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) [2022-04-05 04:11:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2022-04-05 04:11:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-05 04:11:56,319 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:56,320 INFO L499 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] [2022-04-05 04:11:56,320 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-05 04:11:56,320 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:56,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2128246060, now seen corresponding path program 1 times [2022-04-05 04:11:56,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:56,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607791000] [2022-04-05 04:11:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:56,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 04:11:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:56,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607791000] [2022-04-05 04:11:56,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607791000] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:56,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:56,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 04:11:56,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743888503] [2022-04-05 04:11:56,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:56,513 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 04:11:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 04:11:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-04-05 04:11:56,514 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) [2022-04-05 04:11:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:56,838 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2022-04-05 04:11:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 04:11:56,839 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 [2022-04-05 04:11:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:56,839 INFO L225 Difference]: With dead ends: 163 [2022-04-05 04:11:56,839 INFO L226 Difference]: Without dead ends: 144 [2022-04-05 04:11:56,840 INFO L912 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 [2022-04-05 04:11:56,840 INFO L913 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 [2022-04-05 04:11:56,840 INFO L914 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] [2022-04-05 04:11:56,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-04-05 04:11:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-04-05 04:11:56,842 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) [2022-04-05 04:11:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2022-04-05 04:11:56,843 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 65 [2022-04-05 04:11:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:56,843 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2022-04-05 04:11:56,843 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) [2022-04-05 04:11:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2022-04-05 04:11:56,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-05 04:11:56,843 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:56,844 INFO L499 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] [2022-04-05 04:11:56,844 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-05 04:11:56,844 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:56,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:56,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1266450091, now seen corresponding path program 1 times [2022-04-05 04:11:56,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:56,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620918198] [2022-04-05 04:11:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:56,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 04:11:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:56,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:56,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620918198] [2022-04-05 04:11:56,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620918198] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:56,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:56,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 04:11:56,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895414078] [2022-04-05 04:11:56,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:56,982 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 04:11:56,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 04:11:56,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-05 04:11:56,983 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) [2022-04-05 04:11:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:57,106 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2022-04-05 04:11:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 04:11:57,107 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 [2022-04-05 04:11:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:57,107 INFO L225 Difference]: With dead ends: 139 [2022-04-05 04:11:57,107 INFO L226 Difference]: Without dead ends: 137 [2022-04-05 04:11:57,108 INFO L912 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 [2022-04-05 04:11:57,108 INFO L913 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 [2022-04-05 04:11:57,108 INFO L914 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] [2022-04-05 04:11:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-04-05 04:11:57,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-04-05 04:11:57,110 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) [2022-04-05 04:11:57,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 142 transitions. [2022-04-05 04:11:57,110 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 142 transitions. Word has length 65 [2022-04-05 04:11:57,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:57,111 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 142 transitions. [2022-04-05 04:11:57,111 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) [2022-04-05 04:11:57,111 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 142 transitions. [2022-04-05 04:11:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-05 04:11:57,111 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:57,111 INFO L499 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] [2022-04-05 04:11:57,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-05 04:11:57,111 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash 79966819, now seen corresponding path program 1 times [2022-04-05 04:11:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:57,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073026332] [2022-04-05 04:11:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 04:11:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:57,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:57,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073026332] [2022-04-05 04:11:57,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073026332] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:57,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:57,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-05 04:11:57,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759936561] [2022-04-05 04:11:57,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:57,280 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 04:11:57,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:57,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 04:11:57,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-05 04:11:57,280 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) [2022-04-05 04:11:57,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:57,454 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2022-04-05 04:11:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 04:11:57,454 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 [2022-04-05 04:11:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:57,455 INFO L225 Difference]: With dead ends: 137 [2022-04-05 04:11:57,455 INFO L226 Difference]: Without dead ends: 137 [2022-04-05 04:11:57,455 INFO L912 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 [2022-04-05 04:11:57,456 INFO L913 BasicCegarLoop]: 65 mSDtfsCounter, 37 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 04:11:57,456 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 259 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 04:11:57,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-04-05 04:11:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-04-05 04:11:57,461 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) [2022-04-05 04:11:57,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2022-04-05 04:11:57,461 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 65 [2022-04-05 04:11:57,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:57,462 INFO L478 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2022-04-05 04:11:57,462 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) [2022-04-05 04:11:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2022-04-05 04:11:57,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-04-05 04:11:57,462 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 04:11:57,462 INFO L499 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] [2022-04-05 04:11:57,462 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-05 04:11:57,463 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 04:11:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 04:11:57,463 INFO L85 PathProgramCache]: Analyzing trace with hash -117181948, now seen corresponding path program 1 times [2022-04-05 04:11:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 04:11:57,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25968158] [2022-04-05 04:11:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 04:11:57,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 04:11:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 04:11:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 04:11:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 04:11:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-05 04:11:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-05 04:11:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-05 04:11:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-05 04:11:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-05 04:11:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 04:11:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 04:11:57,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 04:11:57,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25968158] [2022-04-05 04:11:57,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25968158] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 04:11:57,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 04:11:57,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-05 04:11:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61481290] [2022-04-05 04:11:57,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 04:11:57,633 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-05 04:11:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 04:11:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-05 04:11:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-04-05 04:11:57,634 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) [2022-04-05 04:11:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 04:11:57,786 INFO L93 Difference]: Finished difference Result 108 states and 107 transitions. [2022-04-05 04:11:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 04:11:57,787 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 [2022-04-05 04:11:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 04:11:57,788 INFO L225 Difference]: With dead ends: 108 [2022-04-05 04:11:57,788 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 04:11:57,789 INFO L912 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 [2022-04-05 04:11:57,789 INFO L913 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 [2022-04-05 04:11:57,789 INFO L914 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] [2022-04-05 04:11:57,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 04:11:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 04:11:57,791 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) [2022-04-05 04:11:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 04:11:57,791 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2022-04-05 04:11:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 04:11:57,791 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 04:11:57,791 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) [2022-04-05 04:11:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 04:11:57,791 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 04:11:57,793 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 04:11:57,793 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-05 04:11:57,797 INFO L719 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] [2022-04-05 04:11:57,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 04:11:57,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 04:11:57 BasicIcfg [2022-04-05 04:11:57,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 04:11:57,801 INFO L158 Benchmark]: Toolchain (without parser) took 11411.71ms. Allocated memory was 189.8MB in the beginning and 357.6MB in the end (delta: 167.8MB). Free memory was 140.8MB in the beginning and 284.1MB in the end (delta: -143.3MB). Peak memory consumption was 23.7MB. Max. memory is 8.0GB. [2022-04-05 04:11:57,802 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory was 157.9MB in the beginning and 157.9MB in the end (delta: 74.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 04:11:57,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.27ms. Allocated memory is still 189.8MB. Free memory was 140.6MB in the beginning and 162.4MB in the end (delta: -21.8MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-04-05 04:11:57,804 INFO L158 Benchmark]: Boogie Preprocessor took 42.93ms. Allocated memory is still 189.8MB. Free memory was 162.4MB in the beginning and 159.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 04:11:57,805 INFO L158 Benchmark]: RCFGBuilder took 578.78ms. Allocated memory is still 189.8MB. Free memory was 159.6MB in the beginning and 125.7MB in the end (delta: 33.9MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2022-04-05 04:11:57,805 INFO L158 Benchmark]: IcfgTransformer took 49.07ms. Allocated memory is still 189.8MB. Free memory was 125.7MB in the beginning and 121.9MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-04-05 04:11:57,805 INFO L158 Benchmark]: TraceAbstraction took 10363.66ms. Allocated memory was 189.8MB in the beginning and 357.6MB in the end (delta: 167.8MB). Free memory was 121.1MB in the beginning and 284.1MB in the end (delta: -163.0MB). Peak memory consumption was 5.6MB. Max. memory is 8.0GB. [2022-04-05 04:11:57,807 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory was 157.9MB in the beginning and 157.9MB in the end (delta: 74.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 364.27ms. Allocated memory is still 189.8MB. Free memory was 140.6MB in the beginning and 162.4MB in the end (delta: -21.8MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.93ms. Allocated memory is still 189.8MB. Free memory was 162.4MB in the beginning and 159.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 578.78ms. Allocated memory is still 189.8MB. Free memory was 159.6MB in the beginning and 125.7MB in the end (delta: 33.9MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * IcfgTransformer took 49.07ms. Allocated memory is still 189.8MB. Free memory was 125.7MB in the beginning and 121.9MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 10363.66ms. Allocated memory was 189.8MB in the beginning and 357.6MB in the end (delta: 167.8MB). Free memory was 121.1MB in the beginning and 284.1MB in the end (delta: -163.0MB). Peak memory consumption was 5.6MB. 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: 10.3s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5226 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5209 mSDsluCounter, 6671 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3493 mSDsCounter, 1267 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6361 IncrementalHoareTripleChecker+Invalid, 7628 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1267 mSolverCounterUnsat, 3178 mSDtfsCounter, 6361 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, 3.0s 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, 2.9s 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! [2022-04-05 04:11:57,840 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...