/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 13:15:07,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 13:15:07,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 13:15:07,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 13:15:07,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 13:15:07,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 13:15:07,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 13:15:07,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 13:15:07,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 13:15:07,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 13:15:07,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 13:15:07,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 13:15:07,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 13:15:07,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 13:15:07,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 13:15:07,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 13:15:07,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 13:15:07,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 13:15:07,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 13:15:07,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 13:15:07,169 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 13:15:07,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 13:15:07,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 13:15:07,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 13:15:07,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 13:15:07,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-19 13:15:07,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-19 13:15:07,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-19 13:15:07,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-19 13:15:07,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-19 13:15:07,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-19 13:15:07,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 13:15:07,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 13:15:07,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 13:15:07,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-19 13:15:07,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 13:15:07,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 13:15:07,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 13:15:07,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 13:15:07,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 13:15:07,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 13:15:07,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 13:15:07,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 13:15:07,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 13:15:07,193 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 13:15:07,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 13:15:07,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 13:15:07,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 13:15:07,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 13:15:07,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 13:15:07,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:15:07,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 13:15:07,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 13:15:07,194 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 13:15:07,194 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 13:15:07,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 13:15:07,194 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-19 13:15:07,195 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 13:15:07,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 13:15:07,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 13:15:07,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 13:15:07,377 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 13:15:07,386 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 13:15:07,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2022-03-19 13:15:07,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0be6feb/a9574b3c234b4671a20bc6d0f8cefc43/FLAG43e326bf6 [2022-03-19 13:15:07,869 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 13:15:07,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2022-03-19 13:15:07,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0be6feb/a9574b3c234b4671a20bc6d0f8cefc43/FLAG43e326bf6 [2022-03-19 13:15:07,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0be6feb/a9574b3c234b4671a20bc6d0f8cefc43 [2022-03-19 13:15:07,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 13:15:07,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 13:15:07,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 13:15:07,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 13:15:07,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 13:15:07,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:15:07" (1/1) ... [2022-03-19 13:15:07,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4715ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:07, skipping insertion in model container [2022-03-19 13:15:07,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:15:07" (1/1) ... [2022-03-19 13:15:07,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 13:15:07,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 13:15:08,094 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-2.c[29656,29669] [2022-03-19 13:15:08,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:15:08,100 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 13:15:08,137 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-2.c[29656,29669] [2022-03-19 13:15:08,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 13:15:08,147 INFO L208 MainTranslator]: Completed translation [2022-03-19 13:15:08,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:08 WrapperNode [2022-03-19 13:15:08,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 13:15:08,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 13:15:08,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 13:15:08,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 13:15:08,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:08" (1/1) ... [2022-03-19 13:15:08,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:08" (1/1) ... [2022-03-19 13:15:08,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:08" (1/1) ... [2022-03-19 13:15:08,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:08" (1/1) ... [2022-03-19 13:15:08,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:08" (1/1) ... [2022-03-19 13:15:08,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:08" (1/1) ... [2022-03-19 13:15:08,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:08" (1/1) ... [2022-03-19 13:15:08,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 13:15:08,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 13:15:08,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 13:15:08,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 13:15:08,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:08" (1/1) ... [2022-03-19 13:15:08,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 13:15:08,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 13:15:08,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 13:15:08,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 13:15:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 13:15:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 13:15:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 13:15:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-19 13:15:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-19 13:15:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2022-03-19 13:15:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 13:15:08,266 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2022-03-19 13:15:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-19 13:15:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 13:15:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 13:15:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 13:15:08,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 13:15:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 13:15:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 13:15:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-19 13:15:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 13:15:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-19 13:15:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 13:15:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 13:15:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 13:15:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 13:15:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 13:15:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 13:15:08,393 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 13:15:08,394 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 13:15:08,495 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:15:08,628 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-19 13:15:08,629 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-19 13:15:08,644 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:15:08,688 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 13:15:08,688 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 13:15:08,788 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:15:08,819 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-19 13:15:08,819 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-19 13:15:08,829 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:15:08,940 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2022-03-19 13:15:08,940 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2022-03-19 13:15:08,952 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:15:08,963 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-19 13:15:08,963 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-19 13:15:08,974 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 13:15:09,007 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-03-19 13:15:09,007 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-03-19 13:15:09,030 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 13:15:09,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 13:15:09,036 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-19 13:15:09,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:15:09 BoogieIcfgContainer [2022-03-19 13:15:09,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 13:15:09,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 13:15:09,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 13:15:09,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 13:15:09,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 01:15:07" (1/3) ... [2022-03-19 13:15:09,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa706fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:15:09, skipping insertion in model container [2022-03-19 13:15:09,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:15:08" (2/3) ... [2022-03-19 13:15:09,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa706fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:15:09, skipping insertion in model container [2022-03-19 13:15:09,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:15:09" (3/3) ... [2022-03-19 13:15:09,049 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2022-03-19 13:15:09,054 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 13:15:09,054 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 13:15:09,094 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 13:15:09,100 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 13:15:09,100 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 13:15:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 200 states have internal predecessors, (284), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2022-03-19 13:15:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-19 13:15:09,129 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:09,129 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:09,130 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:09,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1235546278, now seen corresponding path program 1 times [2022-03-19 13:15:09,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:09,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1232066591] [2022-03-19 13:15:09,144 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1235546278, now seen corresponding path program 2 times [2022-03-19 13:15:09,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:09,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771495935] [2022-03-19 13:15:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:09,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:09,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:09,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771495935] [2022-03-19 13:15:09,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771495935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:09,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:09,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:15:09,380 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:09,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1232066591] [2022-03-19 13:15:09,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1232066591] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:09,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:09,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 13:15:09,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311776312] [2022-03-19 13:15:09,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:09,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 13:15:09,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 13:15:09,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:15:09,402 INFO L87 Difference]: Start difference. First operand has 240 states, 182 states have (on average 1.5604395604395604) internal successors, (284), 200 states have internal predecessors, (284), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 13:15:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:09,995 INFO L93 Difference]: Finished difference Result 417 states and 628 transitions. [2022-03-19 13:15:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 13:15:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-03-19 13:15:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:10,020 INFO L225 Difference]: With dead ends: 417 [2022-03-19 13:15:10,020 INFO L226 Difference]: Without dead ends: 259 [2022-03-19 13:15:10,030 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 13:15:10,034 INFO L912 BasicCegarLoop]: 297 mSDtfsCounter, 328 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:10,035 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 444 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 13:15:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-03-19 13:15:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2022-03-19 13:15:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 176 states have (on average 1.4943181818181819) internal successors, (263), 192 states have internal predecessors, (263), 39 states have call successors, (39), 17 states have call predecessors, (39), 15 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-19 13:15:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2022-03-19 13:15:10,082 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2022-03-19 13:15:10,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:10,083 INFO L478 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2022-03-19 13:15:10,083 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 13:15:10,083 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2022-03-19 13:15:10,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-19 13:15:10,084 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:10,084 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:10,084 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 13:15:10,084 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:10,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:10,084 INFO L85 PathProgramCache]: Analyzing trace with hash -225403307, now seen corresponding path program 1 times [2022-03-19 13:15:10,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:10,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1067624002] [2022-03-19 13:15:10,085 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:10,085 INFO L85 PathProgramCache]: Analyzing trace with hash -225403307, now seen corresponding path program 2 times [2022-03-19 13:15:10,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:10,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773124764] [2022-03-19 13:15:10,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:10,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:10,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:10,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:10,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:10,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773124764] [2022-03-19 13:15:10,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773124764] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:10,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:10,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:15:10,208 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:10,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1067624002] [2022-03-19 13:15:10,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1067624002] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:10,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:10,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:15:10,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961347745] [2022-03-19 13:15:10,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:10,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 13:15:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 13:15:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 13:15:10,210 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:15:10,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:10,878 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2022-03-19 13:15:10,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 13:15:10,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-03-19 13:15:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:10,881 INFO L225 Difference]: With dead ends: 410 [2022-03-19 13:15:10,881 INFO L226 Difference]: Without dead ends: 349 [2022-03-19 13:15:10,882 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:15:10,882 INFO L912 BasicCegarLoop]: 359 mSDtfsCounter, 386 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:10,883 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 474 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 13:15:10,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-03-19 13:15:10,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2022-03-19 13:15:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 239 states have (on average 1.393305439330544) internal successors, (333), 243 states have internal predecessors, (333), 38 states have call successors, (38), 23 states have call predecessors, (38), 26 states have return successors, (44), 40 states have call predecessors, (44), 29 states have call successors, (44) [2022-03-19 13:15:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2022-03-19 13:15:10,915 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2022-03-19 13:15:10,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:10,915 INFO L478 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2022-03-19 13:15:10,915 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:15:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2022-03-19 13:15:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-19 13:15:10,916 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:10,916 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:10,916 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 13:15:10,917 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:10,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:10,917 INFO L85 PathProgramCache]: Analyzing trace with hash -809602478, now seen corresponding path program 1 times [2022-03-19 13:15:10,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:10,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1615166416] [2022-03-19 13:15:10,917 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:10,917 INFO L85 PathProgramCache]: Analyzing trace with hash -809602478, now seen corresponding path program 2 times [2022-03-19 13:15:10,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:10,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025782635] [2022-03-19 13:15:10,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:10,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:10,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:10,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:11,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:11,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025782635] [2022-03-19 13:15:11,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025782635] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:11,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:11,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:15:11,015 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:11,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1615166416] [2022-03-19 13:15:11,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1615166416] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:11,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:11,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:15:11,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679103406] [2022-03-19 13:15:11,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:11,016 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 13:15:11,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 13:15:11,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 13:15:11,017 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:15:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:11,468 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2022-03-19 13:15:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 13:15:11,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-03-19 13:15:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:11,471 INFO L225 Difference]: With dead ends: 487 [2022-03-19 13:15:11,471 INFO L226 Difference]: Without dead ends: 368 [2022-03-19 13:15:11,471 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:15:11,472 INFO L912 BasicCegarLoop]: 267 mSDtfsCounter, 410 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:11,472 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 366 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 13:15:11,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-03-19 13:15:11,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2022-03-19 13:15:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 280 states have (on average 1.3857142857142857) internal successors, (388), 282 states have internal predecessors, (388), 34 states have call successors, (34), 23 states have call predecessors, (34), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-03-19 13:15:11,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2022-03-19 13:15:11,498 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2022-03-19 13:15:11,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:11,498 INFO L478 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2022-03-19 13:15:11,498 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:15:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2022-03-19 13:15:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-19 13:15:11,500 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:11,500 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:11,500 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 13:15:11,500 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:11,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:11,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1415760533, now seen corresponding path program 1 times [2022-03-19 13:15:11,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:11,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [639392643] [2022-03-19 13:15:11,501 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:11,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1415760533, now seen corresponding path program 2 times [2022-03-19 13:15:11,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:11,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78925017] [2022-03-19 13:15:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:11,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:11,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:11,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:11,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:11,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78925017] [2022-03-19 13:15:11,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78925017] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:11,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:11,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:15:11,601 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:11,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [639392643] [2022-03-19 13:15:11,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [639392643] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:11,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:11,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 13:15:11,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441163101] [2022-03-19 13:15:11,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:11,602 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 13:15:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:11,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 13:15:11,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 13:15:11,603 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:15:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:12,055 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2022-03-19 13:15:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 13:15:12,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-03-19 13:15:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:12,057 INFO L225 Difference]: With dead ends: 347 [2022-03-19 13:15:12,057 INFO L226 Difference]: Without dead ends: 343 [2022-03-19 13:15:12,058 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-19 13:15:12,058 INFO L912 BasicCegarLoop]: 268 mSDtfsCounter, 189 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:12,059 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 393 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 13:15:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-03-19 13:15:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2022-03-19 13:15:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 280 states have (on average 1.3785714285714286) internal successors, (386), 281 states have internal predecessors, (386), 33 states have call successors, (33), 23 states have call predecessors, (33), 29 states have return successors, (44), 39 states have call predecessors, (44), 27 states have call successors, (44) [2022-03-19 13:15:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2022-03-19 13:15:12,079 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2022-03-19 13:15:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:12,080 INFO L478 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2022-03-19 13:15:12,080 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 13:15:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2022-03-19 13:15:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-19 13:15:12,081 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:12,082 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:12,082 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 13:15:12,082 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:12,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash 605107567, now seen corresponding path program 1 times [2022-03-19 13:15:12,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:12,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1708856859] [2022-03-19 13:15:12,083 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash 605107567, now seen corresponding path program 2 times [2022-03-19 13:15:12,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:12,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552972480] [2022-03-19 13:15:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:12,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:12,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 13:15:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:12,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:12,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552972480] [2022-03-19 13:15:12,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552972480] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:12,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:12,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:15:12,203 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:12,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1708856859] [2022-03-19 13:15:12,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1708856859] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:12,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:12,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:15:12,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685880610] [2022-03-19 13:15:12,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:12,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:15:12,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:12,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:15:12,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:15:12,204 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 13:15:12,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:12,844 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2022-03-19 13:15:12,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 13:15:12,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-03-19 13:15:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:12,845 INFO L225 Difference]: With dead ends: 394 [2022-03-19 13:15:12,846 INFO L226 Difference]: Without dead ends: 325 [2022-03-19 13:15:12,846 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:15:12,846 INFO L912 BasicCegarLoop]: 306 mSDtfsCounter, 603 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:12,847 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 583 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 13:15:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-19 13:15:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2022-03-19 13:15:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 246 states have (on average 1.3699186991869918) internal successors, (337), 247 states have internal predecessors, (337), 30 states have call successors, (30), 21 states have call predecessors, (30), 27 states have return successors, (39), 36 states have call predecessors, (39), 24 states have call successors, (39) [2022-03-19 13:15:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2022-03-19 13:15:12,880 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2022-03-19 13:15:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:12,880 INFO L478 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2022-03-19 13:15:12,881 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 13:15:12,881 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2022-03-19 13:15:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-19 13:15:12,882 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:12,882 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:12,882 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 13:15:12,882 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:12,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:12,883 INFO L85 PathProgramCache]: Analyzing trace with hash -447308474, now seen corresponding path program 1 times [2022-03-19 13:15:12,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:12,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1746778790] [2022-03-19 13:15:12,883 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:12,883 INFO L85 PathProgramCache]: Analyzing trace with hash -447308474, now seen corresponding path program 2 times [2022-03-19 13:15:12,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:12,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446347493] [2022-03-19 13:15:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:12,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:13,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:13,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 13:15:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 13:15:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:13,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446347493] [2022-03-19 13:15:13,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446347493] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:13,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:13,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:15:13,066 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1746778790] [2022-03-19 13:15:13,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1746778790] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:13,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:13,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:15:13,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366009251] [2022-03-19 13:15:13,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:13,067 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 13:15:13,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:13,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 13:15:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:15:13,068 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:15:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:13,887 INFO L93 Difference]: Finished difference Result 334 states and 440 transitions. [2022-03-19 13:15:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:15:13,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-03-19 13:15:13,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:13,889 INFO L225 Difference]: With dead ends: 334 [2022-03-19 13:15:13,889 INFO L226 Difference]: Without dead ends: 325 [2022-03-19 13:15:13,889 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:15:13,890 INFO L912 BasicCegarLoop]: 255 mSDtfsCounter, 1079 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:13,890 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 500 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 13:15:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-19 13:15:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2022-03-19 13:15:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 260 states have (on average 1.3615384615384616) internal successors, (354), 260 states have internal predecessors, (354), 30 states have call successors, (30), 21 states have call predecessors, (30), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-03-19 13:15:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 425 transitions. [2022-03-19 13:15:13,936 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 425 transitions. Word has length 45 [2022-03-19 13:15:13,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:13,937 INFO L478 AbstractCegarLoop]: Abstraction has 320 states and 425 transitions. [2022-03-19 13:15:13,937 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:15:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 425 transitions. [2022-03-19 13:15:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-19 13:15:13,938 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:13,938 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:13,938 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 13:15:13,938 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:13,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:13,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1360970565, now seen corresponding path program 1 times [2022-03-19 13:15:13,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:13,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1495091706] [2022-03-19 13:15:13,939 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:13,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1360970565, now seen corresponding path program 2 times [2022-03-19 13:15:13,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:13,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21569949] [2022-03-19 13:15:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:13,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:14,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 13:15:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 13:15:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:14,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:14,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21569949] [2022-03-19 13:15:14,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21569949] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:14,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:14,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:15:14,203 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:14,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1495091706] [2022-03-19 13:15:14,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1495091706] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:14,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:14,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:15:14,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838926334] [2022-03-19 13:15:14,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:14,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 13:15:14,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:14,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 13:15:14,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:15:14,204 INFO L87 Difference]: Start difference. First operand 320 states and 425 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:15:14,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:14,936 INFO L93 Difference]: Finished difference Result 330 states and 433 transitions. [2022-03-19 13:15:14,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:15:14,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-03-19 13:15:14,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:14,938 INFO L225 Difference]: With dead ends: 330 [2022-03-19 13:15:14,938 INFO L226 Difference]: Without dead ends: 325 [2022-03-19 13:15:14,939 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:15:14,939 INFO L912 BasicCegarLoop]: 256 mSDtfsCounter, 783 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:14,939 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 423 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 13:15:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-19 13:15:14,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 320. [2022-03-19 13:15:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 260 states have (on average 1.3576923076923078) internal successors, (353), 260 states have internal predecessors, (353), 30 states have call successors, (30), 21 states have call predecessors, (30), 29 states have return successors, (41), 38 states have call predecessors, (41), 24 states have call successors, (41) [2022-03-19 13:15:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 424 transitions. [2022-03-19 13:15:14,964 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 424 transitions. Word has length 46 [2022-03-19 13:15:14,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:14,964 INFO L478 AbstractCegarLoop]: Abstraction has 320 states and 424 transitions. [2022-03-19 13:15:14,964 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:15:14,964 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 424 transitions. [2022-03-19 13:15:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-19 13:15:14,965 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:14,965 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:14,965 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 13:15:14,965 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:14,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash 548356508, now seen corresponding path program 1 times [2022-03-19 13:15:14,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:14,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1528634935] [2022-03-19 13:15:14,966 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash 548356508, now seen corresponding path program 2 times [2022-03-19 13:15:14,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:14,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406810488] [2022-03-19 13:15:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:14,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 13:15:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 13:15:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:15,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:15,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406810488] [2022-03-19 13:15:15,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406810488] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:15,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:15,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:15:15,098 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:15,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1528634935] [2022-03-19 13:15:15,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1528634935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:15,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:15,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:15:15,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73232478] [2022-03-19 13:15:15,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:15,099 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:15:15,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:15,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:15:15,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:15:15,099 INFO L87 Difference]: Start difference. First operand 320 states and 424 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:15:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:15,450 INFO L93 Difference]: Finished difference Result 338 states and 446 transitions. [2022-03-19 13:15:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 13:15:15,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-03-19 13:15:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:15,451 INFO L225 Difference]: With dead ends: 338 [2022-03-19 13:15:15,451 INFO L226 Difference]: Without dead ends: 272 [2022-03-19 13:15:15,452 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:15:15,452 INFO L912 BasicCegarLoop]: 250 mSDtfsCounter, 581 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:15,452 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 356 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 13:15:15,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-03-19 13:15:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 242. [2022-03-19 13:15:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 198 states have (on average 1.378787878787879) internal successors, (273), 201 states have internal predecessors, (273), 27 states have call successors, (27), 19 states have call predecessors, (27), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-19 13:15:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2022-03-19 13:15:15,474 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 47 [2022-03-19 13:15:15,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:15,474 INFO L478 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2022-03-19 13:15:15,474 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:15:15,474 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2022-03-19 13:15:15,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 13:15:15,475 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:15,475 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:15,475 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 13:15:15,475 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:15,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:15,475 INFO L85 PathProgramCache]: Analyzing trace with hash 916659597, now seen corresponding path program 1 times [2022-03-19 13:15:15,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:15,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [325426547] [2022-03-19 13:15:15,476 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:15,476 INFO L85 PathProgramCache]: Analyzing trace with hash 916659597, now seen corresponding path program 2 times [2022-03-19 13:15:15,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:15,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351561951] [2022-03-19 13:15:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-19 13:15:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:15:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 13:15:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:15,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:15,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351561951] [2022-03-19 13:15:15,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351561951] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:15,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:15,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:15:15,594 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:15,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [325426547] [2022-03-19 13:15:15,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [325426547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:15,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:15,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 13:15:15,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606956263] [2022-03-19 13:15:15,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:15,595 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 13:15:15,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:15,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 13:15:15,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-19 13:15:15,595 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:15:16,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:16,110 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2022-03-19 13:15:16,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 13:15:16,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2022-03-19 13:15:16,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:16,111 INFO L225 Difference]: With dead ends: 270 [2022-03-19 13:15:16,111 INFO L226 Difference]: Without dead ends: 240 [2022-03-19 13:15:16,111 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:15:16,112 INFO L912 BasicCegarLoop]: 243 mSDtfsCounter, 339 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:16,112 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 506 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 13:15:16,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-03-19 13:15:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-03-19 13:15:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 197 states have (on average 1.3705583756345177) internal successors, (270), 199 states have internal predecessors, (270), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-19 13:15:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2022-03-19 13:15:16,138 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2022-03-19 13:15:16,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:16,138 INFO L478 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2022-03-19 13:15:16,138 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:15:16,138 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2022-03-19 13:15:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-19 13:15:16,139 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:16,139 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:16,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 13:15:16,139 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1556296422, now seen corresponding path program 1 times [2022-03-19 13:15:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:16,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1413685005] [2022-03-19 13:15:16,140 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1556296422, now seen corresponding path program 2 times [2022-03-19 13:15:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:16,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262546728] [2022-03-19 13:15:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:16,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:16,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:16,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 13:15:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:16,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:15:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:16,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:16,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262546728] [2022-03-19 13:15:16,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262546728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:16,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:16,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:15:16,282 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1413685005] [2022-03-19 13:15:16,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1413685005] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:16,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:16,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:15:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691029617] [2022-03-19 13:15:16,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:16,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:15:16,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:16,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:15:16,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:15:16,283 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:15:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:17,020 INFO L93 Difference]: Finished difference Result 284 states and 365 transitions. [2022-03-19 13:15:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 13:15:17,020 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2022-03-19 13:15:17,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:17,021 INFO L225 Difference]: With dead ends: 284 [2022-03-19 13:15:17,021 INFO L226 Difference]: Without dead ends: 243 [2022-03-19 13:15:17,022 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-03-19 13:15:17,022 INFO L912 BasicCegarLoop]: 252 mSDtfsCounter, 655 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:17,022 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 593 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 13:15:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-03-19 13:15:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 240. [2022-03-19 13:15:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 199 states have internal predecessors, (268), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-19 13:15:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2022-03-19 13:15:17,057 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 51 [2022-03-19 13:15:17,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:17,057 INFO L478 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2022-03-19 13:15:17,057 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:15:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2022-03-19 13:15:17,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 13:15:17,059 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:17,059 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:17,059 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 13:15:17,059 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:17,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:17,059 INFO L85 PathProgramCache]: Analyzing trace with hash 460482069, now seen corresponding path program 1 times [2022-03-19 13:15:17,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:17,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2028984577] [2022-03-19 13:15:17,061 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash 460482069, now seen corresponding path program 2 times [2022-03-19 13:15:17,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:17,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341480125] [2022-03-19 13:15:17,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:17,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:17,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:17,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 13:15:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:15:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:17,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:17,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341480125] [2022-03-19 13:15:17,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341480125] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:17,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:17,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:15:17,261 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:17,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2028984577] [2022-03-19 13:15:17,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2028984577] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:17,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:17,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:15:17,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332065946] [2022-03-19 13:15:17,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:17,262 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:15:17,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:17,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:15:17,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:15:17,263 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:15:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:17,926 INFO L93 Difference]: Finished difference Result 272 states and 349 transitions. [2022-03-19 13:15:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:15:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-03-19 13:15:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:17,927 INFO L225 Difference]: With dead ends: 272 [2022-03-19 13:15:17,927 INFO L226 Difference]: Without dead ends: 253 [2022-03-19 13:15:17,928 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-03-19 13:15:17,928 INFO L912 BasicCegarLoop]: 238 mSDtfsCounter, 655 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:17,928 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 562 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 13:15:17,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-03-19 13:15:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 243. [2022-03-19 13:15:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 200 states have (on average 1.36) internal successors, (272), 202 states have internal predecessors, (272), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-19 13:15:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 319 transitions. [2022-03-19 13:15:17,953 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 319 transitions. Word has length 53 [2022-03-19 13:15:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:17,953 INFO L478 AbstractCegarLoop]: Abstraction has 243 states and 319 transitions. [2022-03-19 13:15:17,953 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 13:15:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 319 transitions. [2022-03-19 13:15:17,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 13:15:17,954 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:17,954 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:17,954 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 13:15:17,954 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:17,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1533662637, now seen corresponding path program 1 times [2022-03-19 13:15:17,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:17,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [492322975] [2022-03-19 13:15:17,955 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:17,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1533662637, now seen corresponding path program 2 times [2022-03-19 13:15:17,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:17,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748961196] [2022-03-19 13:15:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:17,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:18,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:18,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:18,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 13:15:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:15:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:18,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:18,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748961196] [2022-03-19 13:15:18,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748961196] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:18,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:18,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:15:18,117 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:18,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [492322975] [2022-03-19 13:15:18,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [492322975] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:18,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:18,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:15:18,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808151938] [2022-03-19 13:15:18,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:18,117 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 13:15:18,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:18,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 13:15:18,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:15:18,118 INFO L87 Difference]: Start difference. First operand 243 states and 319 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:15:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:18,923 INFO L93 Difference]: Finished difference Result 284 states and 365 transitions. [2022-03-19 13:15:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:15:18,924 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2022-03-19 13:15:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:18,925 INFO L225 Difference]: With dead ends: 284 [2022-03-19 13:15:18,925 INFO L226 Difference]: Without dead ends: 240 [2022-03-19 13:15:18,925 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-03-19 13:15:18,925 INFO L912 BasicCegarLoop]: 234 mSDtfsCounter, 451 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:18,926 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 572 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 13:15:18,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-03-19 13:15:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2022-03-19 13:15:18,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 195 states have (on average 1.3435897435897435) internal successors, (262), 197 states have internal predecessors, (262), 26 states have call successors, (26), 19 states have call predecessors, (26), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-03-19 13:15:18,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 309 transitions. [2022-03-19 13:15:18,963 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 309 transitions. Word has length 53 [2022-03-19 13:15:18,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:18,964 INFO L478 AbstractCegarLoop]: Abstraction has 238 states and 309 transitions. [2022-03-19 13:15:18,964 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 13:15:18,964 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 309 transitions. [2022-03-19 13:15:18,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 13:15:18,965 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:18,965 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:18,965 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 13:15:18,965 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:18,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:18,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1386969835, now seen corresponding path program 1 times [2022-03-19 13:15:18,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:18,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [490620085] [2022-03-19 13:15:18,966 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:18,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1386969835, now seen corresponding path program 2 times [2022-03-19 13:15:18,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:18,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221766020] [2022-03-19 13:15:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:18,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-19 13:15:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 13:15:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:19,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:19,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221766020] [2022-03-19 13:15:19,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221766020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:19,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:19,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:15:19,130 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:19,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [490620085] [2022-03-19 13:15:19,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [490620085] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:19,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:19,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 13:15:19,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675693220] [2022-03-19 13:15:19,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:19,131 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 13:15:19,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 13:15:19,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-19 13:15:19,131 INFO L87 Difference]: Start difference. First operand 238 states and 309 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:15:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:19,743 INFO L93 Difference]: Finished difference Result 250 states and 321 transitions. [2022-03-19 13:15:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 13:15:19,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2022-03-19 13:15:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:19,745 INFO L225 Difference]: With dead ends: 250 [2022-03-19 13:15:19,745 INFO L226 Difference]: Without dead ends: 210 [2022-03-19 13:15:19,745 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-19 13:15:19,745 INFO L912 BasicCegarLoop]: 244 mSDtfsCounter, 433 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:19,745 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 905 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 13:15:19,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-03-19 13:15:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-03-19 13:15:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 171 states have (on average 1.345029239766082) internal successors, (230), 173 states have internal predecessors, (230), 24 states have call successors, (24), 17 states have call predecessors, (24), 14 states have return successors, (19), 19 states have call predecessors, (19), 18 states have call successors, (19) [2022-03-19 13:15:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 273 transitions. [2022-03-19 13:15:19,765 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 273 transitions. Word has length 53 [2022-03-19 13:15:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:19,765 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 273 transitions. [2022-03-19 13:15:19,765 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:15:19,765 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 273 transitions. [2022-03-19 13:15:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-19 13:15:19,766 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:19,766 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:19,766 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 13:15:19,766 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:19,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash -438914869, now seen corresponding path program 1 times [2022-03-19 13:15:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:19,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1357334076] [2022-03-19 13:15:19,767 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash -438914869, now seen corresponding path program 2 times [2022-03-19 13:15:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:19,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19952925] [2022-03-19 13:15:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 13:15:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:19,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:19,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19952925] [2022-03-19 13:15:19,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19952925] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:19,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:19,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:15:19,931 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:19,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1357334076] [2022-03-19 13:15:19,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1357334076] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:19,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:19,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:15:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123854938] [2022-03-19 13:15:19,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:19,931 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 13:15:19,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 13:15:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:15:19,932 INFO L87 Difference]: Start difference. First operand 210 states and 273 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:15:20,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:20,636 INFO L93 Difference]: Finished difference Result 226 states and 289 transitions. [2022-03-19 13:15:20,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:15:20,636 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-03-19 13:15:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:20,637 INFO L225 Difference]: With dead ends: 226 [2022-03-19 13:15:20,637 INFO L226 Difference]: Without dead ends: 205 [2022-03-19 13:15:20,638 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:15:20,638 INFO L912 BasicCegarLoop]: 214 mSDtfsCounter, 366 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:20,638 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 840 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 13:15:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-03-19 13:15:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-03-19 13:15:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 167 states have (on average 1.347305389221557) internal successors, (225), 169 states have internal predecessors, (225), 23 states have call successors, (23), 17 states have call predecessors, (23), 14 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-03-19 13:15:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 266 transitions. [2022-03-19 13:15:20,661 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 266 transitions. Word has length 54 [2022-03-19 13:15:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:20,661 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 266 transitions. [2022-03-19 13:15:20,661 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:15:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 266 transitions. [2022-03-19 13:15:20,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-19 13:15:20,662 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:20,662 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:20,662 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 13:15:20,662 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:20,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash 432963036, now seen corresponding path program 1 times [2022-03-19 13:15:20,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:20,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [468641954] [2022-03-19 13:15:20,678 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:20,678 INFO L85 PathProgramCache]: Analyzing trace with hash 432963036, now seen corresponding path program 2 times [2022-03-19 13:15:20,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:20,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566856420] [2022-03-19 13:15:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:20,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:20,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:20,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 13:15:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:20,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:15:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:20,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:15:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:20,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:20,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566856420] [2022-03-19 13:15:20,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566856420] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:20,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:20,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:15:20,823 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:20,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [468641954] [2022-03-19 13:15:20,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [468641954] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:20,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:20,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:15:20,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090310869] [2022-03-19 13:15:20,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:20,823 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:15:20,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:20,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:15:20,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:15:20,824 INFO L87 Difference]: Start difference. First operand 205 states and 266 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:15:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:21,308 INFO L93 Difference]: Finished difference Result 263 states and 337 transitions. [2022-03-19 13:15:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:15:21,309 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-03-19 13:15:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:21,310 INFO L225 Difference]: With dead ends: 263 [2022-03-19 13:15:21,310 INFO L226 Difference]: Without dead ends: 222 [2022-03-19 13:15:21,310 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:15:21,310 INFO L912 BasicCegarLoop]: 203 mSDtfsCounter, 273 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:21,310 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 671 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 13:15:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-03-19 13:15:21,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 210. [2022-03-19 13:15:21,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 171 states have (on average 1.3391812865497077) internal successors, (229), 173 states have internal predecessors, (229), 23 states have call successors, (23), 17 states have call predecessors, (23), 15 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) [2022-03-19 13:15:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 271 transitions. [2022-03-19 13:15:21,331 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 271 transitions. Word has length 57 [2022-03-19 13:15:21,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:21,331 INFO L478 AbstractCegarLoop]: Abstraction has 210 states and 271 transitions. [2022-03-19 13:15:21,332 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:15:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 271 transitions. [2022-03-19 13:15:21,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-19 13:15:21,332 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:21,332 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:21,332 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 13:15:21,332 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:21,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1039954733, now seen corresponding path program 1 times [2022-03-19 13:15:21,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:21,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1462241228] [2022-03-19 13:15:21,333 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1039954733, now seen corresponding path program 2 times [2022-03-19 13:15:21,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:21,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419585388] [2022-03-19 13:15:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:21,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:21,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 13:15:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:21,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:15:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:21,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:15:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:21,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:21,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419585388] [2022-03-19 13:15:21,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419585388] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:21,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:21,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:15:21,471 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:21,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1462241228] [2022-03-19 13:15:21,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1462241228] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:21,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:21,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 13:15:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641357766] [2022-03-19 13:15:21,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:21,472 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 13:15:21,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:21,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 13:15:21,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-19 13:15:21,472 INFO L87 Difference]: Start difference. First operand 210 states and 271 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:15:22,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:22,071 INFO L93 Difference]: Finished difference Result 230 states and 294 transitions. [2022-03-19 13:15:22,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 13:15:22,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2022-03-19 13:15:22,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:22,073 INFO L225 Difference]: With dead ends: 230 [2022-03-19 13:15:22,073 INFO L226 Difference]: Without dead ends: 223 [2022-03-19 13:15:22,073 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-03-19 13:15:22,074 INFO L912 BasicCegarLoop]: 205 mSDtfsCounter, 200 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:22,074 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 653 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 13:15:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-03-19 13:15:22,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 211. [2022-03-19 13:15:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 172 states have (on average 1.3372093023255813) internal successors, (230), 174 states have internal predecessors, (230), 23 states have call successors, (23), 17 states have call predecessors, (23), 15 states have return successors, (19), 19 states have call predecessors, (19), 17 states have call successors, (19) [2022-03-19 13:15:22,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 272 transitions. [2022-03-19 13:15:22,108 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 272 transitions. Word has length 57 [2022-03-19 13:15:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:22,108 INFO L478 AbstractCegarLoop]: Abstraction has 211 states and 272 transitions. [2022-03-19 13:15:22,108 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:15:22,108 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 272 transitions. [2022-03-19 13:15:22,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 13:15:22,109 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:22,109 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:22,109 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 13:15:22,109 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:22,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2132592656, now seen corresponding path program 1 times [2022-03-19 13:15:22,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:22,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1723755070] [2022-03-19 13:15:22,110 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2132592656, now seen corresponding path program 2 times [2022-03-19 13:15:22,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:22,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780310058] [2022-03-19 13:15:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:22,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:22,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:22,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:22,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 13:15:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:22,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 13:15:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 13:15:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:22,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:22,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780310058] [2022-03-19 13:15:22,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780310058] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:22,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:22,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 13:15:22,290 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:22,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1723755070] [2022-03-19 13:15:22,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1723755070] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:22,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:22,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 13:15:22,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191162415] [2022-03-19 13:15:22,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:22,290 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 13:15:22,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:22,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 13:15:22,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-19 13:15:22,291 INFO L87 Difference]: Start difference. First operand 211 states and 272 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:15:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:22,918 INFO L93 Difference]: Finished difference Result 223 states and 284 transitions. [2022-03-19 13:15:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 13:15:22,918 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 56 [2022-03-19 13:15:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:22,919 INFO L225 Difference]: With dead ends: 223 [2022-03-19 13:15:22,919 INFO L226 Difference]: Without dead ends: 209 [2022-03-19 13:15:22,919 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:15:22,920 INFO L912 BasicCegarLoop]: 208 mSDtfsCounter, 358 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:22,920 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 916 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 13:15:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-03-19 13:15:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-03-19 13:15:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 171 states have (on average 1.3333333333333333) internal successors, (228), 173 states have internal predecessors, (228), 22 states have call successors, (22), 17 states have call predecessors, (22), 15 states have return successors, (18), 18 states have call predecessors, (18), 16 states have call successors, (18) [2022-03-19 13:15:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 268 transitions. [2022-03-19 13:15:22,974 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 268 transitions. Word has length 56 [2022-03-19 13:15:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:22,974 INFO L478 AbstractCegarLoop]: Abstraction has 209 states and 268 transitions. [2022-03-19 13:15:22,974 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:15:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 268 transitions. [2022-03-19 13:15:22,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 13:15:22,975 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:22,975 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:22,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 13:15:22,975 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:22,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:22,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1221590652, now seen corresponding path program 1 times [2022-03-19 13:15:22,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:22,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [340023060] [2022-03-19 13:15:22,976 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1221590652, now seen corresponding path program 2 times [2022-03-19 13:15:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:22,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665917587] [2022-03-19 13:15:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:23,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 13:15:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:23,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 13:15:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:23,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:23,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665917587] [2022-03-19 13:15:23,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665917587] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:23,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:23,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 13:15:23,130 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:23,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [340023060] [2022-03-19 13:15:23,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [340023060] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:23,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:23,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 13:15:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256085366] [2022-03-19 13:15:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:23,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 13:15:23,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 13:15:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-19 13:15:23,131 INFO L87 Difference]: Start difference. First operand 209 states and 268 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:15:24,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:24,069 INFO L93 Difference]: Finished difference Result 266 states and 329 transitions. [2022-03-19 13:15:24,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 13:15:24,070 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-03-19 13:15:24,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:24,071 INFO L225 Difference]: With dead ends: 266 [2022-03-19 13:15:24,071 INFO L226 Difference]: Without dead ends: 249 [2022-03-19 13:15:24,072 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-03-19 13:15:24,072 INFO L912 BasicCegarLoop]: 199 mSDtfsCounter, 629 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:24,072 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 612 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 13:15:24,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-03-19 13:15:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 215. [2022-03-19 13:15:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 176 states have (on average 1.3238636363636365) internal successors, (233), 179 states have internal predecessors, (233), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (20), 18 states have call predecessors, (20), 16 states have call successors, (20) [2022-03-19 13:15:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 275 transitions. [2022-03-19 13:15:24,110 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 275 transitions. Word has length 55 [2022-03-19 13:15:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:24,111 INFO L478 AbstractCegarLoop]: Abstraction has 215 states and 275 transitions. [2022-03-19 13:15:24,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:15:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 275 transitions. [2022-03-19 13:15:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 13:15:24,111 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:24,112 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:24,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 13:15:24,112 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:24,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2050869943, now seen corresponding path program 1 times [2022-03-19 13:15:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:24,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [881840010] [2022-03-19 13:15:24,112 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2050869943, now seen corresponding path program 2 times [2022-03-19 13:15:24,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:24,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572065891] [2022-03-19 13:15:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:24,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:24,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 13:15:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:24,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 13:15:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:24,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:24,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572065891] [2022-03-19 13:15:24,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572065891] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:24,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:24,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:15:24,386 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:24,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [881840010] [2022-03-19 13:15:24,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [881840010] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:24,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:24,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 13:15:24,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644686972] [2022-03-19 13:15:24,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:24,386 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 13:15:24,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 13:15:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-03-19 13:15:24,387 INFO L87 Difference]: Start difference. First operand 215 states and 275 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:15:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:25,157 INFO L93 Difference]: Finished difference Result 231 states and 291 transitions. [2022-03-19 13:15:25,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 13:15:25,157 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2022-03-19 13:15:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:25,158 INFO L225 Difference]: With dead ends: 231 [2022-03-19 13:15:25,159 INFO L226 Difference]: Without dead ends: 193 [2022-03-19 13:15:25,159 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-19 13:15:25,159 INFO L912 BasicCegarLoop]: 204 mSDtfsCounter, 242 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:25,159 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 824 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 13:15:25,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-03-19 13:15:25,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-03-19 13:15:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 155 states have (on average 1.2451612903225806) internal successors, (193), 158 states have internal predecessors, (193), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (18), 17 states have call predecessors, (18), 15 states have call successors, (18) [2022-03-19 13:15:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 232 transitions. [2022-03-19 13:15:25,182 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 232 transitions. Word has length 55 [2022-03-19 13:15:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:25,183 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 232 transitions. [2022-03-19 13:15:25,183 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 13:15:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 232 transitions. [2022-03-19 13:15:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-19 13:15:25,183 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:25,183 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:25,183 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 13:15:25,184 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:25,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:25,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1918234721, now seen corresponding path program 1 times [2022-03-19 13:15:25,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:25,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1855841582] [2022-03-19 13:15:25,184 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:25,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1918234721, now seen corresponding path program 2 times [2022-03-19 13:15:25,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:25,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773160963] [2022-03-19 13:15:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:25,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:25,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 13:15:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:25,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 13:15:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 13:15:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-19 13:15:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:25,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 13:15:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:25,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 13:15:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 13:15:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 13:15:25,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 13:15:25,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773160963] [2022-03-19 13:15:25,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773160963] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:25,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:25,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:15:25,359 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 13:15:25,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1855841582] [2022-03-19 13:15:25,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1855841582] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 13:15:25,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 13:15:25,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 13:15:25,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432943438] [2022-03-19 13:15:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 13:15:25,360 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 13:15:25,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 13:15:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:15:25,361 INFO L87 Difference]: Start difference. First operand 193 states and 232 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:15:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 13:15:25,725 INFO L93 Difference]: Finished difference Result 229 states and 273 transitions. [2022-03-19 13:15:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 13:15:25,726 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-19 13:15:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 13:15:25,739 INFO L225 Difference]: With dead ends: 229 [2022-03-19 13:15:25,739 INFO L226 Difference]: Without dead ends: 187 [2022-03-19 13:15:25,740 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-03-19 13:15:25,741 INFO L912 BasicCegarLoop]: 172 mSDtfsCounter, 193 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 13:15:25,741 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 533 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 13:15:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-03-19 13:15:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-03-19 13:15:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 149 states have (on average 1.2348993288590604) internal successors, (184), 152 states have internal predecessors, (184), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (18), 17 states have call predecessors, (18), 15 states have call successors, (18) [2022-03-19 13:15:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2022-03-19 13:15:25,781 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 58 [2022-03-19 13:15:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 13:15:25,781 INFO L478 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2022-03-19 13:15:25,781 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 13:15:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2022-03-19 13:15:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 13:15:25,782 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 13:15:25,782 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 13:15:25,782 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 13:15:25,782 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 13:15:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 13:15:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1199488421, now seen corresponding path program 1 times [2022-03-19 13:15:25,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 13:15:25,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1133232408] [2022-03-19 13:15:25,783 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 13:15:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1199488421, now seen corresponding path program 2 times [2022-03-19 13:15:25,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 13:15:25,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215223726] [2022-03-19 13:15:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 13:15:25,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 13:15:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 13:15:25,799 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 13:15:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 13:15:25,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 13:15:25,837 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-19 13:15:25,838 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-19 13:15:25,839 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 13:15:25,840 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 13:15:25,842 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-03-19 13:15:25,844 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 13:15:25,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 01:15:25 BoogieIcfgContainer [2022-03-19 13:15:25,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 13:15:25,858 INFO L158 Benchmark]: Toolchain (without parser) took 17969.02ms. Allocated memory was 163.6MB in the beginning and 405.8MB in the end (delta: 242.2MB). Free memory was 109.4MB in the beginning and 263.6MB in the end (delta: -154.3MB). Peak memory consumption was 88.6MB. Max. memory is 8.0GB. [2022-03-19 13:15:25,858 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 163.6MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 13:15:25,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.74ms. Allocated memory is still 163.6MB. Free memory was 109.2MB in the beginning and 129.6MB in the end (delta: -20.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-03-19 13:15:25,858 INFO L158 Benchmark]: Boogie Preprocessor took 33.92ms. Allocated memory is still 163.6MB. Free memory was 129.6MB in the beginning and 126.6MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-19 13:15:25,858 INFO L158 Benchmark]: RCFGBuilder took 855.75ms. Allocated memory is still 163.6MB. Free memory was 126.6MB in the beginning and 92.9MB in the end (delta: 33.7MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-03-19 13:15:25,858 INFO L158 Benchmark]: TraceAbstraction took 16813.52ms. Allocated memory was 163.6MB in the beginning and 405.8MB in the end (delta: 242.2MB). Free memory was 92.4MB in the beginning and 263.6MB in the end (delta: -171.2MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2022-03-19 13:15:25,859 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 163.6MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 257.74ms. Allocated memory is still 163.6MB. Free memory was 109.2MB in the beginning and 129.6MB in the end (delta: -20.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.92ms. Allocated memory is still 163.6MB. Free memory was 129.6MB in the beginning and 126.6MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 855.75ms. Allocated memory is still 163.6MB. Free memory was 126.6MB in the beginning and 92.9MB in the end (delta: 33.7MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 16813.52ms. Allocated memory was 163.6MB in the beginning and 405.8MB in the end (delta: 242.2MB). Free memory was 92.4MB in the beginning and 263.6MB in the end (delta: -171.2MB). Peak memory consumption was 71.3MB. 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 - CounterExampleResult [Line: 1013]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int KernelMode ; [L24] int Executive ; [L25] int DevicePowerState ; [L26] int s ; [L27] int UNLOADED ; [L28] int NP ; [L29] int DC ; [L30] int SKIP1 ; [L31] int SKIP2 ; [L32] int MPR1 ; [L33] int MPR3 ; [L34] int IPC ; [L35] int pended ; [L36] int compFptr ; [L37] int compRegistered ; [L38] int lowerDriverReturn ; [L39] int setEventCalled ; [L40] int customIrp ; [L41] int myStatus ; [L294] int status ; [L295] int irp = __VERIFIER_nondet_int() ; [L296] int pirp ; [L297] int pirp__IoStatus__Status ; [L298] int irp_choice = __VERIFIER_nondet_int() ; [L299] int devobj = __VERIFIER_nondet_int() ; [L300] int __cil_tmp8 ; [L302] KernelMode = 0 [L303] Executive = 0 [L304] DevicePowerState = 1 [L305] s = 0 [L306] UNLOADED = 0 [L307] NP = 0 [L308] DC = 0 [L309] SKIP1 = 0 [L310] SKIP2 = 0 [L311] MPR1 = 0 [L312] MPR3 = 0 [L313] IPC = 0 [L314] pended = 0 [L315] compFptr = 0 [L316] compRegistered = 0 [L317] lowerDriverReturn = 0 [L318] setEventCalled = 0 [L319] customIrp = 0 [L320] myStatus = 0 [L324] status = 0 [L325] pirp = irp [L326] CALL _BLAST_init() [L61] UNLOADED = 0 [L62] NP = 1 [L63] DC = 2 [L64] SKIP1 = 3 [L65] SKIP2 = 4 [L66] MPR1 = 5 [L67] MPR3 = 6 [L68] IPC = 7 [L69] s = UNLOADED [L70] pended = 0 [L71] compFptr = 0 [L72] compRegistered = 0 [L73] lowerDriverReturn = 0 [L74] setEventCalled = 0 [L75] customIrp = 0 [L326] RET _BLAST_init() [L328] COND TRUE status >= 0 [L329] s = NP [L330] customIrp = 0 [L331] setEventCalled = customIrp [L332] lowerDriverReturn = setEventCalled [L333] compRegistered = lowerDriverReturn [L334] pended = compRegistered [L335] pirp__IoStatus__Status = 0 [L336] myStatus = 0 [L337] COND FALSE !(irp_choice == 0) [L342] CALL stub_driver_init() [L47] s = NP [L48] pended = 0 [L49] compFptr = 0 [L50] compRegistered = 0 [L51] lowerDriverReturn = 0 [L52] setEventCalled = 0 [L53] customIrp = 0 [L342] RET stub_driver_init() [L345] COND FALSE !(status < 0) [L349] int tmp_ndt_1; [L350] tmp_ndt_1 = __VERIFIER_nondet_int() [L351] COND FALSE !(tmp_ndt_1 == 0) [L354] int tmp_ndt_2; [L355] tmp_ndt_2 = __VERIFIER_nondet_int() [L356] COND FALSE !(tmp_ndt_2 == 1) [L359] int tmp_ndt_3; [L360] tmp_ndt_3 = __VERIFIER_nondet_int() [L361] COND TRUE tmp_ndt_3 == 3 [L388] CALL, EXPR KbFilter_PnP(devobj, pirp) [L80] int devExt ; [L81] int irpStack ; [L82] int status ; [L83] int event = __VERIFIER_nondet_int() ; [L84] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L85] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L86] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L87] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L88] int devExt__Started ; [L89] int devExt__Removed ; [L90] int devExt__SurpriseRemoved ; [L91] int Irp__IoStatus__Status ; [L92] int Irp__IoStatus__Information ; [L93] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L94] int irpSp ; [L95] int nextIrpSp ; [L96] int nextIrpSp__Control ; [L97] int irpSp___0 ; [L98] int irpSp__Context ; [L99] int irpSp__Control ; [L100] long __cil_tmp23 ; [L103] status = 0 [L104] devExt = DeviceObject__DeviceExtension [L105] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L106] COND FALSE !(irpStack__MinorFunction == 0) [L109] COND FALSE !(irpStack__MinorFunction == 23) [L112] COND TRUE irpStack__MinorFunction == 2 [L236] devExt__Removed = 1 [L237] COND TRUE s == NP [L238] s = SKIP1 [L245] Irp__CurrentLocation ++ [L246] Irp__Tail__Overlay__CurrentStackLocation ++ [L247] CALL IofCallDriver(devExt__TopOfStack, Irp) [L483] int returnVal2 ; [L484] int compRetStatus ; [L485] int lcontext = __VERIFIER_nondet_int() ; [L486] long long __cil_tmp7 ; [L489] COND FALSE !(\read(compRegistered)) [L502] int tmp_ndt_6; [L503] tmp_ndt_6 = __VERIFIER_nondet_int() [L504] COND FALSE !(tmp_ndt_6 == 0) [L507] int tmp_ndt_7; [L508] tmp_ndt_7 = __VERIFIER_nondet_int() [L509] COND TRUE tmp_ndt_7 == 1 [L518] returnVal2 = -1073741823 [L528] COND FALSE !(s == NP) [L532] COND FALSE !(s == MPR1) [L541] COND TRUE s == SKIP1 [L542] s = SKIP2 [L543] lowerDriverReturn = returnVal2 [L551] return (returnVal2); [L247] RET IofCallDriver(devExt__TopOfStack, Irp) [L248] status = 0 [L290] return (status); [L388] RET, EXPR KbFilter_PnP(devobj, pirp) [L388] status = KbFilter_PnP(devobj, pirp) [L412] COND FALSE !(pended == 1) [L420] COND FALSE !(pended == 1) [L428] COND TRUE s != UNLOADED [L429] COND TRUE status != -1 [L430] COND FALSE !(s != SKIP2) [L440] COND FALSE !(pended == 1) [L447] COND FALSE !(s == DC) [L452] COND TRUE status != lowerDriverReturn [L453] CALL errorFn() [L1013] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 19 procedures, 243 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.8s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9173 SdHoareTripleChecker+Valid, 9.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9153 mSDsluCounter, 11726 SdHoareTripleChecker+Invalid, 8.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6852 mSDsCounter, 1761 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15217 IncrementalHoareTripleChecker+Invalid, 16978 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1761 mSolverCounterUnsat, 4874 mSDtfsCounter, 15217 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 20 MinimizatonAttempts, 231 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-19 13:15:25,900 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...