/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 21:01:41,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 21:01:41,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 21:01:41,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 21:01:41,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 21:01:41,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 21:01:41,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 21:01:41,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 21:01:41,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 21:01:41,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 21:01:41,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 21:01:41,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 21:01:41,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 21:01:41,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 21:01:41,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 21:01:41,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 21:01:41,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 21:01:41,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 21:01:41,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 21:01:41,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 21:01:41,268 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 21:01:41,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 21:01:41,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 21:01:41,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 21:01:41,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 21:01:41,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 21:01:41,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 21:01:41,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 21:01:41,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 21:01:41,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 21:01:41,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 21:01:41,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 21:01:41,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 21:01:41,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 21:01:41,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 21:01:41,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 21:01:41,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 21:01:41,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 21:01:41,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 21:01:41,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 21:01:41,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 21:01:41,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 21:01:41,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 21:01:41,301 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 21:01:41,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 21:01:41,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 21:01:41,302 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 21:01:41,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 21:01:41,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 21:01:41,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 21:01:41,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 21:01:41,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 21:01:41,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 21:01:41,303 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 21:01:41,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 21:01:41,304 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 21:01:41,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 21:01:41,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 21:01:41,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 21:01:41,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 21:01:41,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 21:01:41,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:01:41,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 21:01:41,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 21:01:41,306 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 21:01:41,306 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 21:01:41,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 21:01:41,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 21:01:41,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 21:01:41,531 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 21:01:41,533 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 21:01:41,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-18 21:01:41,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ebdb7d14/fe6ce24f5c6b4b0983bb7d7fc55c99d2/FLAG087d08e34 [2022-03-18 21:01:41,949 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 21:01:41,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-18 21:01:41,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ebdb7d14/fe6ce24f5c6b4b0983bb7d7fc55c99d2/FLAG087d08e34 [2022-03-18 21:01:41,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ebdb7d14/fe6ce24f5c6b4b0983bb7d7fc55c99d2 [2022-03-18 21:01:41,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 21:01:41,971 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 21:01:41,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 21:01:41,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 21:01:41,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 21:01:41,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:01:41" (1/1) ... [2022-03-18 21:01:41,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313681fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:41, skipping insertion in model container [2022-03-18 21:01:41,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:01:41" (1/1) ... [2022-03-18 21:01:41,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 21:01:42,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 21:01:42,153 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/diskperf_simpl1.cil.c[2072,2085] [2022-03-18 21:01:42,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:01:42,235 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 21:01:42,244 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/diskperf_simpl1.cil.c[2072,2085] [2022-03-18 21:01:42,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:01:42,289 INFO L208 MainTranslator]: Completed translation [2022-03-18 21:01:42,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:42 WrapperNode [2022-03-18 21:01:42,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 21:01:42,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 21:01:42,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 21:01:42,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 21:01:42,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:42" (1/1) ... [2022-03-18 21:01:42,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:42" (1/1) ... [2022-03-18 21:01:42,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:42" (1/1) ... [2022-03-18 21:01:42,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:42" (1/1) ... [2022-03-18 21:01:42,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:42" (1/1) ... [2022-03-18 21:01:42,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:42" (1/1) ... [2022-03-18 21:01:42,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:42" (1/1) ... [2022-03-18 21:01:42,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 21:01:42,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 21:01:42,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 21:01:42,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 21:01:42,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:42" (1/1) ... [2022-03-18 21:01:42,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:01:42,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:01:42,379 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) [2022-03-18 21:01:42,380 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 [2022-03-18 21:01:42,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 21:01:42,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 21:01:42,403 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 21:01:42,403 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-18 21:01:42,403 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-18 21:01:42,403 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2022-03-18 21:01:42,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-18 21:01:42,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 21:01:42,405 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-18 21:01:42,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-18 21:01:42,405 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-18 21:01:42,405 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-18 21:01:42,405 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-18 21:01:42,405 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-18 21:01:42,405 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-18 21:01:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 21:01:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 21:01:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 21:01:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 21:01:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-18 21:01:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-18 21:01:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 21:01:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 21:01:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 21:01:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 21:01:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 21:01:42,581 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 21:01:42,582 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 21:01:42,622 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:01:42,725 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-18 21:01:42,725 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-18 21:01:42,730 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:01:42,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-18 21:01:42,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-18 21:01:42,776 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:01:42,786 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-18 21:01:42,786 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-18 21:01:42,790 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:01:42,809 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-18 21:01:42,809 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-18 21:01:42,984 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:01:43,019 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-18 21:01:43,020 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-18 21:01:43,038 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-18 21:01:43,045 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-18 21:01:43,045 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-18 21:01:43,080 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 21:01:43,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 21:01:43,094 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 21:01:43,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:01:43 BoogieIcfgContainer [2022-03-18 21:01:43,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 21:01:43,097 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 21:01:43,098 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 21:01:43,099 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 21:01:43,101 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:01:43" (1/1) ... [2022-03-18 21:01:43,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:01:43 BasicIcfg [2022-03-18 21:01:43,158 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 21:01:43,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 21:01:43,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 21:01:43,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 21:01:43,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 09:01:41" (1/4) ... [2022-03-18 21:01:43,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfc880a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:01:43, skipping insertion in model container [2022-03-18 21:01:43,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:01:42" (2/4) ... [2022-03-18 21:01:43,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfc880a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:01:43, skipping insertion in model container [2022-03-18 21:01:43,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:01:43" (3/4) ... [2022-03-18 21:01:43,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfc880a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:01:43, skipping insertion in model container [2022-03-18 21:01:43,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:01:43" (4/4) ... [2022-03-18 21:01:43,168 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.cJordan [2022-03-18 21:01:43,172 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 21:01:43,172 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 21:01:43,216 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 21:01:43,223 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 21:01:43,223 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 21:01:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 206 states have (on average 1.4271844660194175) internal successors, (294), 224 states have internal predecessors, (294), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2022-03-18 21:01:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-18 21:01:43,271 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:43,272 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] [2022-03-18 21:01:43,272 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash 13220813, now seen corresponding path program 1 times [2022-03-18 21:01:43,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:43,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813846096] [2022-03-18 21:01:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:43,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:43,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:43,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:43,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813846096] [2022-03-18 21:01:43,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813846096] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:43,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:43,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 21:01:43,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159575294] [2022-03-18 21:01:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:43,607 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 21:01:43,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:43,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 21:01:43,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-18 21:01:43,628 INFO L87 Difference]: Start difference. First operand has 295 states, 206 states have (on average 1.4271844660194175) internal successors, (294), 224 states have internal predecessors, (294), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 21:01:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:44,296 INFO L93 Difference]: Finished difference Result 342 states and 472 transitions. [2022-03-18 21:01:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 21:01:44,298 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), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-03-18 21:01:44,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:44,306 INFO L225 Difference]: With dead ends: 342 [2022-03-18 21:01:44,306 INFO L226 Difference]: Without dead ends: 326 [2022-03-18 21:01:44,307 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:01:44,309 INFO L912 BasicCegarLoop]: 355 mSDtfsCounter, 234 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:44,310 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 597 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:01:44,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-18 21:01:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2022-03-18 21:01:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 201 states have (on average 1.373134328358209) internal successors, (276), 217 states have internal predecessors, (276), 61 states have call successors, (61), 26 states have call predecessors, (61), 24 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-03-18 21:01:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2022-03-18 21:01:44,351 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 20 [2022-03-18 21:01:44,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:44,351 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2022-03-18 21:01:44,352 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), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 21:01:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2022-03-18 21:01:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-18 21:01:44,353 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:44,353 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] [2022-03-18 21:01:44,353 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 21:01:44,353 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash 690648180, now seen corresponding path program 1 times [2022-03-18 21:01:44,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:44,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422883393] [2022-03-18 21:01:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:44,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:44,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:44,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:44,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:44,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422883393] [2022-03-18 21:01:44,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422883393] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:44,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:44,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:01:44,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343072094] [2022-03-18 21:01:44,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:44,493 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:01:44,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:44,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:01:44,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:01:44,494 INFO L87 Difference]: Start difference. First operand 287 states and 383 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-03-18 21:01:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:45,848 INFO L93 Difference]: Finished difference Result 508 states and 702 transitions. [2022-03-18 21:01:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 21:01:45,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 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 25 [2022-03-18 21:01:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:45,852 INFO L225 Difference]: With dead ends: 508 [2022-03-18 21:01:45,852 INFO L226 Difference]: Without dead ends: 507 [2022-03-18 21:01:45,852 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 [2022-03-18 21:01:45,853 INFO L912 BasicCegarLoop]: 490 mSDtfsCounter, 428 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:45,854 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 716 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 21:01:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-03-18 21:01:45,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2022-03-18 21:01:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 318 states have (on average 1.3459119496855345) internal successors, (428), 329 states have internal predecessors, (428), 80 states have call successors, (80), 37 states have call predecessors, (80), 41 states have return successors, (100), 77 states have call predecessors, (100), 68 states have call successors, (100) [2022-03-18 21:01:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2022-03-18 21:01:45,880 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 25 [2022-03-18 21:01:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:45,881 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2022-03-18 21:01:45,881 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-03-18 21:01:45,881 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2022-03-18 21:01:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 21:01:45,882 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:45,882 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] [2022-03-18 21:01:45,882 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 21:01:45,882 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:45,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:45,883 INFO L85 PathProgramCache]: Analyzing trace with hash 543429165, now seen corresponding path program 1 times [2022-03-18 21:01:45,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:45,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306428333] [2022-03-18 21:01:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:45,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:46,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:46,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:46,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:46,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306428333] [2022-03-18 21:01:46,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306428333] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:46,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:46,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:01:46,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889013264] [2022-03-18 21:01:46,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:46,056 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:01:46,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:46,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:01:46,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:01:46,057 INFO L87 Difference]: Start difference. First operand 440 states and 608 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:01:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:46,900 INFO L93 Difference]: Finished difference Result 690 states and 979 transitions. [2022-03-18 21:01:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 21:01:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-03-18 21:01:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:46,910 INFO L225 Difference]: With dead ends: 690 [2022-03-18 21:01:46,911 INFO L226 Difference]: Without dead ends: 690 [2022-03-18 21:01:46,911 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:01:46,916 INFO L912 BasicCegarLoop]: 402 mSDtfsCounter, 501 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:46,918 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 610 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 21:01:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-18 21:01:46,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 618. [2022-03-18 21:01:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 455 states have (on average 1.3560439560439561) internal successors, (617), 466 states have internal predecessors, (617), 109 states have call successors, (109), 49 states have call predecessors, (109), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2022-03-18 21:01:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 888 transitions. [2022-03-18 21:01:46,957 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 888 transitions. Word has length 31 [2022-03-18 21:01:46,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:46,958 INFO L478 AbstractCegarLoop]: Abstraction has 618 states and 888 transitions. [2022-03-18 21:01:46,958 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:01:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 888 transitions. [2022-03-18 21:01:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-18 21:01:46,964 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:46,964 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] [2022-03-18 21:01:46,964 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 21:01:46,964 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:46,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:46,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1394943520, now seen corresponding path program 1 times [2022-03-18 21:01:46,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:46,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969682400] [2022-03-18 21:01:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:46,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:47,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:47,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:47,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969682400] [2022-03-18 21:01:47,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969682400] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:47,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:47,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:01:47,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682438621] [2022-03-18 21:01:47,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:47,093 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:01:47,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:47,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:01:47,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:01:47,093 INFO L87 Difference]: Start difference. First operand 618 states and 888 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:01:47,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:47,689 INFO L93 Difference]: Finished difference Result 661 states and 947 transitions. [2022-03-18 21:01:47,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 21:01:47,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-03-18 21:01:47,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:47,692 INFO L225 Difference]: With dead ends: 661 [2022-03-18 21:01:47,692 INFO L226 Difference]: Without dead ends: 661 [2022-03-18 21:01:47,692 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 [2022-03-18 21:01:47,693 INFO L912 BasicCegarLoop]: 340 mSDtfsCounter, 224 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:47,693 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 589 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:01:47,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-03-18 21:01:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 628. [2022-03-18 21:01:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 466 states have (on average 1.354077253218884) internal successors, (631), 475 states have internal predecessors, (631), 108 states have call successors, (108), 50 states have call predecessors, (108), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2022-03-18 21:01:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2022-03-18 21:01:47,711 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 36 [2022-03-18 21:01:47,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:47,711 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2022-03-18 21:01:47,711 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:01:47,711 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2022-03-18 21:01:47,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-18 21:01:47,712 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:47,712 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] [2022-03-18 21:01:47,712 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-18 21:01:47,713 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:47,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash -455202915, now seen corresponding path program 1 times [2022-03-18 21:01:47,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:47,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574030005] [2022-03-18 21:01:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:47,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:47,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:47,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:47,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:47,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 21:01:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:47,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:01:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:47,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:47,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574030005] [2022-03-18 21:01:47,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574030005] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:47,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:47,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 21:01:47,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794885205] [2022-03-18 21:01:47,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:47,825 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 21:01:47,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:47,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 21:01:47,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:01:47,825 INFO L87 Difference]: Start difference. First operand 628 states and 901 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 21:01:48,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:48,238 INFO L93 Difference]: Finished difference Result 705 states and 1001 transitions. [2022-03-18 21:01:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 21:01:48,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2022-03-18 21:01:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:48,241 INFO L225 Difference]: With dead ends: 705 [2022-03-18 21:01:48,241 INFO L226 Difference]: Without dead ends: 705 [2022-03-18 21:01:48,241 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:01:48,242 INFO L912 BasicCegarLoop]: 320 mSDtfsCounter, 415 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:48,242 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 621 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:01:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-18 21:01:48,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-18 21:01:48,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.3504098360655739) internal successors, (659), 502 states have internal predecessors, (659), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-03-18 21:01:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 937 transitions. [2022-03-18 21:01:48,258 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 937 transitions. Word has length 39 [2022-03-18 21:01:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:48,258 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 937 transitions. [2022-03-18 21:01:48,258 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 21:01:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 937 transitions. [2022-03-18 21:01:48,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-18 21:01:48,259 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:48,259 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] [2022-03-18 21:01:48,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 21:01:48,259 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:48,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash -454217859, now seen corresponding path program 1 times [2022-03-18 21:01:48,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:48,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315905290] [2022-03-18 21:01:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:48,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:48,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:48,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:48,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 21:01:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:01:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:48,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:48,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315905290] [2022-03-18 21:01:48,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315905290] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:48,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:48,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:01:48,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118588638] [2022-03-18 21:01:48,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:48,439 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:01:48,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:01:48,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:01:48,440 INFO L87 Difference]: Start difference. First operand 658 states and 937 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 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) [2022-03-18 21:01:49,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:49,504 INFO L93 Difference]: Finished difference Result 705 states and 1000 transitions. [2022-03-18 21:01:49,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:01:49,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 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 39 [2022-03-18 21:01:49,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:49,507 INFO L225 Difference]: With dead ends: 705 [2022-03-18 21:01:49,507 INFO L226 Difference]: Without dead ends: 705 [2022-03-18 21:01:49,507 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-03-18 21:01:49,508 INFO L912 BasicCegarLoop]: 302 mSDtfsCounter, 559 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:49,508 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 760 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 21:01:49,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-18 21:01:49,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-18 21:01:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.348360655737705) internal successors, (658), 502 states have internal predecessors, (658), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-03-18 21:01:49,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 936 transitions. [2022-03-18 21:01:49,522 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 936 transitions. Word has length 39 [2022-03-18 21:01:49,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:49,522 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 936 transitions. [2022-03-18 21:01:49,523 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 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) [2022-03-18 21:01:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 936 transitions. [2022-03-18 21:01:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 21:01:49,523 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:49,523 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] [2022-03-18 21:01:49,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-18 21:01:49,524 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:49,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:49,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1225775968, now seen corresponding path program 1 times [2022-03-18 21:01:49,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:49,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049599598] [2022-03-18 21:01:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:49,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 21:01:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:01:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:49,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:49,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049599598] [2022-03-18 21:01:49,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049599598] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:49,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:49,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:01:49,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812862724] [2022-03-18 21:01:49,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:49,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:01:49,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:01:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:01:49,684 INFO L87 Difference]: Start difference. First operand 658 states and 936 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 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) [2022-03-18 21:01:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:50,665 INFO L93 Difference]: Finished difference Result 705 states and 999 transitions. [2022-03-18 21:01:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:01:50,665 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 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 40 [2022-03-18 21:01:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:50,668 INFO L225 Difference]: With dead ends: 705 [2022-03-18 21:01:50,668 INFO L226 Difference]: Without dead ends: 705 [2022-03-18 21:01:50,668 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-03-18 21:01:50,670 INFO L912 BasicCegarLoop]: 303 mSDtfsCounter, 1133 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:50,671 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 865 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 21:01:50,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-18 21:01:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-18 21:01:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.346311475409836) internal successors, (657), 502 states have internal predecessors, (657), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-03-18 21:01:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2022-03-18 21:01:50,684 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 40 [2022-03-18 21:01:50,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:50,684 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2022-03-18 21:01:50,685 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 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) [2022-03-18 21:01:50,685 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2022-03-18 21:01:50,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-18 21:01:50,686 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:50,686 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] [2022-03-18 21:01:50,686 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-18 21:01:50,686 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:50,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:50,687 INFO L85 PathProgramCache]: Analyzing trace with hash 636808681, now seen corresponding path program 1 times [2022-03-18 21:01:50,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:50,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250431185] [2022-03-18 21:01:50,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:50,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:50,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:50,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:50,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 21:01:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:50,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:01:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:50,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:50,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250431185] [2022-03-18 21:01:50,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250431185] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:50,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:50,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 21:01:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111525018] [2022-03-18 21:01:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:50,805 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 21:01:50,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 21:01:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:01:50,805 INFO L87 Difference]: Start difference. First operand 658 states and 935 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-03-18 21:01:51,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:51,320 INFO L93 Difference]: Finished difference Result 1186 states and 1741 transitions. [2022-03-18 21:01:51,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:01:51,320 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 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 41 [2022-03-18 21:01:51,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:51,326 INFO L225 Difference]: With dead ends: 1186 [2022-03-18 21:01:51,326 INFO L226 Difference]: Without dead ends: 1186 [2022-03-18 21:01:51,326 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-18 21:01:51,326 INFO L912 BasicCegarLoop]: 392 mSDtfsCounter, 749 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:51,327 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 719 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:01:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-18 21:01:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-03-18 21:01:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 817 states have (on average 1.3635250917992656) internal successors, (1114), 835 states have internal predecessors, (1114), 173 states have call successors, (173), 79 states have call predecessors, (173), 94 states have return successors, (315), 175 states have call predecessors, (315), 163 states have call successors, (315) [2022-03-18 21:01:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1602 transitions. [2022-03-18 21:01:51,351 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1602 transitions. Word has length 41 [2022-03-18 21:01:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:51,352 INFO L478 AbstractCegarLoop]: Abstraction has 1085 states and 1602 transitions. [2022-03-18 21:01:51,352 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-03-18 21:01:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1602 transitions. [2022-03-18 21:01:51,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-18 21:01:51,353 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:51,354 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] [2022-03-18 21:01:51,354 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-18 21:01:51,354 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:51,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:51,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1732782333, now seen corresponding path program 1 times [2022-03-18 21:01:51,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:51,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391835882] [2022-03-18 21:01:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:51,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:51,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:51,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:51,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:51,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-18 21:01:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:01:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:51,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:51,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391835882] [2022-03-18 21:01:51,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391835882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:51,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:51,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 21:01:51,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489694873] [2022-03-18 21:01:51,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:51,476 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 21:01:51,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:51,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 21:01:51,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:01:51,477 INFO L87 Difference]: Start difference. First operand 1085 states and 1602 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 21:01:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:52,356 INFO L93 Difference]: Finished difference Result 1167 states and 1721 transitions. [2022-03-18 21:01:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:01:52,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2022-03-18 21:01:52,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:52,370 INFO L225 Difference]: With dead ends: 1167 [2022-03-18 21:01:52,371 INFO L226 Difference]: Without dead ends: 1148 [2022-03-18 21:01:52,371 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:01:52,373 INFO L912 BasicCegarLoop]: 327 mSDtfsCounter, 133 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:52,373 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 1134 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 21:01:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-18 21:01:52,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1078. [2022-03-18 21:01:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 813 states have (on average 1.3640836408364083) internal successors, (1109), 831 states have internal predecessors, (1109), 171 states have call successors, (171), 78 states have call predecessors, (171), 93 states have return successors, (313), 173 states have call predecessors, (313), 161 states have call successors, (313) [2022-03-18 21:01:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1593 transitions. [2022-03-18 21:01:52,405 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1593 transitions. Word has length 42 [2022-03-18 21:01:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:52,405 INFO L478 AbstractCegarLoop]: Abstraction has 1078 states and 1593 transitions. [2022-03-18 21:01:52,405 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 21:01:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1593 transitions. [2022-03-18 21:01:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-18 21:01:52,406 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:52,406 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:01:52,406 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-18 21:01:52,406 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:52,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1415168827, now seen corresponding path program 1 times [2022-03-18 21:01:52,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:52,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642895978] [2022-03-18 21:01:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:52,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:52,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:52,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:52,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642895978] [2022-03-18 21:01:52,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642895978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:52,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:52,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:01:52,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822549624] [2022-03-18 21:01:52,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:52,494 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:01:52,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:01:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:01:52,495 INFO L87 Difference]: Start difference. First operand 1078 states and 1593 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:01:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:52,836 INFO L93 Difference]: Finished difference Result 599 states and 851 transitions. [2022-03-18 21:01:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 21:01:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-03-18 21:01:52,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:52,839 INFO L225 Difference]: With dead ends: 599 [2022-03-18 21:01:52,839 INFO L226 Difference]: Without dead ends: 599 [2022-03-18 21:01:52,840 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:01:52,840 INFO L912 BasicCegarLoop]: 281 mSDtfsCounter, 446 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:52,841 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 311 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:01:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-03-18 21:01:52,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 598. [2022-03-18 21:01:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 443 states have (on average 1.327313769751693) internal successors, (588), 455 states have internal predecessors, (588), 102 states have call successors, (102), 47 states have call predecessors, (102), 52 states have return successors, (160), 98 states have call predecessors, (160), 94 states have call successors, (160) [2022-03-18 21:01:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 850 transitions. [2022-03-18 21:01:52,852 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 850 transitions. Word has length 45 [2022-03-18 21:01:52,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:52,853 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 850 transitions. [2022-03-18 21:01:52,853 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-18 21:01:52,853 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 850 transitions. [2022-03-18 21:01:52,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-18 21:01:52,853 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:52,853 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] [2022-03-18 21:01:52,854 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-18 21:01:52,854 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1870236117, now seen corresponding path program 1 times [2022-03-18 21:01:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:52,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058074678] [2022-03-18 21:01:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:52,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:52,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:52,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 21:01:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:53,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:01:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:53,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:53,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058074678] [2022-03-18 21:01:53,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058074678] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:53,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:53,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 21:01:53,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112059450] [2022-03-18 21:01:53,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:53,038 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 21:01:53,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:53,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 21:01:53,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-18 21:01:53,038 INFO L87 Difference]: Start difference. First operand 598 states and 850 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:01:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:53,831 INFO L93 Difference]: Finished difference Result 630 states and 890 transitions. [2022-03-18 21:01:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 21:01:53,832 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-03-18 21:01:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:53,834 INFO L225 Difference]: With dead ends: 630 [2022-03-18 21:01:53,834 INFO L226 Difference]: Without dead ends: 608 [2022-03-18 21:01:53,834 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-18 21:01:53,835 INFO L912 BasicCegarLoop]: 293 mSDtfsCounter, 112 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:53,835 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1208 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 21:01:53,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-03-18 21:01:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2022-03-18 21:01:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 442 states have (on average 1.3235294117647058) internal successors, (585), 454 states have internal predecessors, (585), 101 states have call successors, (101), 47 states have call predecessors, (101), 52 states have return successors, (159), 97 states have call predecessors, (159), 93 states have call successors, (159) [2022-03-18 21:01:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 845 transitions. [2022-03-18 21:01:53,846 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 845 transitions. Word has length 46 [2022-03-18 21:01:53,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:53,846 INFO L478 AbstractCegarLoop]: Abstraction has 596 states and 845 transitions. [2022-03-18 21:01:53,847 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:01:53,847 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 845 transitions. [2022-03-18 21:01:53,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-18 21:01:53,847 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:53,847 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] [2022-03-18 21:01:53,847 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-18 21:01:53,847 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:53,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:53,848 INFO L85 PathProgramCache]: Analyzing trace with hash -961233056, now seen corresponding path program 1 times [2022-03-18 21:01:53,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:53,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780542960] [2022-03-18 21:01:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:53,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:53,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 21:01:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:01:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:53,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:53,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780542960] [2022-03-18 21:01:53,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780542960] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:53,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:53,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 21:01:53,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889252974] [2022-03-18 21:01:53,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:53,982 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 21:01:53,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:53,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 21:01:53,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:01:53,983 INFO L87 Difference]: Start difference. First operand 596 states and 845 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 21:01:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:54,485 INFO L93 Difference]: Finished difference Result 826 states and 1225 transitions. [2022-03-18 21:01:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 21:01:54,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-03-18 21:01:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:54,489 INFO L225 Difference]: With dead ends: 826 [2022-03-18 21:01:54,489 INFO L226 Difference]: Without dead ends: 826 [2022-03-18 21:01:54,489 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:01:54,490 INFO L912 BasicCegarLoop]: 324 mSDtfsCounter, 520 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:54,490 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 636 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:01:54,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-03-18 21:01:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 665. [2022-03-18 21:01:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 495 states have (on average 1.3232323232323233) internal successors, (655), 508 states have internal predecessors, (655), 109 states have call successors, (109), 50 states have call predecessors, (109), 60 states have return successors, (184), 110 states have call predecessors, (184), 101 states have call successors, (184) [2022-03-18 21:01:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 948 transitions. [2022-03-18 21:01:54,526 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 948 transitions. Word has length 46 [2022-03-18 21:01:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:54,527 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 948 transitions. [2022-03-18 21:01:54,527 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 21:01:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 948 transitions. [2022-03-18 21:01:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-18 21:01:54,528 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:54,528 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] [2022-03-18 21:01:54,528 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-18 21:01:54,528 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash -91170375, now seen corresponding path program 1 times [2022-03-18 21:01:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:54,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149350045] [2022-03-18 21:01:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:54,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:54,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 21:01:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:54,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:54,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149350045] [2022-03-18 21:01:54,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149350045] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:54,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:54,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 21:01:54,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734077117] [2022-03-18 21:01:54,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:54,629 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 21:01:54,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:54,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 21:01:54,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:01:54,629 INFO L87 Difference]: Start difference. First operand 665 states and 948 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 21:01:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:55,277 INFO L93 Difference]: Finished difference Result 462 states and 599 transitions. [2022-03-18 21:01:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 21:01:55,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-03-18 21:01:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:55,279 INFO L225 Difference]: With dead ends: 462 [2022-03-18 21:01:55,279 INFO L226 Difference]: Without dead ends: 462 [2022-03-18 21:01:55,280 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:01:55,280 INFO L912 BasicCegarLoop]: 314 mSDtfsCounter, 471 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:55,280 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 677 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:01:55,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-03-18 21:01:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2022-03-18 21:01:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 327 states have (on average 1.27217125382263) internal successors, (416), 338 states have internal predecessors, (416), 69 states have call successors, (69), 38 states have call predecessors, (69), 44 states have return successors, (93), 68 states have call predecessors, (93), 61 states have call successors, (93) [2022-03-18 21:01:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 578 transitions. [2022-03-18 21:01:55,288 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 578 transitions. Word has length 49 [2022-03-18 21:01:55,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:55,289 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 578 transitions. [2022-03-18 21:01:55,289 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-18 21:01:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 578 transitions. [2022-03-18 21:01:55,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-18 21:01:55,290 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:55,290 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] [2022-03-18 21:01:55,290 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-18 21:01:55,290 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:55,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:55,291 INFO L85 PathProgramCache]: Analyzing trace with hash 298099852, now seen corresponding path program 1 times [2022-03-18 21:01:55,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:55,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527935499] [2022-03-18 21:01:55,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:55,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 21:01:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:01:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:55,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:55,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527935499] [2022-03-18 21:01:55,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527935499] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:55,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:55,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 21:01:55,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509581989] [2022-03-18 21:01:55,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:55,475 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 21:01:55,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:55,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 21:01:55,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:01:55,475 INFO L87 Difference]: Start difference. First operand 441 states and 578 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-03-18 21:01:56,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:56,260 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2022-03-18 21:01:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:01:56,260 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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 47 [2022-03-18 21:01:56,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:56,262 INFO L225 Difference]: With dead ends: 454 [2022-03-18 21:01:56,262 INFO L226 Difference]: Without dead ends: 453 [2022-03-18 21:01:56,262 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-18 21:01:56,263 INFO L912 BasicCegarLoop]: 284 mSDtfsCounter, 235 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:56,263 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1488 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 21:01:56,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-18 21:01:56,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2022-03-18 21:01:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 334 states have (on average 1.2724550898203593) internal successors, (425), 346 states have internal predecessors, (425), 70 states have call successors, (70), 38 states have call predecessors, (70), 44 states have return successors, (94), 69 states have call predecessors, (94), 62 states have call successors, (94) [2022-03-18 21:01:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 589 transitions. [2022-03-18 21:01:56,271 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 589 transitions. Word has length 47 [2022-03-18 21:01:56,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:56,271 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 589 transitions. [2022-03-18 21:01:56,271 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-03-18 21:01:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 589 transitions. [2022-03-18 21:01:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-18 21:01:56,273 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:56,273 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] [2022-03-18 21:01:56,273 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-18 21:01:56,273 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash 298068108, now seen corresponding path program 1 times [2022-03-18 21:01:56,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:56,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764971045] [2022-03-18 21:01:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:56,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:56,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 21:01:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:56,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:01:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:56,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:56,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764971045] [2022-03-18 21:01:56,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764971045] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:56,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:56,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 21:01:56,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606494231] [2022-03-18 21:01:56,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:56,454 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 21:01:56,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:56,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 21:01:56,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:01:56,454 INFO L87 Difference]: Start difference. First operand 449 states and 589 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-03-18 21:01:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:57,035 INFO L93 Difference]: Finished difference Result 487 states and 652 transitions. [2022-03-18 21:01:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 21:01:57,035 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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 47 [2022-03-18 21:01:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:57,037 INFO L225 Difference]: With dead ends: 487 [2022-03-18 21:01:57,037 INFO L226 Difference]: Without dead ends: 472 [2022-03-18 21:01:57,037 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-18 21:01:57,037 INFO L912 BasicCegarLoop]: 286 mSDtfsCounter, 338 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:57,038 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 1475 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:01:57,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-03-18 21:01:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2022-03-18 21:01:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 343 states have (on average 1.2769679300291545) internal successors, (438), 356 states have internal predecessors, (438), 70 states have call successors, (70), 38 states have call predecessors, (70), 45 states have return successors, (96), 69 states have call predecessors, (96), 62 states have call successors, (96) [2022-03-18 21:01:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2022-03-18 21:01:57,045 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 47 [2022-03-18 21:01:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:57,045 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2022-03-18 21:01:57,046 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 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) [2022-03-18 21:01:57,046 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2022-03-18 21:01:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-18 21:01:57,047 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:57,047 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] [2022-03-18 21:01:57,047 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-18 21:01:57,047 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash -309998534, now seen corresponding path program 1 times [2022-03-18 21:01:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:57,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76700086] [2022-03-18 21:01:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:57,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:57,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:57,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:57,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 21:01:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:57,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:01:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:57,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:57,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76700086] [2022-03-18 21:01:57,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76700086] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:57,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:57,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 21:01:57,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519515375] [2022-03-18 21:01:57,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:57,248 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 21:01:57,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 21:01:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:01:57,248 INFO L87 Difference]: Start difference. First operand 459 states and 604 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:01:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:58,457 INFO L93 Difference]: Finished difference Result 590 states and 807 transitions. [2022-03-18 21:01:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-18 21:01:58,458 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2022-03-18 21:01:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:58,459 INFO L225 Difference]: With dead ends: 590 [2022-03-18 21:01:58,459 INFO L226 Difference]: Without dead ends: 575 [2022-03-18 21:01:58,460 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:01:58,460 INFO L912 BasicCegarLoop]: 315 mSDtfsCounter, 847 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:58,460 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 798 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 21:01:58,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-18 21:01:58,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 444. [2022-03-18 21:01:58,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 332 states have (on average 1.2771084337349397) internal successors, (424), 343 states have internal predecessors, (424), 68 states have call successors, (68), 38 states have call predecessors, (68), 43 states have return successors, (91), 66 states have call predecessors, (91), 60 states have call successors, (91) [2022-03-18 21:01:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 583 transitions. [2022-03-18 21:01:58,468 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 583 transitions. Word has length 48 [2022-03-18 21:01:58,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:58,469 INFO L478 AbstractCegarLoop]: Abstraction has 444 states and 583 transitions. [2022-03-18 21:01:58,469 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:01:58,469 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 583 transitions. [2022-03-18 21:01:58,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-18 21:01:58,469 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:58,469 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] [2022-03-18 21:01:58,469 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-18 21:01:58,469 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:58,470 INFO L85 PathProgramCache]: Analyzing trace with hash 328516868, now seen corresponding path program 1 times [2022-03-18 21:01:58,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:58,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169587893] [2022-03-18 21:01:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:58,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:58,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:58,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-18 21:01:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:58,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:01:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:58,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:58,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169587893] [2022-03-18 21:01:58,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169587893] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:58,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:58,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:01:58,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049197933] [2022-03-18 21:01:58,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:58,589 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:01:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:58,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:01:58,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:01:58,589 INFO L87 Difference]: Start difference. First operand 444 states and 583 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 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) [2022-03-18 21:01:59,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:59,168 INFO L93 Difference]: Finished difference Result 455 states and 596 transitions. [2022-03-18 21:01:59,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:01:59,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 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 49 [2022-03-18 21:01:59,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:59,170 INFO L225 Difference]: With dead ends: 455 [2022-03-18 21:01:59,170 INFO L226 Difference]: Without dead ends: 427 [2022-03-18 21:01:59,170 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 [2022-03-18 21:01:59,171 INFO L912 BasicCegarLoop]: 289 mSDtfsCounter, 160 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:59,171 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 1515 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:01:59,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-18 21:01:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-03-18 21:01:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 318 states have (on average 1.279874213836478) internal successors, (407), 330 states have internal predecessors, (407), 66 states have call successors, (66), 36 states have call predecessors, (66), 42 states have return successors, (89), 64 states have call predecessors, (89), 58 states have call successors, (89) [2022-03-18 21:01:59,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 562 transitions. [2022-03-18 21:01:59,178 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 562 transitions. Word has length 49 [2022-03-18 21:01:59,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:59,178 INFO L478 AbstractCegarLoop]: Abstraction has 427 states and 562 transitions. [2022-03-18 21:01:59,178 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 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) [2022-03-18 21:01:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 562 transitions. [2022-03-18 21:01:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 21:01:59,179 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:59,179 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] [2022-03-18 21:01:59,179 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-18 21:01:59,179 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:59,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:59,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1720991068, now seen corresponding path program 1 times [2022-03-18 21:01:59,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:59,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409066307] [2022-03-18 21:01:59,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:59,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:59,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:01:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:01:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-18 21:01:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 21:01:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:01:59,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:01:59,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409066307] [2022-03-18 21:01:59,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409066307] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:01:59,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:01:59,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 21:01:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068985865] [2022-03-18 21:01:59,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:01:59,342 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 21:01:59,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:01:59,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 21:01:59,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-18 21:01:59,342 INFO L87 Difference]: Start difference. First operand 427 states and 562 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:01:59,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:01:59,944 INFO L93 Difference]: Finished difference Result 453 states and 597 transitions. [2022-03-18 21:01:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:01:59,944 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-03-18 21:01:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:01:59,945 INFO L225 Difference]: With dead ends: 453 [2022-03-18 21:01:59,946 INFO L226 Difference]: Without dead ends: 423 [2022-03-18 21:01:59,946 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-18 21:01:59,946 INFO L912 BasicCegarLoop]: 271 mSDtfsCounter, 115 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:01:59,946 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1070 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:01:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-18 21:01:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 409. [2022-03-18 21:01:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 304 states have (on average 1.2861842105263157) internal successors, (391), 316 states have internal predecessors, (391), 64 states have call successors, (64), 34 states have call predecessors, (64), 40 states have return successors, (87), 62 states have call predecessors, (87), 56 states have call successors, (87) [2022-03-18 21:01:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 542 transitions. [2022-03-18 21:01:59,953 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 542 transitions. Word has length 50 [2022-03-18 21:01:59,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:01:59,953 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 542 transitions. [2022-03-18 21:01:59,953 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:01:59,953 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 542 transitions. [2022-03-18 21:01:59,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-18 21:01:59,954 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:01:59,954 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] [2022-03-18 21:01:59,954 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-18 21:01:59,954 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:01:59,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:01:59,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1090499838, now seen corresponding path program 1 times [2022-03-18 21:01:59,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:01:59,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179072665] [2022-03-18 21:01:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:01:59,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:01:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:01:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:01:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:00,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:00,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 21:02:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:00,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:00,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179072665] [2022-03-18 21:02:00,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179072665] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:00,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:00,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-18 21:02:00,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461705300] [2022-03-18 21:02:00,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:00,088 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-18 21:02:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-18 21:02:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-18 21:02:00,089 INFO L87 Difference]: Start difference. First operand 409 states and 542 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 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) [2022-03-18 21:02:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:01,594 INFO L93 Difference]: Finished difference Result 600 states and 867 transitions. [2022-03-18 21:02:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-18 21:02:01,594 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 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 50 [2022-03-18 21:02:01,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:01,596 INFO L225 Difference]: With dead ends: 600 [2022-03-18 21:02:01,596 INFO L226 Difference]: Without dead ends: 600 [2022-03-18 21:02:01,597 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-03-18 21:02:01,597 INFO L912 BasicCegarLoop]: 421 mSDtfsCounter, 629 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:01,597 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 1243 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-18 21:02:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-03-18 21:02:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 534. [2022-03-18 21:02:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 399 states have (on average 1.3433583959899749) internal successors, (536), 410 states have internal predecessors, (536), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-18 21:02:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 769 transitions. [2022-03-18 21:02:01,608 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 769 transitions. Word has length 50 [2022-03-18 21:02:01,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:01,608 INFO L478 AbstractCegarLoop]: Abstraction has 534 states and 769 transitions. [2022-03-18 21:02:01,608 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 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) [2022-03-18 21:02:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 769 transitions. [2022-03-18 21:02:01,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 21:02:01,609 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:01,609 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] [2022-03-18 21:02:01,609 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-18 21:02:01,609 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:01,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:01,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1506717387, now seen corresponding path program 1 times [2022-03-18 21:02:01,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:01,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009964998] [2022-03-18 21:02:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:01,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 21:02:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:01,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:01,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009964998] [2022-03-18 21:02:01,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009964998] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:01,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:01,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-18 21:02:01,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058917878] [2022-03-18 21:02:01,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:01,739 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-18 21:02:01,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:01,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-18 21:02:01,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:02:01,739 INFO L87 Difference]: Start difference. First operand 534 states and 769 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-03-18 21:02:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:02,293 INFO L93 Difference]: Finished difference Result 555 states and 796 transitions. [2022-03-18 21:02:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:02:02,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 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 51 [2022-03-18 21:02:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:02,295 INFO L225 Difference]: With dead ends: 555 [2022-03-18 21:02:02,295 INFO L226 Difference]: Without dead ends: 555 [2022-03-18 21:02:02,296 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-03-18 21:02:02,296 INFO L912 BasicCegarLoop]: 240 mSDtfsCounter, 616 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:02,296 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 735 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:02:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-18 21:02:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 537. [2022-03-18 21:02:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 402 states have (on average 1.3432835820895523) internal successors, (540), 413 states have internal predecessors, (540), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-18 21:02:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 773 transitions. [2022-03-18 21:02:02,305 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 773 transitions. Word has length 51 [2022-03-18 21:02:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:02,305 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 773 transitions. [2022-03-18 21:02:02,305 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-03-18 21:02:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 773 transitions. [2022-03-18 21:02:02,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 21:02:02,306 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:02,306 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] [2022-03-18 21:02:02,306 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-18 21:02:02,306 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1791177556, now seen corresponding path program 1 times [2022-03-18 21:02:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:02,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305443195] [2022-03-18 21:02:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:02,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:02,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:02,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:02,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 21:02:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:02,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:02,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:02,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305443195] [2022-03-18 21:02:02,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305443195] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:02,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:02,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:02,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727751547] [2022-03-18 21:02:02,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:02,447 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:02,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:02,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:02,447 INFO L87 Difference]: Start difference. First operand 537 states and 773 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 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) [2022-03-18 21:02:03,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:03,248 INFO L93 Difference]: Finished difference Result 624 states and 937 transitions. [2022-03-18 21:02:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 21:02:03,249 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 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 [2022-03-18 21:02:03,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:03,251 INFO L225 Difference]: With dead ends: 624 [2022-03-18 21:02:03,251 INFO L226 Difference]: Without dead ends: 624 [2022-03-18 21:02:03,251 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-03-18 21:02:03,251 INFO L912 BasicCegarLoop]: 253 mSDtfsCounter, 491 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:03,252 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 772 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 21:02:03,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-03-18 21:02:03,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 529. [2022-03-18 21:02:03,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3350253807106598) internal successors, (526), 405 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-18 21:02:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 759 transitions. [2022-03-18 21:02:03,262 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 759 transitions. Word has length 51 [2022-03-18 21:02:03,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:03,262 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 759 transitions. [2022-03-18 21:02:03,262 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 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) [2022-03-18 21:02:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 759 transitions. [2022-03-18 21:02:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-18 21:02:03,263 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:03,263 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] [2022-03-18 21:02:03,263 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-18 21:02:03,263 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:03,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:03,263 INFO L85 PathProgramCache]: Analyzing trace with hash -50366668, now seen corresponding path program 1 times [2022-03-18 21:02:03,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:03,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460219041] [2022-03-18 21:02:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:03,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 21:02:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:03,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:03,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460219041] [2022-03-18 21:02:03,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460219041] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:03,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:03,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 21:02:03,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241460577] [2022-03-18 21:02:03,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:03,368 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 21:02:03,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 21:02:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-18 21:02:03,368 INFO L87 Difference]: Start difference. First operand 529 states and 759 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 21:02:03,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:03,777 INFO L93 Difference]: Finished difference Result 701 states and 1080 transitions. [2022-03-18 21:02:03,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 21:02:03,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-18 21:02:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:03,780 INFO L225 Difference]: With dead ends: 701 [2022-03-18 21:02:03,780 INFO L226 Difference]: Without dead ends: 701 [2022-03-18 21:02:03,780 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:03,781 INFO L912 BasicCegarLoop]: 392 mSDtfsCounter, 304 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:03,781 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 728 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:02:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-18 21:02:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 524. [2022-03-18 21:02:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 390 states have (on average 1.3307692307692307) internal successors, (519), 400 states have internal predecessors, (519), 91 states have call successors, (91), 37 states have call predecessors, (91), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-18 21:02:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 751 transitions. [2022-03-18 21:02:03,792 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 751 transitions. Word has length 51 [2022-03-18 21:02:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:03,793 INFO L478 AbstractCegarLoop]: Abstraction has 524 states and 751 transitions. [2022-03-18 21:02:03,793 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-18 21:02:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 751 transitions. [2022-03-18 21:02:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 21:02:03,793 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:03,793 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] [2022-03-18 21:02:03,793 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-18 21:02:03,793 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1529813192, now seen corresponding path program 1 times [2022-03-18 21:02:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:03,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672067299] [2022-03-18 21:02:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:03,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 21:02:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:03,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:03,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672067299] [2022-03-18 21:02:03,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672067299] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:03,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:03,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:03,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999817213] [2022-03-18 21:02:03,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:03,924 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:03,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:03,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:03,925 INFO L87 Difference]: Start difference. First operand 524 states and 751 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 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) [2022-03-18 21:02:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:04,396 INFO L93 Difference]: Finished difference Result 544 states and 778 transitions. [2022-03-18 21:02:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:04,397 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 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 52 [2022-03-18 21:02:04,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:04,399 INFO L225 Difference]: With dead ends: 544 [2022-03-18 21:02:04,399 INFO L226 Difference]: Without dead ends: 543 [2022-03-18 21:02:04,399 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 [2022-03-18 21:02:04,399 INFO L912 BasicCegarLoop]: 253 mSDtfsCounter, 196 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:04,399 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 1339 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:02:04,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-03-18 21:02:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2022-03-18 21:02:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 396 states have (on average 1.3282828282828283) internal successors, (526), 407 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-18 21:02:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 760 transitions. [2022-03-18 21:02:04,417 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 760 transitions. Word has length 52 [2022-03-18 21:02:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:04,417 INFO L478 AbstractCegarLoop]: Abstraction has 531 states and 760 transitions. [2022-03-18 21:02:04,417 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 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) [2022-03-18 21:02:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 760 transitions. [2022-03-18 21:02:04,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-18 21:02:04,417 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:04,418 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:04,418 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-18 21:02:04,418 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:04,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:04,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1529844936, now seen corresponding path program 1 times [2022-03-18 21:02:04,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:04,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10841169] [2022-03-18 21:02:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:04,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:04,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:04,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 21:02:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:04,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:04,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10841169] [2022-03-18 21:02:04,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10841169] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:04,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:04,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397538598] [2022-03-18 21:02:04,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:04,554 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:04,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:04,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:04,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:04,554 INFO L87 Difference]: Start difference. First operand 531 states and 760 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 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) [2022-03-18 21:02:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:05,155 INFO L93 Difference]: Finished difference Result 559 states and 794 transitions. [2022-03-18 21:02:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:02:05,156 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 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 52 [2022-03-18 21:02:05,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:05,157 INFO L225 Difference]: With dead ends: 559 [2022-03-18 21:02:05,157 INFO L226 Difference]: Without dead ends: 538 [2022-03-18 21:02:05,158 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-18 21:02:05,158 INFO L912 BasicCegarLoop]: 255 mSDtfsCounter, 138 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:05,158 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1449 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:02:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-18 21:02:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2022-03-18 21:02:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 395 states have (on average 1.3265822784810126) internal successors, (524), 406 states have internal predecessors, (524), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-18 21:02:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 758 transitions. [2022-03-18 21:02:05,169 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 758 transitions. Word has length 52 [2022-03-18 21:02:05,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:05,169 INFO L478 AbstractCegarLoop]: Abstraction has 530 states and 758 transitions. [2022-03-18 21:02:05,169 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 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) [2022-03-18 21:02:05,169 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 758 transitions. [2022-03-18 21:02:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 21:02:05,170 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:05,170 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] [2022-03-18 21:02:05,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-18 21:02:05,170 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:05,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:05,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1874017512, now seen corresponding path program 1 times [2022-03-18 21:02:05,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:05,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727150368] [2022-03-18 21:02:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:05,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-18 21:02:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 21:02:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:05,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:05,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727150368] [2022-03-18 21:02:05,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727150368] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:05,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:05,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 21:02:05,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363505934] [2022-03-18 21:02:05,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:05,275 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 21:02:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:05,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 21:02:05,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-18 21:02:05,276 INFO L87 Difference]: Start difference. First operand 530 states and 758 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:05,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:05,774 INFO L93 Difference]: Finished difference Result 549 states and 800 transitions. [2022-03-18 21:02:05,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:05,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-18 21:02:05,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:05,776 INFO L225 Difference]: With dead ends: 549 [2022-03-18 21:02:05,777 INFO L226 Difference]: Without dead ends: 549 [2022-03-18 21:02:05,777 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:05,777 INFO L912 BasicCegarLoop]: 268 mSDtfsCounter, 188 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:05,777 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 723 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:02:05,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-03-18 21:02:05,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 529. [2022-03-18 21:02:05,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3197969543147208) internal successors, (520), 405 states have internal predecessors, (520), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-18 21:02:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 754 transitions. [2022-03-18 21:02:05,787 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 754 transitions. Word has length 58 [2022-03-18 21:02:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:05,787 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 754 transitions. [2022-03-18 21:02:05,787 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:05,787 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 754 transitions. [2022-03-18 21:02:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-18 21:02:05,787 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:05,787 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:05,788 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-18 21:02:05,788 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2132872221, now seen corresponding path program 1 times [2022-03-18 21:02:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:05,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488310542] [2022-03-18 21:02:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:05,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-18 21:02:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:05,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:05,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488310542] [2022-03-18 21:02:05,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488310542] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:05,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:05,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:05,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370661212] [2022-03-18 21:02:05,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:05,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:05,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:05,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:05,909 INFO L87 Difference]: Start difference. First operand 529 states and 754 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:02:06,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:06,880 INFO L93 Difference]: Finished difference Result 671 states and 995 transitions. [2022-03-18 21:02:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 21:02:06,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-03-18 21:02:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:06,883 INFO L225 Difference]: With dead ends: 671 [2022-03-18 21:02:06,883 INFO L226 Difference]: Without dead ends: 639 [2022-03-18 21:02:06,883 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-03-18 21:02:06,883 INFO L912 BasicCegarLoop]: 336 mSDtfsCounter, 561 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:06,884 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 737 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 21:02:06,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-18 21:02:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 560. [2022-03-18 21:02:06,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 415 states have (on average 1.344578313253012) internal successors, (558), 426 states have internal predecessors, (558), 101 states have call successors, (101), 37 states have call predecessors, (101), 43 states have return successors, (165), 98 states have call predecessors, (165), 94 states have call successors, (165) [2022-03-18 21:02:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 824 transitions. [2022-03-18 21:02:06,899 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 824 transitions. Word has length 53 [2022-03-18 21:02:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:06,900 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 824 transitions. [2022-03-18 21:02:06,900 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:02:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 824 transitions. [2022-03-18 21:02:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-18 21:02:06,901 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:06,901 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:06,901 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-18 21:02:06,901 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:06,901 INFO L85 PathProgramCache]: Analyzing trace with hash 983025775, now seen corresponding path program 1 times [2022-03-18 21:02:06,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:06,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20707825] [2022-03-18 21:02:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:06,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:06,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 21:02:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:07,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:07,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:07,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20707825] [2022-03-18 21:02:07,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20707825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:07,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:07,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 21:02:07,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243378257] [2022-03-18 21:02:07,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:07,081 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 21:02:07,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:07,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 21:02:07,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:02:07,081 INFO L87 Difference]: Start difference. First operand 560 states and 824 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:07,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:07,629 INFO L93 Difference]: Finished difference Result 390 states and 522 transitions. [2022-03-18 21:02:07,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 21:02:07,630 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-03-18 21:02:07,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:07,631 INFO L225 Difference]: With dead ends: 390 [2022-03-18 21:02:07,631 INFO L226 Difference]: Without dead ends: 390 [2022-03-18 21:02:07,631 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-18 21:02:07,632 INFO L912 BasicCegarLoop]: 251 mSDtfsCounter, 153 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:07,632 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1520 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:02:07,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-18 21:02:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 338. [2022-03-18 21:02:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 246 states have (on average 1.2560975609756098) internal successors, (309), 254 states have internal predecessors, (309), 59 states have call successors, (59), 31 states have call predecessors, (59), 32 states have return successors, (74), 54 states have call predecessors, (74), 53 states have call successors, (74) [2022-03-18 21:02:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 442 transitions. [2022-03-18 21:02:07,638 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 442 transitions. Word has length 62 [2022-03-18 21:02:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:07,638 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 442 transitions. [2022-03-18 21:02:07,638 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-18 21:02:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 442 transitions. [2022-03-18 21:02:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-18 21:02:07,638 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:07,638 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] [2022-03-18 21:02:07,638 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-18 21:02:07,639 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:07,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:07,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1006609107, now seen corresponding path program 1 times [2022-03-18 21:02:07,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:07,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667870947] [2022-03-18 21:02:07,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:07,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:07,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 21:02:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:07,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667870947] [2022-03-18 21:02:07,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667870947] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:07,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:07,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 21:02:07,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281680678] [2022-03-18 21:02:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:07,791 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 21:02:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 21:02:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-18 21:02:07,791 INFO L87 Difference]: Start difference. First operand 338 states and 442 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 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) [2022-03-18 21:02:08,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:08,408 INFO L93 Difference]: Finished difference Result 343 states and 451 transitions. [2022-03-18 21:02:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 21:02:08,409 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 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 58 [2022-03-18 21:02:08,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:08,410 INFO L225 Difference]: With dead ends: 343 [2022-03-18 21:02:08,410 INFO L226 Difference]: Without dead ends: 304 [2022-03-18 21:02:08,411 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 [2022-03-18 21:02:08,411 INFO L912 BasicCegarLoop]: 227 mSDtfsCounter, 155 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:08,412 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1485 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 21:02:08,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-03-18 21:02:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2022-03-18 21:02:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 220 states have internal predecessors, (273), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-03-18 21:02:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 398 transitions. [2022-03-18 21:02:08,416 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 398 transitions. Word has length 58 [2022-03-18 21:02:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:08,427 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 398 transitions. [2022-03-18 21:02:08,428 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 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) [2022-03-18 21:02:08,428 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 398 transitions. [2022-03-18 21:02:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-18 21:02:08,428 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:08,428 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:08,428 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-18 21:02:08,428 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:08,429 INFO L85 PathProgramCache]: Analyzing trace with hash -763479135, now seen corresponding path program 1 times [2022-03-18 21:02:08,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:08,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121416450] [2022-03-18 21:02:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:08,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:08,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 21:02:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:08,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:08,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:08,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121416450] [2022-03-18 21:02:08,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121416450] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:08,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:08,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:08,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723629851] [2022-03-18 21:02:08,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:08,570 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:08,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:08,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:08,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:08,571 INFO L87 Difference]: Start difference. First operand 298 states and 398 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:09,162 INFO L93 Difference]: Finished difference Result 316 states and 429 transitions. [2022-03-18 21:02:09,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 21:02:09,163 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-18 21:02:09,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:09,164 INFO L225 Difference]: With dead ends: 316 [2022-03-18 21:02:09,164 INFO L226 Difference]: Without dead ends: 316 [2022-03-18 21:02:09,164 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-03-18 21:02:09,164 INFO L912 BasicCegarLoop]: 211 mSDtfsCounter, 246 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:09,164 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 867 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:02:09,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-18 21:02:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2022-03-18 21:02:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.266355140186916) internal successors, (271), 220 states have internal predecessors, (271), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-03-18 21:02:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 396 transitions. [2022-03-18 21:02:09,169 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 396 transitions. Word has length 66 [2022-03-18 21:02:09,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:09,169 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 396 transitions. [2022-03-18 21:02:09,169 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:09,169 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 396 transitions. [2022-03-18 21:02:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-18 21:02:09,170 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:09,170 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:09,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-18 21:02:09,170 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:09,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:09,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1216763617, now seen corresponding path program 1 times [2022-03-18 21:02:09,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:09,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566504825] [2022-03-18 21:02:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:09,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 21:02:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:09,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:09,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566504825] [2022-03-18 21:02:09,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566504825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:09,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:09,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:09,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768316069] [2022-03-18 21:02:09,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:09,314 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:09,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:09,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:09,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:09,315 INFO L87 Difference]: Start difference. First operand 298 states and 396 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:09,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:09,619 INFO L93 Difference]: Finished difference Result 330 states and 453 transitions. [2022-03-18 21:02:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-03-18 21:02:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:09,621 INFO L225 Difference]: With dead ends: 330 [2022-03-18 21:02:09,621 INFO L226 Difference]: Without dead ends: 330 [2022-03-18 21:02:09,621 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:02:09,621 INFO L912 BasicCegarLoop]: 225 mSDtfsCounter, 133 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:09,622 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1195 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-18 21:02:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 303. [2022-03-18 21:02:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 218 states have (on average 1.261467889908257) internal successors, (275), 224 states have internal predecessors, (275), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2022-03-18 21:02:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 409 transitions. [2022-03-18 21:02:09,627 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 409 transitions. Word has length 68 [2022-03-18 21:02:09,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:09,627 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 409 transitions. [2022-03-18 21:02:09,627 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 409 transitions. [2022-03-18 21:02:09,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-18 21:02:09,627 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:09,627 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:09,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-18 21:02:09,628 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:09,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash 107043316, now seen corresponding path program 1 times [2022-03-18 21:02:09,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:09,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552158901] [2022-03-18 21:02:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:09,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 21:02:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:09,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:09,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552158901] [2022-03-18 21:02:09,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552158901] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:09,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:09,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486573826] [2022-03-18 21:02:09,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:09,762 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:09,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:09,763 INFO L87 Difference]: Start difference. First operand 303 states and 409 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:10,059 INFO L93 Difference]: Finished difference Result 474 states and 674 transitions. [2022-03-18 21:02:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:10,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-18 21:02:10,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:10,061 INFO L225 Difference]: With dead ends: 474 [2022-03-18 21:02:10,061 INFO L226 Difference]: Without dead ends: 474 [2022-03-18 21:02:10,061 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:10,062 INFO L912 BasicCegarLoop]: 317 mSDtfsCounter, 230 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:10,062 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 793 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:02:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-03-18 21:02:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 307. [2022-03-18 21:02:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 222 states have (on average 1.2657657657657657) internal successors, (281), 228 states have internal predecessors, (281), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2022-03-18 21:02:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 415 transitions. [2022-03-18 21:02:10,068 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 415 transitions. Word has length 69 [2022-03-18 21:02:10,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:10,068 INFO L478 AbstractCegarLoop]: Abstraction has 307 states and 415 transitions. [2022-03-18 21:02:10,068 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-18 21:02:10,068 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 415 transitions. [2022-03-18 21:02:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-18 21:02:10,069 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:10,069 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:10,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-18 21:02:10,069 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:10,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1007458050, now seen corresponding path program 1 times [2022-03-18 21:02:10,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:10,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76610285] [2022-03-18 21:02:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:10,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:10,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:10,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:10,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-18 21:02:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:10,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:10,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:10,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76610285] [2022-03-18 21:02:10,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76610285] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:10,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:10,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:02:10,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086221279] [2022-03-18 21:02:10,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:10,216 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:02:10,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:10,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:02:10,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:02:10,216 INFO L87 Difference]: Start difference. First operand 307 states and 415 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:10,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:10,983 INFO L93 Difference]: Finished difference Result 529 states and 764 transitions. [2022-03-18 21:02:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:10,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-03-18 21:02:10,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:10,986 INFO L225 Difference]: With dead ends: 529 [2022-03-18 21:02:10,986 INFO L226 Difference]: Without dead ends: 529 [2022-03-18 21:02:10,986 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:02:10,986 INFO L912 BasicCegarLoop]: 253 mSDtfsCounter, 328 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:10,986 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 761 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 21:02:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-03-18 21:02:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 490. [2022-03-18 21:02:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 357 states have (on average 1.2913165266106443) internal successors, (461), 366 states have internal predecessors, (461), 89 states have call successors, (89), 35 states have call predecessors, (89), 43 states have return successors, (153), 89 states have call predecessors, (153), 85 states have call successors, (153) [2022-03-18 21:02:10,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2022-03-18 21:02:10,994 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 70 [2022-03-18 21:02:10,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:10,995 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2022-03-18 21:02:10,995 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-18 21:02:10,995 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2022-03-18 21:02:10,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-18 21:02:10,995 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:10,995 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:10,995 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-18 21:02:10,995 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:10,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2035760571, now seen corresponding path program 1 times [2022-03-18 21:02:10,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:10,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515207271] [2022-03-18 21:02:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:10,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:11,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:11,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515207271] [2022-03-18 21:02:11,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515207271] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:11,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:11,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-18 21:02:11,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134182707] [2022-03-18 21:02:11,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:11,179 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-18 21:02:11,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:11,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-18 21:02:11,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-18 21:02:11,179 INFO L87 Difference]: Start difference. First operand 490 states and 703 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-18 21:02:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:11,507 INFO L93 Difference]: Finished difference Result 493 states and 705 transitions. [2022-03-18 21:02:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-18 21:02:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2022-03-18 21:02:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:11,509 INFO L225 Difference]: With dead ends: 493 [2022-03-18 21:02:11,510 INFO L226 Difference]: Without dead ends: 493 [2022-03-18 21:02:11,510 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-03-18 21:02:11,510 INFO L912 BasicCegarLoop]: 238 mSDtfsCounter, 208 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:11,510 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1162 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-18 21:02:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 484. [2022-03-18 21:02:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 353 states have (on average 1.2832861189801699) internal successors, (453), 361 states have internal predecessors, (453), 88 states have call successors, (88), 35 states have call predecessors, (88), 42 states have return successors, (146), 88 states have call predecessors, (146), 84 states have call successors, (146) [2022-03-18 21:02:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 687 transitions. [2022-03-18 21:02:11,518 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 687 transitions. Word has length 72 [2022-03-18 21:02:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:11,518 INFO L478 AbstractCegarLoop]: Abstraction has 484 states and 687 transitions. [2022-03-18 21:02:11,518 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-18 21:02:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 687 transitions. [2022-03-18 21:02:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-18 21:02:11,518 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:11,518 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:11,519 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-18 21:02:11,519 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:11,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1777696599, now seen corresponding path program 1 times [2022-03-18 21:02:11,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:11,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836644351] [2022-03-18 21:02:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:11,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-18 21:02:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 21:02:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:11,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:11,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836644351] [2022-03-18 21:02:11,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836644351] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:11,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:11,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-18 21:02:11,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756852070] [2022-03-18 21:02:11,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:11,682 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 21:02:11,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:11,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 21:02:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-18 21:02:11,683 INFO L87 Difference]: Start difference. First operand 484 states and 687 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 21:02:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:12,347 INFO L93 Difference]: Finished difference Result 450 states and 629 transitions. [2022-03-18 21:02:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 21:02:12,348 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-03-18 21:02:12,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:12,349 INFO L225 Difference]: With dead ends: 450 [2022-03-18 21:02:12,349 INFO L226 Difference]: Without dead ends: 450 [2022-03-18 21:02:12,350 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-18 21:02:12,350 INFO L912 BasicCegarLoop]: 317 mSDtfsCounter, 232 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:12,350 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1033 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 21:02:12,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-18 21:02:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2022-03-18 21:02:12,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 320 states have (on average 1.296875) internal successors, (415), 329 states have internal predecessors, (415), 79 states have call successors, (79), 33 states have call predecessors, (79), 36 states have return successors, (110), 74 states have call predecessors, (110), 75 states have call successors, (110) [2022-03-18 21:02:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 604 transitions. [2022-03-18 21:02:12,359 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 604 transitions. Word has length 83 [2022-03-18 21:02:12,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:12,359 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 604 transitions. [2022-03-18 21:02:12,359 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-18 21:02:12,359 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 604 transitions. [2022-03-18 21:02:12,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-18 21:02:12,360 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:12,360 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:12,360 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-18 21:02:12,360 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1836701912, now seen corresponding path program 1 times [2022-03-18 21:02:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:12,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650528231] [2022-03-18 21:02:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:12,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 21:02:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 21:02:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:12,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:12,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650528231] [2022-03-18 21:02:12,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650528231] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:12,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:12,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 21:02:12,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130466012] [2022-03-18 21:02:12,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:12,684 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 21:02:12,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 21:02:12,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-18 21:02:12,684 INFO L87 Difference]: Start difference. First operand 436 states and 604 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 21:02:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:13,257 INFO L93 Difference]: Finished difference Result 483 states and 678 transitions. [2022-03-18 21:02:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 21:02:13,257 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-03-18 21:02:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:13,261 INFO L225 Difference]: With dead ends: 483 [2022-03-18 21:02:13,261 INFO L226 Difference]: Without dead ends: 461 [2022-03-18 21:02:13,261 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-18 21:02:13,261 INFO L912 BasicCegarLoop]: 234 mSDtfsCounter, 211 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:13,262 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 2662 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:02:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-03-18 21:02:13,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 447. [2022-03-18 21:02:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 329 states have (on average 1.2887537993920972) internal successors, (424), 339 states have internal predecessors, (424), 79 states have call successors, (79), 33 states have call predecessors, (79), 38 states have return successors, (116), 75 states have call predecessors, (116), 75 states have call successors, (116) [2022-03-18 21:02:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2022-03-18 21:02:13,278 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 92 [2022-03-18 21:02:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:13,278 INFO L478 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2022-03-18 21:02:13,278 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 21:02:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2022-03-18 21:02:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-18 21:02:13,279 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:13,279 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:13,279 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-18 21:02:13,280 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:13,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1857542518, now seen corresponding path program 1 times [2022-03-18 21:02:13,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:13,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217811595] [2022-03-18 21:02:13,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:13,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 21:02:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 21:02:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:13,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217811595] [2022-03-18 21:02:13,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217811595] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:13,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:13,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 21:02:13,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565192935] [2022-03-18 21:02:13,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:13,583 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 21:02:13,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:13,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 21:02:13,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-18 21:02:13,584 INFO L87 Difference]: Start difference. First operand 447 states and 619 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 21:02:14,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:14,477 INFO L93 Difference]: Finished difference Result 481 states and 674 transitions. [2022-03-18 21:02:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-18 21:02:14,477 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-03-18 21:02:14,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:14,479 INFO L225 Difference]: With dead ends: 481 [2022-03-18 21:02:14,479 INFO L226 Difference]: Without dead ends: 459 [2022-03-18 21:02:14,479 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-18 21:02:14,480 INFO L912 BasicCegarLoop]: 249 mSDtfsCounter, 131 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:14,480 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 3057 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 21:02:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-03-18 21:02:14,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-03-18 21:02:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 319 states have (on average 1.297805642633229) internal successors, (414), 328 states have internal predecessors, (414), 78 states have call successors, (78), 33 states have call predecessors, (78), 36 states have return successors, (108), 73 states have call predecessors, (108), 74 states have call successors, (108) [2022-03-18 21:02:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 600 transitions. [2022-03-18 21:02:14,486 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 600 transitions. Word has length 93 [2022-03-18 21:02:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:14,486 INFO L478 AbstractCegarLoop]: Abstraction has 434 states and 600 transitions. [2022-03-18 21:02:14,487 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-18 21:02:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 600 transitions. [2022-03-18 21:02:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-18 21:02:14,487 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:14,487 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:14,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-18 21:02:14,487 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:14,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1054192149, now seen corresponding path program 1 times [2022-03-18 21:02:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:14,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885886372] [2022-03-18 21:02:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:14,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 21:02:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 21:02:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 21:02:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:14,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:14,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885886372] [2022-03-18 21:02:14,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885886372] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:14,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:14,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-18 21:02:14,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396747082] [2022-03-18 21:02:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:14,843 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-18 21:02:14,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-18 21:02:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-03-18 21:02:14,844 INFO L87 Difference]: Start difference. First operand 434 states and 600 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-18 21:02:16,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:16,099 INFO L93 Difference]: Finished difference Result 467 states and 639 transitions. [2022-03-18 21:02:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-18 21:02:16,099 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2022-03-18 21:02:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:16,101 INFO L225 Difference]: With dead ends: 467 [2022-03-18 21:02:16,101 INFO L226 Difference]: Without dead ends: 434 [2022-03-18 21:02:16,101 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2022-03-18 21:02:16,102 INFO L912 BasicCegarLoop]: 210 mSDtfsCounter, 405 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:16,102 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 825 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-18 21:02:16,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-03-18 21:02:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 424. [2022-03-18 21:02:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 313 states have (on average 1.3003194888178913) internal successors, (407), 322 states have internal predecessors, (407), 75 states have call successors, (75), 32 states have call predecessors, (75), 35 states have return successors, (105), 70 states have call predecessors, (105), 71 states have call successors, (105) [2022-03-18 21:02:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 587 transitions. [2022-03-18 21:02:16,110 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 587 transitions. Word has length 103 [2022-03-18 21:02:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:16,110 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 587 transitions. [2022-03-18 21:02:16,110 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-18 21:02:16,110 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 587 transitions. [2022-03-18 21:02:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-18 21:02:16,111 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:16,111 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:16,111 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-18 21:02:16,111 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1385513232, now seen corresponding path program 1 times [2022-03-18 21:02:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:16,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433379325] [2022-03-18 21:02:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:16,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 21:02:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 21:02:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-18 21:02:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-18 21:02:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:16,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:16,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433379325] [2022-03-18 21:02:16,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433379325] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:16,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:16,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-18 21:02:16,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593800120] [2022-03-18 21:02:16,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:16,519 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-18 21:02:16,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:16,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-18 21:02:16,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-18 21:02:16,520 INFO L87 Difference]: Start difference. First operand 424 states and 587 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-18 21:02:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:17,284 INFO L93 Difference]: Finished difference Result 478 states and 676 transitions. [2022-03-18 21:02:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-18 21:02:17,285 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2022-03-18 21:02:17,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:17,287 INFO L225 Difference]: With dead ends: 478 [2022-03-18 21:02:17,287 INFO L226 Difference]: Without dead ends: 454 [2022-03-18 21:02:17,287 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 21:02:17,288 INFO L912 BasicCegarLoop]: 200 mSDtfsCounter, 137 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:17,288 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 2252 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 21:02:17,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-03-18 21:02:17,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 440. [2022-03-18 21:02:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 324 states have (on average 1.2901234567901234) internal successors, (418), 334 states have internal predecessors, (418), 78 states have call successors, (78), 32 states have call predecessors, (78), 37 states have return successors, (114), 74 states have call predecessors, (114), 73 states have call successors, (114) [2022-03-18 21:02:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 610 transitions. [2022-03-18 21:02:17,301 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 610 transitions. Word has length 108 [2022-03-18 21:02:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:17,301 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 610 transitions. [2022-03-18 21:02:17,301 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-18 21:02:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 610 transitions. [2022-03-18 21:02:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-18 21:02:17,302 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:17,302 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:17,302 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-18 21:02:17,302 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:17,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:17,302 INFO L85 PathProgramCache]: Analyzing trace with hash -205451642, now seen corresponding path program 1 times [2022-03-18 21:02:17,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:17,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696696016] [2022-03-18 21:02:17,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:17,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 21:02:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 21:02:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-18 21:02:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-18 21:02:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:17,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:17,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696696016] [2022-03-18 21:02:17,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696696016] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:17,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:17,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-18 21:02:17,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712783494] [2022-03-18 21:02:17,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:17,672 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-18 21:02:17,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-18 21:02:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-18 21:02:17,673 INFO L87 Difference]: Start difference. First operand 440 states and 610 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-18 21:02:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:18,619 INFO L93 Difference]: Finished difference Result 480 states and 674 transitions. [2022-03-18 21:02:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-18 21:02:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2022-03-18 21:02:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:18,621 INFO L225 Difference]: With dead ends: 480 [2022-03-18 21:02:18,621 INFO L226 Difference]: Without dead ends: 443 [2022-03-18 21:02:18,621 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-03-18 21:02:18,622 INFO L912 BasicCegarLoop]: 238 mSDtfsCounter, 120 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2628 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:18,622 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 2628 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-18 21:02:18,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-03-18 21:02:18,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 413. [2022-03-18 21:02:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 304 states have (on average 1.2664473684210527) internal successors, (385), 312 states have internal predecessors, (385), 75 states have call successors, (75), 32 states have call predecessors, (75), 33 states have return successors, (97), 69 states have call predecessors, (97), 70 states have call successors, (97) [2022-03-18 21:02:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 557 transitions. [2022-03-18 21:02:18,629 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 557 transitions. Word has length 109 [2022-03-18 21:02:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:18,629 INFO L478 AbstractCegarLoop]: Abstraction has 413 states and 557 transitions. [2022-03-18 21:02:18,629 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-18 21:02:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 557 transitions. [2022-03-18 21:02:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-18 21:02:18,630 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:18,630 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:18,630 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-18 21:02:18,630 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:18,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:18,630 INFO L85 PathProgramCache]: Analyzing trace with hash -790809002, now seen corresponding path program 1 times [2022-03-18 21:02:18,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:18,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43395719] [2022-03-18 21:02:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:18,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 21:02:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 21:02:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 21:02:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 21:02:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-18 21:02:18,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:18,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43395719] [2022-03-18 21:02:18,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43395719] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:18,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:18,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 21:02:18,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259064304] [2022-03-18 21:02:18,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:18,815 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 21:02:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:18,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 21:02:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-18 21:02:18,816 INFO L87 Difference]: Start difference. First operand 413 states and 557 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-18 21:02:19,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:19,340 INFO L93 Difference]: Finished difference Result 420 states and 559 transitions. [2022-03-18 21:02:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 21:02:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2022-03-18 21:02:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:19,342 INFO L225 Difference]: With dead ends: 420 [2022-03-18 21:02:19,342 INFO L226 Difference]: Without dead ends: 420 [2022-03-18 21:02:19,342 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:02:19,342 INFO L912 BasicCegarLoop]: 217 mSDtfsCounter, 156 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:19,342 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 1253 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-18 21:02:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-18 21:02:19,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 408. [2022-03-18 21:02:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 302 states have (on average 1.2483443708609272) internal successors, (377), 309 states have internal predecessors, (377), 71 states have call successors, (71), 32 states have call predecessors, (71), 34 states have return successors, (92), 67 states have call predecessors, (92), 66 states have call successors, (92) [2022-03-18 21:02:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 540 transitions. [2022-03-18 21:02:19,348 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 540 transitions. Word has length 121 [2022-03-18 21:02:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:19,348 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 540 transitions. [2022-03-18 21:02:19,348 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-18 21:02:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 540 transitions. [2022-03-18 21:02:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-18 21:02:19,349 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:19,349 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:19,349 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-18 21:02:19,349 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:19,350 INFO L85 PathProgramCache]: Analyzing trace with hash -474317813, now seen corresponding path program 1 times [2022-03-18 21:02:19,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:19,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241231855] [2022-03-18 21:02:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:19,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 21:02:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 21:02:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 21:02:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 21:02:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-18 21:02:19,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:19,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241231855] [2022-03-18 21:02:19,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241231855] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:19,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:19,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 21:02:19,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112017491] [2022-03-18 21:02:19,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:19,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 21:02:19,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:19,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 21:02:19,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-18 21:02:19,544 INFO L87 Difference]: Start difference. First operand 408 states and 540 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-18 21:02:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:20,047 INFO L93 Difference]: Finished difference Result 547 states and 788 transitions. [2022-03-18 21:02:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 21:02:20,047 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2022-03-18 21:02:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:20,051 INFO L225 Difference]: With dead ends: 547 [2022-03-18 21:02:20,052 INFO L226 Difference]: Without dead ends: 547 [2022-03-18 21:02:20,052 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:02:20,052 INFO L912 BasicCegarLoop]: 273 mSDtfsCounter, 196 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:20,052 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 1507 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:02:20,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-03-18 21:02:20,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 399. [2022-03-18 21:02:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 294 states have (on average 1.248299319727891) internal successors, (367), 301 states have internal predecessors, (367), 71 states have call successors, (71), 32 states have call predecessors, (71), 33 states have return successors, (91), 66 states have call predecessors, (91), 66 states have call successors, (91) [2022-03-18 21:02:20,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 529 transitions. [2022-03-18 21:02:20,060 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 529 transitions. Word has length 122 [2022-03-18 21:02:20,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:20,061 INFO L478 AbstractCegarLoop]: Abstraction has 399 states and 529 transitions. [2022-03-18 21:02:20,061 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-18 21:02:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 529 transitions. [2022-03-18 21:02:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-18 21:02:20,062 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:20,062 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:20,062 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-18 21:02:20,062 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:20,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash -286096315, now seen corresponding path program 1 times [2022-03-18 21:02:20,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:20,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166586084] [2022-03-18 21:02:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:20,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 21:02:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-18 21:02:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-18 21:02:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-18 21:02:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-18 21:02:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 21:02:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:02:20,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:20,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166586084] [2022-03-18 21:02:20,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166586084] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:20,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:20,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-18 21:02:20,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464975278] [2022-03-18 21:02:20,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:20,426 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-18 21:02:20,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:20,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-18 21:02:20,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-03-18 21:02:20,427 INFO L87 Difference]: Start difference. First operand 399 states and 529 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-18 21:02:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:21,646 INFO L93 Difference]: Finished difference Result 413 states and 548 transitions. [2022-03-18 21:02:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-18 21:02:21,646 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 119 [2022-03-18 21:02:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:21,647 INFO L225 Difference]: With dead ends: 413 [2022-03-18 21:02:21,647 INFO L226 Difference]: Without dead ends: 354 [2022-03-18 21:02:21,648 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=1718, Unknown=0, NotChecked=0, Total=1980 [2022-03-18 21:02:21,648 INFO L912 BasicCegarLoop]: 178 mSDtfsCounter, 398 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:21,648 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 492 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 21:02:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-18 21:02:21,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 341. [2022-03-18 21:02:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.18) internal successors, (295), 255 states have internal predecessors, (295), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2022-03-18 21:02:21,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 436 transitions. [2022-03-18 21:02:21,654 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 436 transitions. Word has length 119 [2022-03-18 21:02:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:21,654 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 436 transitions. [2022-03-18 21:02:21,654 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-18 21:02:21,654 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 436 transitions. [2022-03-18 21:02:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-18 21:02:21,655 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:21,655 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:21,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-18 21:02:21,655 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:21,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash 762913287, now seen corresponding path program 1 times [2022-03-18 21:02:21,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:21,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503931271] [2022-03-18 21:02:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:21,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 21:02:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 21:02:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 21:02:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 21:02:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 21:02:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 21:02:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-18 21:02:21,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:21,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503931271] [2022-03-18 21:02:21,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503931271] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 21:02:21,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72657895] [2022-03-18 21:02:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:21,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:02:21,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:02:21,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 21:02:21,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 21:02:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-18 21:02:22,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 21:02:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-03-18 21:02:22,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 21:02:22,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72657895] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:22,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 21:02:22,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-03-18 21:02:22,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222313563] [2022-03-18 21:02:22,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:22,334 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 21:02:22,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:22,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 21:02:22,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-18 21:02:22,335 INFO L87 Difference]: Start difference. First operand 341 states and 436 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-18 21:02:22,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:22,339 INFO L93 Difference]: Finished difference Result 341 states and 434 transitions. [2022-03-18 21:02:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 21:02:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 163 [2022-03-18 21:02:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:22,340 INFO L225 Difference]: With dead ends: 341 [2022-03-18 21:02:22,340 INFO L226 Difference]: Without dead ends: 341 [2022-03-18 21:02:22,340 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-18 21:02:22,341 INFO L912 BasicCegarLoop]: 173 mSDtfsCounter, 28 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:22,342 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 303 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 21:02:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-03-18 21:02:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-03-18 21:02:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.172) internal successors, (293), 255 states have internal predecessors, (293), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2022-03-18 21:02:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 434 transitions. [2022-03-18 21:02:22,347 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 434 transitions. Word has length 163 [2022-03-18 21:02:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:22,347 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 434 transitions. [2022-03-18 21:02:22,347 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-18 21:02:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 434 transitions. [2022-03-18 21:02:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-18 21:02:22,348 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:22,348 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:22,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-18 21:02:22,571 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-18 21:02:22,571 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:22,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:22,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1424868086, now seen corresponding path program 1 times [2022-03-18 21:02:22,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:22,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607605496] [2022-03-18 21:02:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:22,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 21:02:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 21:02:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 21:02:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 21:02:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-18 21:02:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-18 21:02:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-18 21:02:22,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:22,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607605496] [2022-03-18 21:02:22,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607605496] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 21:02:22,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503380621] [2022-03-18 21:02:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:22,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 21:02:22,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:02:22,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 21:02:22,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 21:02:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:22,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 21:02:22,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 21:02:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-18 21:02:23,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 21:02:23,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503380621] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:23,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 21:02:23,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 15 [2022-03-18 21:02:23,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405072560] [2022-03-18 21:02:23,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:23,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:02:23,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:02:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-18 21:02:23,235 INFO L87 Difference]: Start difference. First operand 341 states and 434 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-18 21:02:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:23,276 INFO L93 Difference]: Finished difference Result 374 states and 481 transitions. [2022-03-18 21:02:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 21:02:23,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2022-03-18 21:02:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:23,277 INFO L225 Difference]: With dead ends: 374 [2022-03-18 21:02:23,277 INFO L226 Difference]: Without dead ends: 372 [2022-03-18 21:02:23,278 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-03-18 21:02:23,278 INFO L912 BasicCegarLoop]: 171 mSDtfsCounter, 12 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:23,278 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 826 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 21:02:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-03-18 21:02:23,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 361. [2022-03-18 21:02:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 268 states have (on average 1.1604477611940298) internal successors, (311), 273 states have internal predecessors, (311), 64 states have call successors, (64), 29 states have call predecessors, (64), 28 states have return successors, (88), 58 states have call predecessors, (88), 58 states have call successors, (88) [2022-03-18 21:02:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 463 transitions. [2022-03-18 21:02:23,284 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 463 transitions. Word has length 163 [2022-03-18 21:02:23,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:23,284 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 463 transitions. [2022-03-18 21:02:23,284 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-18 21:02:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 463 transitions. [2022-03-18 21:02:23,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-18 21:02:23,285 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:23,285 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:23,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-18 21:02:23,504 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-18 21:02:23,504 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:23,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:23,504 INFO L85 PathProgramCache]: Analyzing trace with hash -589316084, now seen corresponding path program 1 times [2022-03-18 21:02:23,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:23,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686337535] [2022-03-18 21:02:23,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:23,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 21:02:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 21:02:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 21:02:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 21:02:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 21:02:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 21:02:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-18 21:02:23,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:23,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686337535] [2022-03-18 21:02:23,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686337535] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:23,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:23,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 21:02:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815157134] [2022-03-18 21:02:23,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:23,743 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 21:02:23,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 21:02:23,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-18 21:02:23,744 INFO L87 Difference]: Start difference. First operand 361 states and 463 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-18 21:02:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:24,191 INFO L93 Difference]: Finished difference Result 428 states and 566 transitions. [2022-03-18 21:02:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 21:02:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 164 [2022-03-18 21:02:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:24,193 INFO L225 Difference]: With dead ends: 428 [2022-03-18 21:02:24,193 INFO L226 Difference]: Without dead ends: 428 [2022-03-18 21:02:24,193 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:02:24,193 INFO L912 BasicCegarLoop]: 215 mSDtfsCounter, 150 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:24,193 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 1135 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-18 21:02:24,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-18 21:02:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 345. [2022-03-18 21:02:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 256 states have (on average 1.14453125) internal successors, (293), 260 states have internal predecessors, (293), 60 states have call successors, (60), 29 states have call predecessors, (60), 28 states have return successors, (80), 55 states have call predecessors, (80), 54 states have call successors, (80) [2022-03-18 21:02:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 433 transitions. [2022-03-18 21:02:24,199 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 433 transitions. Word has length 164 [2022-03-18 21:02:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:24,200 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 433 transitions. [2022-03-18 21:02:24,200 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-18 21:02:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 433 transitions. [2022-03-18 21:02:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-03-18 21:02:24,201 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:24,201 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:24,201 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-18 21:02:24,201 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash -158276280, now seen corresponding path program 1 times [2022-03-18 21:02:24,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:24,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257028294] [2022-03-18 21:02:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:24,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 21:02:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 21:02:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 21:02:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 21:02:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 21:02:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 21:02:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 21:02:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 21:02:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-03-18 21:02:24,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:24,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257028294] [2022-03-18 21:02:24,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257028294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:24,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:24,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 21:02:24,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869146788] [2022-03-18 21:02:24,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:24,449 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 21:02:24,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:24,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 21:02:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-18 21:02:24,450 INFO L87 Difference]: Start difference. First operand 345 states and 433 transitions. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 21:02:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:24,823 INFO L93 Difference]: Finished difference Result 354 states and 451 transitions. [2022-03-18 21:02:24,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 21:02:24,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 204 [2022-03-18 21:02:24,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:24,824 INFO L225 Difference]: With dead ends: 354 [2022-03-18 21:02:24,824 INFO L226 Difference]: Without dead ends: 354 [2022-03-18 21:02:24,825 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:02:24,825 INFO L912 BasicCegarLoop]: 191 mSDtfsCounter, 148 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:24,825 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 915 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 21:02:24,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-18 21:02:24,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 309. [2022-03-18 21:02:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 231 states have (on average 1.1255411255411256) internal successors, (260), 234 states have internal predecessors, (260), 52 states have call successors, (52), 24 states have call predecessors, (52), 25 states have return successors, (73), 50 states have call predecessors, (73), 47 states have call successors, (73) [2022-03-18 21:02:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 385 transitions. [2022-03-18 21:02:24,830 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 385 transitions. Word has length 204 [2022-03-18 21:02:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:24,830 INFO L478 AbstractCegarLoop]: Abstraction has 309 states and 385 transitions. [2022-03-18 21:02:24,830 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 21:02:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 385 transitions. [2022-03-18 21:02:24,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-03-18 21:02:24,831 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:02:24,832 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:24,832 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-18 21:02:24,832 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:02:24,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:02:24,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1341132510, now seen corresponding path program 1 times [2022-03-18 21:02:24,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:02:24,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264450778] [2022-03-18 21:02:24,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:02:24,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:02:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:02:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:02:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-18 21:02:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 21:02:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-18 21:02:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 21:02:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-18 21:02:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:24,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 21:02:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-18 21:02:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-18 21:02:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-18 21:02:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-18 21:02:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:02:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:02:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-18 21:02:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:02:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-03-18 21:02:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:02:25,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264450778] [2022-03-18 21:02:25,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264450778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:02:25,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:02:25,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-18 21:02:25,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350908796] [2022-03-18 21:02:25,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:02:25,057 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-18 21:02:25,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:02:25,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-18 21:02:25,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-18 21:02:25,057 INFO L87 Difference]: Start difference. First operand 309 states and 385 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 21:02:25,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:02:25,337 INFO L93 Difference]: Finished difference Result 290 states and 362 transitions. [2022-03-18 21:02:25,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 21:02:25,337 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 207 [2022-03-18 21:02:25,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:02:25,338 INFO L225 Difference]: With dead ends: 290 [2022-03-18 21:02:25,338 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 21:02:25,338 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-18 21:02:25,338 INFO L912 BasicCegarLoop]: 153 mSDtfsCounter, 146 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:02:25,338 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 663 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:02:25,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 21:02:25,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 21:02:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 21:02:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 21:02:25,339 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2022-03-18 21:02:25,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:02:25,339 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 21:02:25,339 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-18 21:02:25,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 21:02:25,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 21:02:25,341 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 21:02:25,341 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-18 21:02:25,343 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:02:25,344 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 21:02:25,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:02:25 BasicIcfg [2022-03-18 21:02:25,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 21:02:25,346 INFO L158 Benchmark]: Toolchain (without parser) took 43375.02ms. Allocated memory was 182.5MB in the beginning and 268.4MB in the end (delta: 86.0MB). Free memory was 131.1MB in the beginning and 199.2MB in the end (delta: -68.1MB). Peak memory consumption was 18.8MB. Max. memory is 8.0GB. [2022-03-18 21:02:25,346 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 21:02:25,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.53ms. Allocated memory is still 182.5MB. Free memory was 130.9MB in the beginning and 148.8MB in the end (delta: -18.0MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2022-03-18 21:02:25,346 INFO L158 Benchmark]: Boogie Preprocessor took 55.20ms. Allocated memory is still 182.5MB. Free memory was 148.8MB in the beginning and 145.3MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-18 21:02:25,346 INFO L158 Benchmark]: RCFGBuilder took 750.80ms. Allocated memory is still 182.5MB. Free memory was 145.3MB in the beginning and 105.4MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-03-18 21:02:25,347 INFO L158 Benchmark]: IcfgTransformer took 60.55ms. Allocated memory was 182.5MB in the beginning and 219.2MB in the end (delta: 36.7MB). Free memory was 105.4MB in the beginning and 192.3MB in the end (delta: -86.9MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-03-18 21:02:25,347 INFO L158 Benchmark]: TraceAbstraction took 42184.46ms. Allocated memory was 219.2MB in the beginning and 268.4MB in the end (delta: 49.3MB). Free memory was 191.3MB in the beginning and 199.2MB in the end (delta: -7.9MB). Peak memory consumption was 40.8MB. Max. memory is 8.0GB. [2022-03-18 21:02:25,347 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 182.5MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.53ms. Allocated memory is still 182.5MB. Free memory was 130.9MB in the beginning and 148.8MB in the end (delta: -18.0MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.20ms. Allocated memory is still 182.5MB. Free memory was 148.8MB in the beginning and 145.3MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 750.80ms. Allocated memory is still 182.5MB. Free memory was 145.3MB in the beginning and 105.4MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * IcfgTransformer took 60.55ms. Allocated memory was 182.5MB in the beginning and 219.2MB in the end (delta: 36.7MB). Free memory was 105.4MB in the beginning and 192.3MB in the end (delta: -86.9MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * TraceAbstraction took 42184.46ms. Allocated memory was 219.2MB in the beginning and 268.4MB in the end (delta: 49.3MB). Free memory was 191.3MB in the beginning and 199.2MB in the end (delta: -7.9MB). Peak memory consumption was 40.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 56]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 27 procedures, 295 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.1s, OverallIterations: 47, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 31.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14846 SdHoareTripleChecker+Valid, 26.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14666 mSDsluCounter, 50849 SdHoareTripleChecker+Invalid, 22.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37802 mSDsCounter, 6507 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48221 IncrementalHoareTripleChecker+Invalid, 54728 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6507 mSolverCounterUnsat, 13047 mSDtfsCounter, 48221 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1716 GetRequests, 1005 SyntacticMatches, 9 SemanticMatches, 702 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1609 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1085occurred in iteration=8, InterpolantAutomatonStates: 542, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 47 MinimizatonAttempts, 2092 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 3800 NumberOfCodeBlocks, 3800 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 3751 ConstructedInterpolants, 0 QuantifiedInterpolants, 14828 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2654 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 49 InterpolantComputations, 47 PerfectInterpolantSequences, 835/847 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-18 21:02:25,383 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...