/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-b030c9e [2022-03-20 07:25:45,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 07:25:45,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 07:25:45,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 07:25:45,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 07:25:45,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 07:25:45,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 07:25:45,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 07:25:45,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 07:25:45,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 07:25:45,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 07:25:45,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 07:25:45,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 07:25:45,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 07:25:45,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 07:25:45,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 07:25:45,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 07:25:45,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 07:25:45,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 07:25:45,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 07:25:45,577 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 07:25:45,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 07:25:45,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 07:25:45,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 07:25:45,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 07:25:45,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 07:25:45,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 07:25:45,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 07:25:45,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 07:25:45,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 07:25:45,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 07:25:45,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 07:25:45,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 07:25:45,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 07:25:45,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 07:25:45,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 07:25:45,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 07:25:45,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 07:25:45,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 07:25:45,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 07:25:45,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 07:25:45,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 07:25:45,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 07:25:45,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 07:25:45,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 07:25:45,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 07:25:45,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 07:25:45,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 07:25:45,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 07:25:45,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 07:25:45,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 07:25:45,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 07:25:45,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 07:25:45,612 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 07:25:45,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 07:25:45,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 07:25:45,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 07:25:45,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 07:25:45,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 07:25:45,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 07:25:45,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 07:25:45,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 07:25:45,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 07:25:45,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 07:25:45,613 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 07:25:45,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 07:25:45,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 07:25:45,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 07:25:45,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 07:25:45,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 07:25:45,858 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 07:25:45,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-20 07:25:45,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a59ceae/cd81370501604b0d8a4d1c4d31f8c18a/FLAGc39b552fd [2022-03-20 07:25:46,369 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 07:25:46,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-20 07:25:46,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a59ceae/cd81370501604b0d8a4d1c4d31f8c18a/FLAGc39b552fd [2022-03-20 07:25:46,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a59ceae/cd81370501604b0d8a4d1c4d31f8c18a [2022-03-20 07:25:46,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 07:25:46,728 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 07:25:46,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 07:25:46,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 07:25:46,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 07:25:46,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:25:46" (1/1) ... [2022-03-20 07:25:46,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4216b5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:46, skipping insertion in model container [2022-03-20 07:25:46,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:25:46" (1/1) ... [2022-03-20 07:25:46,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 07:25:46,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 07:25:46,965 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] [2022-03-20 07:25:47,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 07:25:47,081 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 07:25:47,091 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] [2022-03-20 07:25:47,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 07:25:47,173 INFO L208 MainTranslator]: Completed translation [2022-03-20 07:25:47,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:47 WrapperNode [2022-03-20 07:25:47,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 07:25:47,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 07:25:47,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 07:25:47,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 07:25:47,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:47" (1/1) ... [2022-03-20 07:25:47,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:47" (1/1) ... [2022-03-20 07:25:47,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:47" (1/1) ... [2022-03-20 07:25:47,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:47" (1/1) ... [2022-03-20 07:25:47,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:47" (1/1) ... [2022-03-20 07:25:47,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:47" (1/1) ... [2022-03-20 07:25:47,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:47" (1/1) ... [2022-03-20 07:25:47,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 07:25:47,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 07:25:47,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 07:25:47,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 07:25:47,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:47" (1/1) ... [2022-03-20 07:25:47,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 07:25:47,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:25:47,296 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) [2022-03-20 07:25:47,304 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 [2022-03-20 07:25:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2022-03-20 07:25:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 07:25:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2022-03-20 07:25:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 07:25:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 07:25:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 07:25:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 07:25:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 07:25:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 07:25:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 07:25:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 07:25:47,486 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 07:25:47,492 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 07:25:47,557 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:47,674 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-20 07:25:47,674 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-20 07:25:47,681 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:47,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-20 07:25:47,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-20 07:25:47,717 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:47,732 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 07:25:47,733 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 07:25:47,739 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:47,747 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 07:25:47,748 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 07:25:47,907 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:47,936 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-20 07:25:47,936 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-20 07:25:47,956 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 07:25:47,963 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-20 07:25:47,964 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-20 07:25:47,990 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 07:25:47,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 07:25:47,997 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 07:25:47,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:25:47 BoogieIcfgContainer [2022-03-20 07:25:47,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 07:25:47,999 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 07:25:47,999 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 07:25:48,000 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 07:25:48,002 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:25:47" (1/1) ... [2022-03-20 07:25:48,003 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 07:25:48,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 07:25:48 BasicIcfg [2022-03-20 07:25:48,028 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 07:25:48,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 07:25:48,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 07:25:48,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 07:25:48,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 07:25:46" (1/4) ... [2022-03-20 07:25:48,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42908a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:25:48, skipping insertion in model container [2022-03-20 07:25:48,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:25:47" (2/4) ... [2022-03-20 07:25:48,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42908a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:25:48, skipping insertion in model container [2022-03-20 07:25:48,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:25:47" (3/4) ... [2022-03-20 07:25:48,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42908a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 07:25:48, skipping insertion in model container [2022-03-20 07:25:48,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 07:25:48" (4/4) ... [2022-03-20 07:25:48,033 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.cJordan [2022-03-20 07:25:48,037 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 07:25:48,037 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 07:25:48,069 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 07:25:48,073 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 [2022-03-20 07:25:48,074 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 07:25:48,088 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) [2022-03-20 07:25:48,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-20 07:25:48,095 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:48,095 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:48,096 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:48,099 INFO L85 PathProgramCache]: Analyzing trace with hash 13220813, now seen corresponding path program 1 times [2022-03-20 07:25:48,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:48,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261607703] [2022-03-20 07:25:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:48,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:48,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:48,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:48,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:48,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261607703] [2022-03-20 07:25:48,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261607703] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:48,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:48,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 07:25:48,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568948570] [2022-03-20 07:25:48,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:48,492 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 07:25:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:48,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 07:25:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 07:25:48,521 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) [2022-03-20 07:25:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:49,224 INFO L93 Difference]: Finished difference Result 342 states and 472 transitions. [2022-03-20 07:25:49,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:25:49,226 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 [2022-03-20 07:25:49,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:49,236 INFO L225 Difference]: With dead ends: 342 [2022-03-20 07:25:49,236 INFO L226 Difference]: Without dead ends: 326 [2022-03-20 07:25:49,238 INFO L912 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 [2022-03-20 07:25:49,240 INFO L913 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:49,241 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 597 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 07:25:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-20 07:25:49,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2022-03-20 07:25:49,282 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) [2022-03-20 07:25:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2022-03-20 07:25:49,284 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 20 [2022-03-20 07:25:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:49,285 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2022-03-20 07:25:49,285 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) [2022-03-20 07:25:49,285 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2022-03-20 07:25:49,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-20 07:25:49,286 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:49,286 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:49,286 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 07:25:49,286 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:49,287 INFO L85 PathProgramCache]: Analyzing trace with hash 690648180, now seen corresponding path program 1 times [2022-03-20 07:25:49,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:49,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867181918] [2022-03-20 07:25:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:49,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:49,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:49,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:49,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:49,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:49,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867181918] [2022-03-20 07:25:49,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867181918] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:49,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:49,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 07:25:49,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376314584] [2022-03-20 07:25:49,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:49,413 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 07:25:49,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:49,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 07:25:49,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:25:49,414 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) [2022-03-20 07:25:50,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:50,837 INFO L93 Difference]: Finished difference Result 508 states and 702 transitions. [2022-03-20 07:25:50,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:25:50,837 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 [2022-03-20 07:25:50,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:50,845 INFO L225 Difference]: With dead ends: 508 [2022-03-20 07:25:50,845 INFO L226 Difference]: Without dead ends: 507 [2022-03-20 07:25:50,849 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-20 07:25:50,850 INFO L913 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, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:50,850 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 716 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 07:25:50,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-03-20 07:25:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2022-03-20 07:25:50,894 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) [2022-03-20 07:25:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2022-03-20 07:25:50,899 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 25 [2022-03-20 07:25:50,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:50,899 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2022-03-20 07:25:50,900 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) [2022-03-20 07:25:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2022-03-20 07:25:50,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 07:25:50,901 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:50,901 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:50,901 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 07:25:50,901 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:50,902 INFO L85 PathProgramCache]: Analyzing trace with hash 543429165, now seen corresponding path program 1 times [2022-03-20 07:25:50,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:50,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590249545] [2022-03-20 07:25:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:50,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:50,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:51,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:51,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:51,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590249545] [2022-03-20 07:25:51,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590249545] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:51,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:51,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 07:25:51,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119598963] [2022-03-20 07:25:51,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:51,052 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 07:25:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 07:25:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:25:51,052 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) [2022-03-20 07:25:51,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:51,990 INFO L93 Difference]: Finished difference Result 690 states and 979 transitions. [2022-03-20 07:25:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:25:51,991 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 [2022-03-20 07:25:51,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:51,994 INFO L225 Difference]: With dead ends: 690 [2022-03-20 07:25:51,994 INFO L226 Difference]: Without dead ends: 690 [2022-03-20 07:25:51,994 INFO L912 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 [2022-03-20 07:25:51,995 INFO L913 BasicCegarLoop]: 402 mSDtfsCounter, 501 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:51,995 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 610 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:25:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-20 07:25:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 618. [2022-03-20 07:25:52,014 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) [2022-03-20 07:25:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 888 transitions. [2022-03-20 07:25:52,018 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 888 transitions. Word has length 31 [2022-03-20 07:25:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:52,019 INFO L478 AbstractCegarLoop]: Abstraction has 618 states and 888 transitions. [2022-03-20 07:25:52,019 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) [2022-03-20 07:25:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 888 transitions. [2022-03-20 07:25:52,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-20 07:25:52,020 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:52,020 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:52,020 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 07:25:52,021 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:52,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1394943520, now seen corresponding path program 1 times [2022-03-20 07:25:52,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:52,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483491360] [2022-03-20 07:25:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:52,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:52,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:52,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:52,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483491360] [2022-03-20 07:25:52,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483491360] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:52,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:52,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 07:25:52,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190146072] [2022-03-20 07:25:52,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:52,125 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 07:25:52,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:52,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 07:25:52,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:25:52,126 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) [2022-03-20 07:25:52,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:52,715 INFO L93 Difference]: Finished difference Result 661 states and 947 transitions. [2022-03-20 07:25:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:25:52,716 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 [2022-03-20 07:25:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:52,719 INFO L225 Difference]: With dead ends: 661 [2022-03-20 07:25:52,719 INFO L226 Difference]: Without dead ends: 661 [2022-03-20 07:25:52,719 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-20 07:25:52,720 INFO L913 BasicCegarLoop]: 340 mSDtfsCounter, 224 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2022-03-20 07:25:52,720 INFO L914 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] [2022-03-20 07:25:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-03-20 07:25:52,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 628. [2022-03-20 07:25:52,734 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) [2022-03-20 07:25:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2022-03-20 07:25:52,738 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 36 [2022-03-20 07:25:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:52,738 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2022-03-20 07:25:52,738 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) [2022-03-20 07:25:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2022-03-20 07:25:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 07:25:52,740 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:52,740 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:52,740 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 07:25:52,740 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash -455202915, now seen corresponding path program 1 times [2022-03-20 07:25:52,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:52,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380154745] [2022-03-20 07:25:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:52,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:52,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:52,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:25:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:52,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:25:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:52,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:52,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380154745] [2022-03-20 07:25:52,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380154745] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:52,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:52,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 07:25:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146367786] [2022-03-20 07:25:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:52,866 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 07:25:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 07:25:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-20 07:25:52,866 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) [2022-03-20 07:25:53,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:53,343 INFO L93 Difference]: Finished difference Result 705 states and 1001 transitions. [2022-03-20 07:25:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 07:25:53,343 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 [2022-03-20 07:25:53,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:53,346 INFO L225 Difference]: With dead ends: 705 [2022-03-20 07:25:53,346 INFO L226 Difference]: Without dead ends: 705 [2022-03-20 07:25:53,347 INFO L912 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 [2022-03-20 07:25:53,347 INFO L913 BasicCegarLoop]: 320 mSDtfsCounter, 415 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-03-20 07:25:53,347 INFO L914 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] [2022-03-20 07:25:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-20 07:25:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-20 07:25:53,361 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) [2022-03-20 07:25:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 937 transitions. [2022-03-20 07:25:53,365 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 937 transitions. Word has length 39 [2022-03-20 07:25:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:53,365 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 937 transitions. [2022-03-20 07:25:53,365 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) [2022-03-20 07:25:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 937 transitions. [2022-03-20 07:25:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 07:25:53,367 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:53,367 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:53,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 07:25:53,367 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:53,367 INFO L85 PathProgramCache]: Analyzing trace with hash -454217859, now seen corresponding path program 1 times [2022-03-20 07:25:53,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:53,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201791361] [2022-03-20 07:25:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:53,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:53,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:53,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:25:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:25:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:53,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:53,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201791361] [2022-03-20 07:25:53,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201791361] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:53,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:53,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:25:53,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426791167] [2022-03-20 07:25:53,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:53,537 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:25:53,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:53,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:25:53,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:25:53,538 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) [2022-03-20 07:25:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:54,664 INFO L93 Difference]: Finished difference Result 705 states and 1000 transitions. [2022-03-20 07:25:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:25:54,665 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 [2022-03-20 07:25:54,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:54,668 INFO L225 Difference]: With dead ends: 705 [2022-03-20 07:25:54,668 INFO L226 Difference]: Without dead ends: 705 [2022-03-20 07:25:54,669 INFO L912 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 [2022-03-20 07:25:54,669 INFO L913 BasicCegarLoop]: 302 mSDtfsCounter, 559 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:54,670 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 760 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 07:25:54,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-20 07:25:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-20 07:25:54,685 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) [2022-03-20 07:25:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 936 transitions. [2022-03-20 07:25:54,688 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 936 transitions. Word has length 39 [2022-03-20 07:25:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:54,688 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 936 transitions. [2022-03-20 07:25:54,688 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) [2022-03-20 07:25:54,689 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 936 transitions. [2022-03-20 07:25:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-20 07:25:54,690 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:54,690 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:54,690 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 07:25:54,690 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:54,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:54,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1225775968, now seen corresponding path program 1 times [2022-03-20 07:25:54,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:54,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242102310] [2022-03-20 07:25:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:54,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:54,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:54,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:25:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:25:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:54,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:54,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242102310] [2022-03-20 07:25:54,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242102310] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:54,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:54,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:25:54,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780507294] [2022-03-20 07:25:54,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:54,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:25:54,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:54,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:25:54,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:25:54,900 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) [2022-03-20 07:25:55,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:55,951 INFO L93 Difference]: Finished difference Result 705 states and 999 transitions. [2022-03-20 07:25:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:25:55,951 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 [2022-03-20 07:25:55,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:55,954 INFO L225 Difference]: With dead ends: 705 [2022-03-20 07:25:55,954 INFO L226 Difference]: Without dead ends: 705 [2022-03-20 07:25:55,955 INFO L912 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 [2022-03-20 07:25:55,955 INFO L913 BasicCegarLoop]: 303 mSDtfsCounter, 1133 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:55,956 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 865 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:25:55,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-20 07:25:55,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-20 07:25:55,971 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) [2022-03-20 07:25:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2022-03-20 07:25:55,973 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 40 [2022-03-20 07:25:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:55,974 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2022-03-20 07:25:55,974 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) [2022-03-20 07:25:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2022-03-20 07:25:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-20 07:25:55,975 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:55,975 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:55,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 07:25:55,975 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:55,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:55,975 INFO L85 PathProgramCache]: Analyzing trace with hash 636808681, now seen corresponding path program 1 times [2022-03-20 07:25:55,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:55,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779313327] [2022-03-20 07:25:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:55,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:25:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:25:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:56,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:56,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779313327] [2022-03-20 07:25:56,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779313327] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:56,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:56,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 07:25:56,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305694579] [2022-03-20 07:25:56,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:56,107 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 07:25:56,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:56,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 07:25:56,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-20 07:25:56,108 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) [2022-03-20 07:25:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:56,687 INFO L93 Difference]: Finished difference Result 1186 states and 1741 transitions. [2022-03-20 07:25:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 07:25:56,688 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 [2022-03-20 07:25:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:56,692 INFO L225 Difference]: With dead ends: 1186 [2022-03-20 07:25:56,692 INFO L226 Difference]: Without dead ends: 1186 [2022-03-20 07:25:56,693 INFO L912 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 [2022-03-20 07:25:56,693 INFO L913 BasicCegarLoop]: 392 mSDtfsCounter, 749 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:56,694 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 719 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 07:25:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-20 07:25:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-03-20 07:25:56,717 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) [2022-03-20 07:25:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1602 transitions. [2022-03-20 07:25:56,722 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1602 transitions. Word has length 41 [2022-03-20 07:25:56,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:56,722 INFO L478 AbstractCegarLoop]: Abstraction has 1085 states and 1602 transitions. [2022-03-20 07:25:56,722 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) [2022-03-20 07:25:56,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1602 transitions. [2022-03-20 07:25:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 07:25:56,723 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:56,723 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:56,723 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 07:25:56,723 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:56,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1732782333, now seen corresponding path program 1 times [2022-03-20 07:25:56,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:56,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728746769] [2022-03-20 07:25:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 07:25:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:25:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:56,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:56,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728746769] [2022-03-20 07:25:56,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728746769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:56,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:56,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 07:25:56,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865309638] [2022-03-20 07:25:56,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:56,872 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 07:25:56,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:56,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 07:25:56,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-20 07:25:56,873 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) [2022-03-20 07:25:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:57,765 INFO L93 Difference]: Finished difference Result 1167 states and 1721 transitions. [2022-03-20 07:25:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 07:25:57,765 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 [2022-03-20 07:25:57,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:57,770 INFO L225 Difference]: With dead ends: 1167 [2022-03-20 07:25:57,770 INFO L226 Difference]: Without dead ends: 1148 [2022-03-20 07:25:57,770 INFO L912 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 [2022-03-20 07:25:57,770 INFO L913 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:57,771 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 1134 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 07:25:57,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-20 07:25:57,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1078. [2022-03-20 07:25:57,800 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) [2022-03-20 07:25:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1593 transitions. [2022-03-20 07:25:57,805 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1593 transitions. Word has length 42 [2022-03-20 07:25:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:57,805 INFO L478 AbstractCegarLoop]: Abstraction has 1078 states and 1593 transitions. [2022-03-20 07:25:57,805 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) [2022-03-20 07:25:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1593 transitions. [2022-03-20 07:25:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 07:25:57,806 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:57,806 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:57,806 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 07:25:57,806 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1415168827, now seen corresponding path program 1 times [2022-03-20 07:25:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:57,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436205162] [2022-03-20 07:25:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:57,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:57,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:57,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:57,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436205162] [2022-03-20 07:25:57,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436205162] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:57,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:57,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 07:25:57,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071277638] [2022-03-20 07:25:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:57,905 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 07:25:57,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:57,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 07:25:57,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 07:25:57,905 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) [2022-03-20 07:25:58,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:58,269 INFO L93 Difference]: Finished difference Result 599 states and 851 transitions. [2022-03-20 07:25:58,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:25:58,269 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 [2022-03-20 07:25:58,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:58,271 INFO L225 Difference]: With dead ends: 599 [2022-03-20 07:25:58,271 INFO L226 Difference]: Without dead ends: 599 [2022-03-20 07:25:58,272 INFO L912 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 [2022-03-20 07:25:58,272 INFO L913 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 [2022-03-20 07:25:58,272 INFO L914 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] [2022-03-20 07:25:58,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-03-20 07:25:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 598. [2022-03-20 07:25:58,283 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) [2022-03-20 07:25:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 850 transitions. [2022-03-20 07:25:58,286 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 850 transitions. Word has length 45 [2022-03-20 07:25:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:58,286 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 850 transitions. [2022-03-20 07:25:58,286 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) [2022-03-20 07:25:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 850 transitions. [2022-03-20 07:25:58,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-20 07:25:58,287 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:58,287 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:58,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 07:25:58,288 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:58,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:58,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1870236117, now seen corresponding path program 1 times [2022-03-20 07:25:58,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:58,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366752907] [2022-03-20 07:25:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:58,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 07:25:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:58,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:25:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:58,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:58,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366752907] [2022-03-20 07:25:58,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366752907] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:58,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:58,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 07:25:58,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279442499] [2022-03-20 07:25:58,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:58,461 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 07:25:58,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:58,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 07:25:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-20 07:25:58,462 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) [2022-03-20 07:25:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:59,300 INFO L93 Difference]: Finished difference Result 630 states and 890 transitions. [2022-03-20 07:25:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:25:59,301 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 [2022-03-20 07:25:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:59,304 INFO L225 Difference]: With dead ends: 630 [2022-03-20 07:25:59,304 INFO L226 Difference]: Without dead ends: 608 [2022-03-20 07:25:59,304 INFO L912 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 [2022-03-20 07:25:59,304 INFO L913 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 [2022-03-20 07:25:59,305 INFO L914 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] [2022-03-20 07:25:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-03-20 07:25:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2022-03-20 07:25:59,315 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) [2022-03-20 07:25:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 845 transitions. [2022-03-20 07:25:59,317 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 845 transitions. Word has length 46 [2022-03-20 07:25:59,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:25:59,317 INFO L478 AbstractCegarLoop]: Abstraction has 596 states and 845 transitions. [2022-03-20 07:25:59,317 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) [2022-03-20 07:25:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 845 transitions. [2022-03-20 07:25:59,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-20 07:25:59,318 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:25:59,318 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:25:59,318 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 07:25:59,318 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:25:59,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:25:59,318 INFO L85 PathProgramCache]: Analyzing trace with hash -961233056, now seen corresponding path program 1 times [2022-03-20 07:25:59,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:25:59,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078437136] [2022-03-20 07:25:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:25:59,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:25:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:25:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:25:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:25:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 07:25:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:25:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:25:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:25:59,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:25:59,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078437136] [2022-03-20 07:25:59,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078437136] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:25:59,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:25:59,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 07:25:59,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393397699] [2022-03-20 07:25:59,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:25:59,443 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 07:25:59,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:25:59,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 07:25:59,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-20 07:25:59,444 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) [2022-03-20 07:25:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:25:59,974 INFO L93 Difference]: Finished difference Result 826 states and 1225 transitions. [2022-03-20 07:25:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 07:25:59,974 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 [2022-03-20 07:25:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:25:59,977 INFO L225 Difference]: With dead ends: 826 [2022-03-20 07:25:59,978 INFO L226 Difference]: Without dead ends: 826 [2022-03-20 07:25:59,978 INFO L912 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 [2022-03-20 07:25:59,978 INFO L913 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:25:59,978 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 636 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 07:25:59,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-03-20 07:25:59,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 665. [2022-03-20 07:25:59,991 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) [2022-03-20 07:26:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 948 transitions. [2022-03-20 07:26:00,022 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 948 transitions. Word has length 46 [2022-03-20 07:26:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:00,022 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 948 transitions. [2022-03-20 07:26:00,022 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) [2022-03-20 07:26:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 948 transitions. [2022-03-20 07:26:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 07:26:00,023 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:00,023 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:00,023 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-20 07:26:00,023 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:00,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash -91170375, now seen corresponding path program 1 times [2022-03-20 07:26:00,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:00,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434852290] [2022-03-20 07:26:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:00,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 07:26:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:00,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:00,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434852290] [2022-03-20 07:26:00,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434852290] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:00,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:00,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 07:26:00,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872785272] [2022-03-20 07:26:00,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:00,146 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 07:26:00,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:00,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 07:26:00,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-20 07:26:00,147 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) [2022-03-20 07:26:00,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:00,823 INFO L93 Difference]: Finished difference Result 462 states and 599 transitions. [2022-03-20 07:26:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 07:26:00,823 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 [2022-03-20 07:26:00,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:00,825 INFO L225 Difference]: With dead ends: 462 [2022-03-20 07:26:00,825 INFO L226 Difference]: Without dead ends: 462 [2022-03-20 07:26:00,825 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:00,825 INFO L913 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:00,825 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 677 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 07:26:00,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-03-20 07:26:00,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2022-03-20 07:26:00,832 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) [2022-03-20 07:26:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 578 transitions. [2022-03-20 07:26:00,833 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 578 transitions. Word has length 49 [2022-03-20 07:26:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:00,833 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 578 transitions. [2022-03-20 07:26:00,833 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) [2022-03-20 07:26:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 578 transitions. [2022-03-20 07:26:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 07:26:00,834 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:00,834 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:00,834 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-20 07:26:00,834 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash 298099852, now seen corresponding path program 1 times [2022-03-20 07:26:00,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:00,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054071243] [2022-03-20 07:26:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:00,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 07:26:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:00,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:00,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054071243] [2022-03-20 07:26:00,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054071243] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:00,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:00,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 07:26:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292837699] [2022-03-20 07:26:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:00,992 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 07:26:00,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 07:26:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:26:00,993 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) [2022-03-20 07:26:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:01,829 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2022-03-20 07:26:01,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:26:01,829 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 [2022-03-20 07:26:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:01,831 INFO L225 Difference]: With dead ends: 454 [2022-03-20 07:26:01,831 INFO L226 Difference]: Without dead ends: 453 [2022-03-20 07:26:01,831 INFO L912 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 [2022-03-20 07:26:01,832 INFO L913 BasicCegarLoop]: 284 mSDtfsCounter, 235 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-20 07:26:01,832 INFO L914 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] [2022-03-20 07:26:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-20 07:26:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2022-03-20 07:26:01,839 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) [2022-03-20 07:26:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 589 transitions. [2022-03-20 07:26:01,840 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 589 transitions. Word has length 47 [2022-03-20 07:26:01,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:01,841 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 589 transitions. [2022-03-20 07:26:01,841 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) [2022-03-20 07:26:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 589 transitions. [2022-03-20 07:26:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 07:26:01,841 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:01,841 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:01,841 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 07:26:01,841 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash 298068108, now seen corresponding path program 1 times [2022-03-20 07:26:01,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:01,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506081071] [2022-03-20 07:26:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:01,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 07:26:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:02,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:02,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506081071] [2022-03-20 07:26:02,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506081071] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:02,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:02,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 07:26:02,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029780876] [2022-03-20 07:26:02,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:02,027 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 07:26:02,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:02,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 07:26:02,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:26:02,028 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) [2022-03-20 07:26:02,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:02,620 INFO L93 Difference]: Finished difference Result 487 states and 652 transitions. [2022-03-20 07:26:02,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 07:26:02,620 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 [2022-03-20 07:26:02,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:02,622 INFO L225 Difference]: With dead ends: 487 [2022-03-20 07:26:02,622 INFO L226 Difference]: Without dead ends: 472 [2022-03-20 07:26:02,624 INFO L912 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 [2022-03-20 07:26:02,625 INFO L913 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 [2022-03-20 07:26:02,625 INFO L914 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] [2022-03-20 07:26:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-03-20 07:26:02,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2022-03-20 07:26:02,634 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) [2022-03-20 07:26:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2022-03-20 07:26:02,636 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 47 [2022-03-20 07:26:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:02,636 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2022-03-20 07:26:02,636 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) [2022-03-20 07:26:02,636 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2022-03-20 07:26:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-20 07:26:02,637 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:02,637 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:02,637 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 07:26:02,637 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash -309998534, now seen corresponding path program 1 times [2022-03-20 07:26:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:02,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7049394] [2022-03-20 07:26:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:02,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:02,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:02,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:02,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 07:26:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:02,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:02,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:02,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7049394] [2022-03-20 07:26:02,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7049394] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:02,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:02,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 07:26:02,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959926609] [2022-03-20 07:26:02,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:02,781 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 07:26:02,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 07:26:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-20 07:26:02,781 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) [2022-03-20 07:26:03,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:03,974 INFO L93 Difference]: Finished difference Result 590 states and 807 transitions. [2022-03-20 07:26:03,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 07:26:03,975 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 [2022-03-20 07:26:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:03,977 INFO L225 Difference]: With dead ends: 590 [2022-03-20 07:26:03,977 INFO L226 Difference]: Without dead ends: 575 [2022-03-20 07:26:03,978 INFO L912 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 [2022-03-20 07:26:03,978 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 846 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:03,978 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 801 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 07:26:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-20 07:26:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 444. [2022-03-20 07:26:03,989 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) [2022-03-20 07:26:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 583 transitions. [2022-03-20 07:26:03,991 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 583 transitions. Word has length 48 [2022-03-20 07:26:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:03,991 INFO L478 AbstractCegarLoop]: Abstraction has 444 states and 583 transitions. [2022-03-20 07:26:03,991 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) [2022-03-20 07:26:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 583 transitions. [2022-03-20 07:26:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 07:26:03,992 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:03,992 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:03,992 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 07:26:03,992 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:03,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash 328516868, now seen corresponding path program 1 times [2022-03-20 07:26:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:03,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120685660] [2022-03-20 07:26:03,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:03,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 07:26:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:04,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:04,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120685660] [2022-03-20 07:26:04,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120685660] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:04,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:04,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:04,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581358852] [2022-03-20 07:26:04,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:04,137 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:04,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:04,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:04,138 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) [2022-03-20 07:26:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:04,753 INFO L93 Difference]: Finished difference Result 455 states and 596 transitions. [2022-03-20 07:26:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:26:04,754 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 [2022-03-20 07:26:04,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:04,755 INFO L225 Difference]: With dead ends: 455 [2022-03-20 07:26:04,755 INFO L226 Difference]: Without dead ends: 427 [2022-03-20 07:26:04,756 INFO L912 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 [2022-03-20 07:26:04,756 INFO L913 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:04,756 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 1515 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 07:26:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-20 07:26:04,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-03-20 07:26:04,762 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) [2022-03-20 07:26:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 562 transitions. [2022-03-20 07:26:04,763 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 562 transitions. Word has length 49 [2022-03-20 07:26:04,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:04,763 INFO L478 AbstractCegarLoop]: Abstraction has 427 states and 562 transitions. [2022-03-20 07:26:04,763 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) [2022-03-20 07:26:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 562 transitions. [2022-03-20 07:26:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 07:26:04,763 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:04,764 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:04,764 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 07:26:04,764 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:04,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:04,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1720991068, now seen corresponding path program 1 times [2022-03-20 07:26:04,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:04,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632538521] [2022-03-20 07:26:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:04,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 07:26:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 07:26:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:04,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:04,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632538521] [2022-03-20 07:26:04,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632538521] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:04,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:04,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 07:26:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495124890] [2022-03-20 07:26:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:04,898 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 07:26:04,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 07:26:04,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-20 07:26:04,899 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) [2022-03-20 07:26:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:05,592 INFO L93 Difference]: Finished difference Result 453 states and 597 transitions. [2022-03-20 07:26:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:26:05,593 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 [2022-03-20 07:26:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:05,595 INFO L225 Difference]: With dead ends: 453 [2022-03-20 07:26:05,595 INFO L226 Difference]: Without dead ends: 423 [2022-03-20 07:26:05,595 INFO L912 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 [2022-03-20 07:26:05,595 INFO L913 BasicCegarLoop]: 271 mSDtfsCounter, 115 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:05,595 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1070 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 07:26:05,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-20 07:26:05,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 409. [2022-03-20 07:26:05,601 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) [2022-03-20 07:26:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 542 transitions. [2022-03-20 07:26:05,602 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 542 transitions. Word has length 50 [2022-03-20 07:26:05,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:05,602 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 542 transitions. [2022-03-20 07:26:05,602 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) [2022-03-20 07:26:05,602 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 542 transitions. [2022-03-20 07:26:05,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 07:26:05,603 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:05,603 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:05,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-20 07:26:05,603 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1090499838, now seen corresponding path program 1 times [2022-03-20 07:26:05,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:05,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123669447] [2022-03-20 07:26:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:05,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:05,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:05,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:05,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 07:26:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:05,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:05,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:05,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123669447] [2022-03-20 07:26:05,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123669447] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:05,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:05,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 07:26:05,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736699688] [2022-03-20 07:26:05,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:05,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 07:26:05,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:05,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 07:26:05,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-20 07:26:05,740 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) [2022-03-20 07:26:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:07,269 INFO L93 Difference]: Finished difference Result 600 states and 867 transitions. [2022-03-20 07:26:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 07:26:07,269 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 [2022-03-20 07:26:07,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:07,271 INFO L225 Difference]: With dead ends: 600 [2022-03-20 07:26:07,272 INFO L226 Difference]: Without dead ends: 600 [2022-03-20 07:26:07,272 INFO L912 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 [2022-03-20 07:26:07,272 INFO L913 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, 1.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:07,272 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 1243 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-20 07:26:07,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-03-20 07:26:07,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 534. [2022-03-20 07:26:07,281 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) [2022-03-20 07:26:07,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 769 transitions. [2022-03-20 07:26:07,283 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 769 transitions. Word has length 50 [2022-03-20 07:26:07,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:07,283 INFO L478 AbstractCegarLoop]: Abstraction has 534 states and 769 transitions. [2022-03-20 07:26:07,283 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) [2022-03-20 07:26:07,283 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 769 transitions. [2022-03-20 07:26:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 07:26:07,287 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:07,287 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:07,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-20 07:26:07,287 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:07,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:07,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1506717387, now seen corresponding path program 1 times [2022-03-20 07:26:07,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:07,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135199014] [2022-03-20 07:26:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:07,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:07,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 07:26:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:07,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:07,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135199014] [2022-03-20 07:26:07,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135199014] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:07,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:07,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 07:26:07,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810880765] [2022-03-20 07:26:07,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:07,441 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 07:26:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 07:26:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-20 07:26:07,442 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) [2022-03-20 07:26:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:08,052 INFO L93 Difference]: Finished difference Result 555 states and 796 transitions. [2022-03-20 07:26:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:26:08,053 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 [2022-03-20 07:26:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:08,055 INFO L225 Difference]: With dead ends: 555 [2022-03-20 07:26:08,055 INFO L226 Difference]: Without dead ends: 555 [2022-03-20 07:26:08,055 INFO L912 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 [2022-03-20 07:26:08,055 INFO L913 BasicCegarLoop]: 240 mSDtfsCounter, 616 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-03-20 07:26:08,056 INFO L914 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] [2022-03-20 07:26:08,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-20 07:26:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 537. [2022-03-20 07:26:08,065 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) [2022-03-20 07:26:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 773 transitions. [2022-03-20 07:26:08,066 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 773 transitions. Word has length 51 [2022-03-20 07:26:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:08,066 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 773 transitions. [2022-03-20 07:26:08,066 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) [2022-03-20 07:26:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 773 transitions. [2022-03-20 07:26:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 07:26:08,067 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:08,067 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:08,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-20 07:26:08,067 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1791177556, now seen corresponding path program 1 times [2022-03-20 07:26:08,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:08,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486897922] [2022-03-20 07:26:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:08,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 07:26:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:08,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:08,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486897922] [2022-03-20 07:26:08,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486897922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:08,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:08,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:08,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678080231] [2022-03-20 07:26:08,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:08,260 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:08,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:08,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:08,261 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) [2022-03-20 07:26:09,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:09,094 INFO L93 Difference]: Finished difference Result 624 states and 937 transitions. [2022-03-20 07:26:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:26:09,094 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 [2022-03-20 07:26:09,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:09,097 INFO L225 Difference]: With dead ends: 624 [2022-03-20 07:26:09,097 INFO L226 Difference]: Without dead ends: 624 [2022-03-20 07:26:09,097 INFO L912 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 [2022-03-20 07:26:09,097 INFO L913 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 [2022-03-20 07:26:09,097 INFO L914 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] [2022-03-20 07:26:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-03-20 07:26:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 529. [2022-03-20 07:26:09,106 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) [2022-03-20 07:26:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 759 transitions. [2022-03-20 07:26:09,107 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 759 transitions. Word has length 51 [2022-03-20 07:26:09,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:09,107 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 759 transitions. [2022-03-20 07:26:09,108 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) [2022-03-20 07:26:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 759 transitions. [2022-03-20 07:26:09,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 07:26:09,108 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:09,108 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:09,108 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-20 07:26:09,108 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:09,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:09,109 INFO L85 PathProgramCache]: Analyzing trace with hash -50366668, now seen corresponding path program 1 times [2022-03-20 07:26:09,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:09,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664534408] [2022-03-20 07:26:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 07:26:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:09,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:09,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664534408] [2022-03-20 07:26:09,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664534408] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:09,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:09,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 07:26:09,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933642729] [2022-03-20 07:26:09,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:09,218 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 07:26:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:09,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 07:26:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-20 07:26:09,219 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) [2022-03-20 07:26:09,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:09,648 INFO L93 Difference]: Finished difference Result 701 states and 1080 transitions. [2022-03-20 07:26:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 07:26:09,648 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 [2022-03-20 07:26:09,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:09,651 INFO L225 Difference]: With dead ends: 701 [2022-03-20 07:26:09,651 INFO L226 Difference]: Without dead ends: 701 [2022-03-20 07:26:09,651 INFO L912 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 [2022-03-20 07:26:09,652 INFO L913 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 [2022-03-20 07:26:09,652 INFO L914 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] [2022-03-20 07:26:09,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-20 07:26:09,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 524. [2022-03-20 07:26:09,662 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) [2022-03-20 07:26:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 751 transitions. [2022-03-20 07:26:09,663 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 751 transitions. Word has length 51 [2022-03-20 07:26:09,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:09,663 INFO L478 AbstractCegarLoop]: Abstraction has 524 states and 751 transitions. [2022-03-20 07:26:09,663 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) [2022-03-20 07:26:09,663 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 751 transitions. [2022-03-20 07:26:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 07:26:09,664 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:09,664 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:09,664 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-20 07:26:09,664 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1529813192, now seen corresponding path program 1 times [2022-03-20 07:26:09,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:09,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454039042] [2022-03-20 07:26:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:09,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 07:26:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:09,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:09,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454039042] [2022-03-20 07:26:09,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454039042] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:09,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:09,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:09,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818884370] [2022-03-20 07:26:09,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:09,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:09,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:09,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:09,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:09,811 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) [2022-03-20 07:26:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:10,372 INFO L93 Difference]: Finished difference Result 544 states and 778 transitions. [2022-03-20 07:26:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:26:10,372 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 [2022-03-20 07:26:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:10,374 INFO L225 Difference]: With dead ends: 544 [2022-03-20 07:26:10,374 INFO L226 Difference]: Without dead ends: 543 [2022-03-20 07:26:10,375 INFO L912 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 [2022-03-20 07:26:10,375 INFO L913 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:10,375 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 1339 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 07:26:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-03-20 07:26:10,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2022-03-20 07:26:10,383 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) [2022-03-20 07:26:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 760 transitions. [2022-03-20 07:26:10,385 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 760 transitions. Word has length 52 [2022-03-20 07:26:10,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:10,385 INFO L478 AbstractCegarLoop]: Abstraction has 531 states and 760 transitions. [2022-03-20 07:26:10,386 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) [2022-03-20 07:26:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 760 transitions. [2022-03-20 07:26:10,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 07:26:10,386 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:10,386 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:10,386 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-20 07:26:10,386 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:10,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:10,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1529844936, now seen corresponding path program 1 times [2022-03-20 07:26:10,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:10,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057756996] [2022-03-20 07:26:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:10,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 07:26:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:10,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:10,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057756996] [2022-03-20 07:26:10,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057756996] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:10,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:10,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:10,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595962837] [2022-03-20 07:26:10,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:10,560 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:10,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:10,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:10,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:10,561 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) [2022-03-20 07:26:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:11,226 INFO L93 Difference]: Finished difference Result 559 states and 794 transitions. [2022-03-20 07:26:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 07:26:11,226 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 [2022-03-20 07:26:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:11,228 INFO L225 Difference]: With dead ends: 559 [2022-03-20 07:26:11,228 INFO L226 Difference]: Without dead ends: 538 [2022-03-20 07:26:11,228 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-20 07:26:11,228 INFO L913 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:11,229 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1449 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 07:26:11,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-20 07:26:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2022-03-20 07:26:11,236 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) [2022-03-20 07:26:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 758 transitions. [2022-03-20 07:26:11,237 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 758 transitions. Word has length 52 [2022-03-20 07:26:11,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:11,237 INFO L478 AbstractCegarLoop]: Abstraction has 530 states and 758 transitions. [2022-03-20 07:26:11,237 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) [2022-03-20 07:26:11,237 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 758 transitions. [2022-03-20 07:26:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 07:26:11,238 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:11,238 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:11,238 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-20 07:26:11,238 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:11,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:11,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1874017512, now seen corresponding path program 1 times [2022-03-20 07:26:11,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:11,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864711569] [2022-03-20 07:26:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:11,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:11,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:11,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:11,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:11,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 07:26:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 07:26:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:11,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:11,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864711569] [2022-03-20 07:26:11,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864711569] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:11,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:11,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 07:26:11,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696464387] [2022-03-20 07:26:11,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:11,353 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 07:26:11,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:11,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 07:26:11,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-20 07:26:11,354 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) [2022-03-20 07:26:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:11,903 INFO L93 Difference]: Finished difference Result 549 states and 800 transitions. [2022-03-20 07:26:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:26:11,903 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 [2022-03-20 07:26:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:11,905 INFO L225 Difference]: With dead ends: 549 [2022-03-20 07:26:11,905 INFO L226 Difference]: Without dead ends: 549 [2022-03-20 07:26:11,905 INFO L912 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 [2022-03-20 07:26:11,906 INFO L913 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:11,906 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 723 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 07:26:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-03-20 07:26:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 529. [2022-03-20 07:26:11,913 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) [2022-03-20 07:26:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 754 transitions. [2022-03-20 07:26:11,915 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 754 transitions. Word has length 58 [2022-03-20 07:26:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:11,915 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 754 transitions. [2022-03-20 07:26:11,918 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) [2022-03-20 07:26:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 754 transitions. [2022-03-20 07:26:11,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 07:26:11,919 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:11,919 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:11,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-20 07:26:11,919 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2132872221, now seen corresponding path program 1 times [2022-03-20 07:26:11,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:11,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537447959] [2022-03-20 07:26:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:11,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:11,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 07:26:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:12,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:12,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537447959] [2022-03-20 07:26:12,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537447959] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:12,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:12,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 07:26:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33663758] [2022-03-20 07:26:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:12,053 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 07:26:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:12,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 07:26:12,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-20 07:26:12,054 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) [2022-03-20 07:26:13,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:13,060 INFO L93 Difference]: Finished difference Result 671 states and 995 transitions. [2022-03-20 07:26:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 07:26:13,060 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 [2022-03-20 07:26:13,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:13,064 INFO L225 Difference]: With dead ends: 671 [2022-03-20 07:26:13,064 INFO L226 Difference]: Without dead ends: 639 [2022-03-20 07:26:13,064 INFO L912 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 [2022-03-20 07:26:13,066 INFO L913 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 [2022-03-20 07:26:13,067 INFO L914 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] [2022-03-20 07:26:13,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-20 07:26:13,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 560. [2022-03-20 07:26:13,076 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) [2022-03-20 07:26:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 824 transitions. [2022-03-20 07:26:13,078 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 824 transitions. Word has length 53 [2022-03-20 07:26:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:13,078 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 824 transitions. [2022-03-20 07:26:13,078 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) [2022-03-20 07:26:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 824 transitions. [2022-03-20 07:26:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 07:26:13,079 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:13,079 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:13,079 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-20 07:26:13,079 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:13,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash 983025775, now seen corresponding path program 1 times [2022-03-20 07:26:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:13,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138387765] [2022-03-20 07:26:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:13,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 07:26:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:13,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:13,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138387765] [2022-03-20 07:26:13,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138387765] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:13,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:13,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 07:26:13,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023239568] [2022-03-20 07:26:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:13,274 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 07:26:13,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:13,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 07:26:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:26:13,275 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) [2022-03-20 07:26:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:13,820 INFO L93 Difference]: Finished difference Result 390 states and 522 transitions. [2022-03-20 07:26:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 07:26:13,821 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 [2022-03-20 07:26:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:13,822 INFO L225 Difference]: With dead ends: 390 [2022-03-20 07:26:13,822 INFO L226 Difference]: Without dead ends: 390 [2022-03-20 07:26:13,822 INFO L912 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 [2022-03-20 07:26:13,823 INFO L913 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 [2022-03-20 07:26:13,823 INFO L914 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] [2022-03-20 07:26:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-20 07:26:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 338. [2022-03-20 07:26:13,828 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) [2022-03-20 07:26:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 442 transitions. [2022-03-20 07:26:13,828 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 442 transitions. Word has length 62 [2022-03-20 07:26:13,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:13,828 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 442 transitions. [2022-03-20 07:26:13,829 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) [2022-03-20 07:26:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 442 transitions. [2022-03-20 07:26:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 07:26:13,829 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:13,829 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:13,829 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-20 07:26:13,829 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:13,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1006609107, now seen corresponding path program 1 times [2022-03-20 07:26:13,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:13,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842656352] [2022-03-20 07:26:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:13,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:13,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:14,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:14,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:14,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842656352] [2022-03-20 07:26:14,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842656352] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:14,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:14,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 07:26:14,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901706541] [2022-03-20 07:26:14,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:14,023 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 07:26:14,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 07:26:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:14,024 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) [2022-03-20 07:26:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:14,708 INFO L93 Difference]: Finished difference Result 343 states and 451 transitions. [2022-03-20 07:26:14,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 07:26:14,708 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 [2022-03-20 07:26:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:14,709 INFO L225 Difference]: With dead ends: 343 [2022-03-20 07:26:14,709 INFO L226 Difference]: Without dead ends: 304 [2022-03-20 07:26:14,710 INFO L912 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 [2022-03-20 07:26:14,710 INFO L913 BasicCegarLoop]: 227 mSDtfsCounter, 155 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:14,710 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1485 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 07:26:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-03-20 07:26:14,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2022-03-20 07:26:14,714 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) [2022-03-20 07:26:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 398 transitions. [2022-03-20 07:26:14,715 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 398 transitions. Word has length 58 [2022-03-20 07:26:14,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:14,715 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 398 transitions. [2022-03-20 07:26:14,715 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) [2022-03-20 07:26:14,715 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 398 transitions. [2022-03-20 07:26:14,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-20 07:26:14,716 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:14,716 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:14,716 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-20 07:26:14,716 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:14,717 INFO L85 PathProgramCache]: Analyzing trace with hash -763479135, now seen corresponding path program 1 times [2022-03-20 07:26:14,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:14,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770588738] [2022-03-20 07:26:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:14,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:14,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:14,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 07:26:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:14,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:14,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:14,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:14,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:14,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770588738] [2022-03-20 07:26:14,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770588738] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:14,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:14,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392657244] [2022-03-20 07:26:14,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:14,890 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:14,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:14,890 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) [2022-03-20 07:26:15,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:15,535 INFO L93 Difference]: Finished difference Result 316 states and 429 transitions. [2022-03-20 07:26:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 07:26:15,536 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 [2022-03-20 07:26:15,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:15,537 INFO L225 Difference]: With dead ends: 316 [2022-03-20 07:26:15,537 INFO L226 Difference]: Without dead ends: 316 [2022-03-20 07:26:15,537 INFO L912 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 [2022-03-20 07:26:15,537 INFO L913 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 [2022-03-20 07:26:15,538 INFO L914 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] [2022-03-20 07:26:15,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-20 07:26:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2022-03-20 07:26:15,542 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) [2022-03-20 07:26:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 396 transitions. [2022-03-20 07:26:15,542 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 396 transitions. Word has length 66 [2022-03-20 07:26:15,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:15,543 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 396 transitions. [2022-03-20 07:26:15,543 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) [2022-03-20 07:26:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 396 transitions. [2022-03-20 07:26:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 07:26:15,543 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:15,543 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:15,543 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-20 07:26:15,543 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:15,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1216763617, now seen corresponding path program 1 times [2022-03-20 07:26:15,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:15,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141220941] [2022-03-20 07:26:15,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:15,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 07:26:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:15,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:15,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141220941] [2022-03-20 07:26:15,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141220941] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:15,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:15,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:15,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611538159] [2022-03-20 07:26:15,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:15,697 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:15,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:15,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:15,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:15,698 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) [2022-03-20 07:26:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:16,039 INFO L93 Difference]: Finished difference Result 330 states and 453 transitions. [2022-03-20 07:26:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:26:16,040 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 [2022-03-20 07:26:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:16,041 INFO L225 Difference]: With dead ends: 330 [2022-03-20 07:26:16,041 INFO L226 Difference]: Without dead ends: 330 [2022-03-20 07:26:16,041 INFO L912 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 [2022-03-20 07:26:16,042 INFO L913 BasicCegarLoop]: 225 mSDtfsCounter, 133 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-03-20 07:26:16,042 INFO L914 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] [2022-03-20 07:26:16,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-20 07:26:16,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 303. [2022-03-20 07:26:16,047 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) [2022-03-20 07:26:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 409 transitions. [2022-03-20 07:26:16,047 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 409 transitions. Word has length 68 [2022-03-20 07:26:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:16,047 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 409 transitions. [2022-03-20 07:26:16,048 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) [2022-03-20 07:26:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 409 transitions. [2022-03-20 07:26:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-20 07:26:16,048 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:16,048 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:16,048 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-20 07:26:16,048 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:16,049 INFO L85 PathProgramCache]: Analyzing trace with hash 107043316, now seen corresponding path program 1 times [2022-03-20 07:26:16,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:16,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913762578] [2022-03-20 07:26:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:16,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 07:26:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:16,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:16,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913762578] [2022-03-20 07:26:16,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913762578] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:16,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:16,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 07:26:16,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301643709] [2022-03-20 07:26:16,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:16,170 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 07:26:16,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:16,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 07:26:16,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-20 07:26:16,170 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) [2022-03-20 07:26:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:16,507 INFO L93 Difference]: Finished difference Result 474 states and 674 transitions. [2022-03-20 07:26:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:26:16,507 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 [2022-03-20 07:26:16,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:16,509 INFO L225 Difference]: With dead ends: 474 [2022-03-20 07:26:16,509 INFO L226 Difference]: Without dead ends: 474 [2022-03-20 07:26:16,509 INFO L912 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 [2022-03-20 07:26:16,510 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:16,510 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 793 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 07:26:16,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-03-20 07:26:16,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 307. [2022-03-20 07:26:16,515 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) [2022-03-20 07:26:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 415 transitions. [2022-03-20 07:26:16,516 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 415 transitions. Word has length 69 [2022-03-20 07:26:16,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:16,516 INFO L478 AbstractCegarLoop]: Abstraction has 307 states and 415 transitions. [2022-03-20 07:26:16,516 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) [2022-03-20 07:26:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 415 transitions. [2022-03-20 07:26:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-20 07:26:16,516 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:16,516 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:16,517 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-20 07:26:16,517 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1007458050, now seen corresponding path program 1 times [2022-03-20 07:26:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:16,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522333710] [2022-03-20 07:26:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:16,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 07:26:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:16,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:16,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522333710] [2022-03-20 07:26:16,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522333710] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:16,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:16,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 07:26:16,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180741493] [2022-03-20 07:26:16,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:16,676 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 07:26:16,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:16,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 07:26:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-20 07:26:16,677 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) [2022-03-20 07:26:17,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:17,553 INFO L93 Difference]: Finished difference Result 529 states and 764 transitions. [2022-03-20 07:26:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:26:17,554 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 [2022-03-20 07:26:17,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:17,556 INFO L225 Difference]: With dead ends: 529 [2022-03-20 07:26:17,556 INFO L226 Difference]: Without dead ends: 529 [2022-03-20 07:26:17,556 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:26:17,556 INFO L913 BasicCegarLoop]: 253 mSDtfsCounter, 328 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:17,556 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 761 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:26:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-03-20 07:26:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 490. [2022-03-20 07:26:17,564 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) [2022-03-20 07:26:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2022-03-20 07:26:17,565 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 70 [2022-03-20 07:26:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:17,565 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2022-03-20 07:26:17,565 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) [2022-03-20 07:26:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2022-03-20 07:26:17,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-20 07:26:17,566 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:17,566 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:17,566 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-20 07:26:17,566 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:17,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2035760571, now seen corresponding path program 1 times [2022-03-20 07:26:17,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:17,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638603791] [2022-03-20 07:26:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:17,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:17,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 07:26:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:17,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:17,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:17,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638603791] [2022-03-20 07:26:17,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638603791] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:17,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:17,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 07:26:17,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855715738] [2022-03-20 07:26:17,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:17,799 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 07:26:17,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:17,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 07:26:17,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-20 07:26:17,800 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) [2022-03-20 07:26:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:18,141 INFO L93 Difference]: Finished difference Result 493 states and 705 transitions. [2022-03-20 07:26:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 07:26:18,142 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 [2022-03-20 07:26:18,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:18,146 INFO L225 Difference]: With dead ends: 493 [2022-03-20 07:26:18,146 INFO L226 Difference]: Without dead ends: 493 [2022-03-20 07:26:18,146 INFO L912 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 [2022-03-20 07:26:18,146 INFO L913 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 [2022-03-20 07:26:18,146 INFO L914 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] [2022-03-20 07:26:18,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-20 07:26:18,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 484. [2022-03-20 07:26:18,153 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) [2022-03-20 07:26:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 687 transitions. [2022-03-20 07:26:18,154 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 687 transitions. Word has length 72 [2022-03-20 07:26:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:18,155 INFO L478 AbstractCegarLoop]: Abstraction has 484 states and 687 transitions. [2022-03-20 07:26:18,155 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) [2022-03-20 07:26:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 687 transitions. [2022-03-20 07:26:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-20 07:26:18,155 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:18,156 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:18,156 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-20 07:26:18,156 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:18,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1777696599, now seen corresponding path program 1 times [2022-03-20 07:26:18,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:18,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735332712] [2022-03-20 07:26:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:18,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 07:26:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 07:26:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:18,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:18,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735332712] [2022-03-20 07:26:18,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735332712] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:18,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:18,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 07:26:18,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254633967] [2022-03-20 07:26:18,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:18,333 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 07:26:18,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:18,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 07:26:18,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-20 07:26:18,334 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) [2022-03-20 07:26:19,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:19,048 INFO L93 Difference]: Finished difference Result 450 states and 629 transitions. [2022-03-20 07:26:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:26:19,049 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 [2022-03-20 07:26:19,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:19,050 INFO L225 Difference]: With dead ends: 450 [2022-03-20 07:26:19,050 INFO L226 Difference]: Without dead ends: 450 [2022-03-20 07:26:19,050 INFO L912 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 [2022-03-20 07:26:19,051 INFO L913 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 [2022-03-20 07:26:19,051 INFO L914 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] [2022-03-20 07:26:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-20 07:26:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2022-03-20 07:26:19,057 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) [2022-03-20 07:26:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 604 transitions. [2022-03-20 07:26:19,058 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 604 transitions. Word has length 83 [2022-03-20 07:26:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:19,059 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 604 transitions. [2022-03-20 07:26:19,059 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) [2022-03-20 07:26:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 604 transitions. [2022-03-20 07:26:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-20 07:26:19,059 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:19,060 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:19,060 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-20 07:26:19,060 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:19,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1836701912, now seen corresponding path program 1 times [2022-03-20 07:26:19,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:19,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172544756] [2022-03-20 07:26:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:19,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-20 07:26:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:19,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:19,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172544756] [2022-03-20 07:26:19,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172544756] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:19,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:19,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-20 07:26:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403475186] [2022-03-20 07:26:19,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:19,436 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 07:26:19,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 07:26:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-20 07:26:19,436 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) [2022-03-20 07:26:20,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:20,079 INFO L93 Difference]: Finished difference Result 483 states and 678 transitions. [2022-03-20 07:26:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 07:26:20,080 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 [2022-03-20 07:26:20,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:20,081 INFO L225 Difference]: With dead ends: 483 [2022-03-20 07:26:20,081 INFO L226 Difference]: Without dead ends: 461 [2022-03-20 07:26:20,082 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-20 07:26:20,082 INFO L913 BasicCegarLoop]: 241 mSDtfsCounter, 211 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:20,082 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 2734 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 07:26:20,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-03-20 07:26:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 447. [2022-03-20 07:26:20,089 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) [2022-03-20 07:26:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2022-03-20 07:26:20,090 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 92 [2022-03-20 07:26:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:20,090 INFO L478 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2022-03-20 07:26:20,090 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) [2022-03-20 07:26:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2022-03-20 07:26:20,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-20 07:26:20,111 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:20,111 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:20,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-20 07:26:20,112 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:20,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1857542518, now seen corresponding path program 1 times [2022-03-20 07:26:20,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:20,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966851691] [2022-03-20 07:26:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:20,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 07:26:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:20,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:20,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966851691] [2022-03-20 07:26:20,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966851691] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:20,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:20,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-20 07:26:20,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975347287] [2022-03-20 07:26:20,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:20,493 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 07:26:20,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 07:26:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-20 07:26:20,493 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) [2022-03-20 07:26:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:21,315 INFO L93 Difference]: Finished difference Result 481 states and 674 transitions. [2022-03-20 07:26:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 07:26:21,334 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 [2022-03-20 07:26:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:21,336 INFO L225 Difference]: With dead ends: 481 [2022-03-20 07:26:21,336 INFO L226 Difference]: Without dead ends: 459 [2022-03-20 07:26:21,336 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-20 07:26:21,337 INFO L913 BasicCegarLoop]: 249 mSDtfsCounter, 131 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-03-20 07:26:21,337 INFO L914 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] [2022-03-20 07:26:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-03-20 07:26:21,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-03-20 07:26:21,342 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) [2022-03-20 07:26:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 600 transitions. [2022-03-20 07:26:21,344 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 600 transitions. Word has length 93 [2022-03-20 07:26:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:21,345 INFO L478 AbstractCegarLoop]: Abstraction has 434 states and 600 transitions. [2022-03-20 07:26:21,345 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) [2022-03-20 07:26:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 600 transitions. [2022-03-20 07:26:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-20 07:26:21,345 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:21,345 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:21,346 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-20 07:26:21,346 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:21,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:21,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1054192149, now seen corresponding path program 1 times [2022-03-20 07:26:21,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:21,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194129816] [2022-03-20 07:26:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:21,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 07:26:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 07:26:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:21,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:21,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194129816] [2022-03-20 07:26:21,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194129816] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:21,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:21,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-20 07:26:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231700900] [2022-03-20 07:26:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:21,719 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 07:26:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 07:26:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-03-20 07:26:21,721 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) [2022-03-20 07:26:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:22,786 INFO L93 Difference]: Finished difference Result 467 states and 639 transitions. [2022-03-20 07:26:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 07:26:22,787 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 [2022-03-20 07:26:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:22,788 INFO L225 Difference]: With dead ends: 467 [2022-03-20 07:26:22,788 INFO L226 Difference]: Without dead ends: 434 [2022-03-20 07:26:22,790 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2022-03-20 07:26:22,790 INFO L913 BasicCegarLoop]: 210 mSDtfsCounter, 405 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:22,790 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 825 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 07:26:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-03-20 07:26:22,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 424. [2022-03-20 07:26:22,809 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) [2022-03-20 07:26:22,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 587 transitions. [2022-03-20 07:26:22,810 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 587 transitions. Word has length 103 [2022-03-20 07:26:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:22,810 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 587 transitions. [2022-03-20 07:26:22,811 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) [2022-03-20 07:26:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 587 transitions. [2022-03-20 07:26:22,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-20 07:26:22,811 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:22,811 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:22,812 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-20 07:26:22,812 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1385513232, now seen corresponding path program 1 times [2022-03-20 07:26:22,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:22,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106829523] [2022-03-20 07:26:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:23,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:23,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:23,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:23,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:23,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-20 07:26:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:23,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-20 07:26:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 07:26:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:23,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:23,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:23,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106829523] [2022-03-20 07:26:23,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106829523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:23,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:23,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-20 07:26:23,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034555514] [2022-03-20 07:26:23,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:23,180 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-20 07:26:23,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-20 07:26:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-20 07:26:23,181 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) [2022-03-20 07:26:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:23,998 INFO L93 Difference]: Finished difference Result 478 states and 676 transitions. [2022-03-20 07:26:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-20 07:26:23,998 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 [2022-03-20 07:26:23,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:24,000 INFO L225 Difference]: With dead ends: 478 [2022-03-20 07:26:24,000 INFO L226 Difference]: Without dead ends: 454 [2022-03-20 07:26:24,001 INFO L912 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 [2022-03-20 07:26:24,001 INFO L913 BasicCegarLoop]: 200 mSDtfsCounter, 137 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:24,001 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 2252 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 07:26:24,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-03-20 07:26:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 440. [2022-03-20 07:26:24,007 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) [2022-03-20 07:26:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 610 transitions. [2022-03-20 07:26:24,008 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 610 transitions. Word has length 108 [2022-03-20 07:26:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:24,008 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 610 transitions. [2022-03-20 07:26:24,008 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) [2022-03-20 07:26:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 610 transitions. [2022-03-20 07:26:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-20 07:26:24,009 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:24,009 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:24,009 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-20 07:26:24,009 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:24,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:24,009 INFO L85 PathProgramCache]: Analyzing trace with hash -205451642, now seen corresponding path program 1 times [2022-03-20 07:26:24,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:24,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959371915] [2022-03-20 07:26:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:24,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 07:26:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 07:26:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 07:26:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:24,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:24,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959371915] [2022-03-20 07:26:24,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959371915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:24,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:24,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-20 07:26:24,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224652410] [2022-03-20 07:26:24,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:24,404 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-20 07:26:24,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-20 07:26:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-20 07:26:24,405 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) [2022-03-20 07:26:25,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:25,489 INFO L93 Difference]: Finished difference Result 480 states and 674 transitions. [2022-03-20 07:26:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-20 07:26:25,489 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 [2022-03-20 07:26:25,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:25,491 INFO L225 Difference]: With dead ends: 480 [2022-03-20 07:26:25,491 INFO L226 Difference]: Without dead ends: 443 [2022-03-20 07:26:25,492 INFO L912 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 [2022-03-20 07:26:25,492 INFO L913 BasicCegarLoop]: 238 mSDtfsCounter, 120 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:25,492 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 2628 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 07:26:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-03-20 07:26:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 413. [2022-03-20 07:26:25,500 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) [2022-03-20 07:26:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 557 transitions. [2022-03-20 07:26:25,501 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 557 transitions. Word has length 109 [2022-03-20 07:26:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:25,501 INFO L478 AbstractCegarLoop]: Abstraction has 413 states and 557 transitions. [2022-03-20 07:26:25,501 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) [2022-03-20 07:26:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 557 transitions. [2022-03-20 07:26:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-20 07:26:25,502 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:25,502 INFO L499 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] [2022-03-20 07:26:25,502 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-20 07:26:25,502 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:25,502 INFO L85 PathProgramCache]: Analyzing trace with hash -790809002, now seen corresponding path program 1 times [2022-03-20 07:26:25,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:25,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125783491] [2022-03-20 07:26:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:25,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 07:26:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 07:26:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 07:26:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 07:26:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-20 07:26:25,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:25,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125783491] [2022-03-20 07:26:25,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125783491] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:25,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:25,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 07:26:25,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959664227] [2022-03-20 07:26:25,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:25,696 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 07:26:25,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:25,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 07:26:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:25,696 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) [2022-03-20 07:26:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:26,299 INFO L93 Difference]: Finished difference Result 420 states and 559 transitions. [2022-03-20 07:26:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:26:26,299 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 [2022-03-20 07:26:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:26,301 INFO L225 Difference]: With dead ends: 420 [2022-03-20 07:26:26,301 INFO L226 Difference]: Without dead ends: 420 [2022-03-20 07:26:26,301 INFO L912 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 [2022-03-20 07:26:26,302 INFO L913 BasicCegarLoop]: 217 mSDtfsCounter, 156 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:26,302 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 1253 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 07:26:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-20 07:26:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 408. [2022-03-20 07:26:26,306 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) [2022-03-20 07:26:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 540 transitions. [2022-03-20 07:26:26,307 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 540 transitions. Word has length 121 [2022-03-20 07:26:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:26,307 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 540 transitions. [2022-03-20 07:26:26,307 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) [2022-03-20 07:26:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 540 transitions. [2022-03-20 07:26:26,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-20 07:26:26,308 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:26,308 INFO L499 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] [2022-03-20 07:26:26,308 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-20 07:26:26,308 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -474317813, now seen corresponding path program 1 times [2022-03-20 07:26:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:26,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086521453] [2022-03-20 07:26:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:26,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 07:26:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 07:26:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 07:26:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 07:26:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-20 07:26:26,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:26,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086521453] [2022-03-20 07:26:26,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086521453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:26,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:26,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 07:26:26,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460230066] [2022-03-20 07:26:26,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:26,537 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 07:26:26,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:26,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 07:26:26,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:26,537 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) [2022-03-20 07:26:27,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:27,092 INFO L93 Difference]: Finished difference Result 547 states and 788 transitions. [2022-03-20 07:26:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:26:27,093 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 [2022-03-20 07:26:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:27,095 INFO L225 Difference]: With dead ends: 547 [2022-03-20 07:26:27,095 INFO L226 Difference]: Without dead ends: 547 [2022-03-20 07:26:27,096 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-20 07:26:27,096 INFO L913 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:27,096 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 1507 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 07:26:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-03-20 07:26:27,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 399. [2022-03-20 07:26:27,105 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) [2022-03-20 07:26:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 529 transitions. [2022-03-20 07:26:27,106 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 529 transitions. Word has length 122 [2022-03-20 07:26:27,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:27,106 INFO L478 AbstractCegarLoop]: Abstraction has 399 states and 529 transitions. [2022-03-20 07:26:27,106 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) [2022-03-20 07:26:27,106 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 529 transitions. [2022-03-20 07:26:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-20 07:26:27,109 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:27,109 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:27,109 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-20 07:26:27,109 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash -286096315, now seen corresponding path program 1 times [2022-03-20 07:26:27,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:27,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161747076] [2022-03-20 07:26:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 07:26:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 07:26:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 07:26:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 07:26:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 07:26:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 07:26:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 07:26:27,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:27,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161747076] [2022-03-20 07:26:27,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161747076] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:27,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:27,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-20 07:26:27,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779023615] [2022-03-20 07:26:27,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:27,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-20 07:26:27,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:27,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-20 07:26:27,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-03-20 07:26:27,544 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) [2022-03-20 07:26:28,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:28,780 INFO L93 Difference]: Finished difference Result 413 states and 548 transitions. [2022-03-20 07:26:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-20 07:26:28,796 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 [2022-03-20 07:26:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:28,797 INFO L225 Difference]: With dead ends: 413 [2022-03-20 07:26:28,798 INFO L226 Difference]: Without dead ends: 354 [2022-03-20 07:26:28,798 INFO L912 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 [2022-03-20 07:26:28,798 INFO L913 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 [2022-03-20 07:26:28,799 INFO L914 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] [2022-03-20 07:26:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-20 07:26:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 341. [2022-03-20 07:26:28,803 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) [2022-03-20 07:26:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 436 transitions. [2022-03-20 07:26:28,804 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 436 transitions. Word has length 119 [2022-03-20 07:26:28,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:28,804 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 436 transitions. [2022-03-20 07:26:28,804 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) [2022-03-20 07:26:28,804 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 436 transitions. [2022-03-20 07:26:28,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-20 07:26:28,805 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:28,805 INFO L499 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] [2022-03-20 07:26:28,805 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-20 07:26:28,805 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash 762913287, now seen corresponding path program 1 times [2022-03-20 07:26:28,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:28,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820528116] [2022-03-20 07:26:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 07:26:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 07:26:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 07:26:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:28,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 07:26:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 07:26:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 07:26:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-20 07:26:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820528116] [2022-03-20 07:26:29,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820528116] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 07:26:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587565539] [2022-03-20 07:26:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:29,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 07:26:29,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:26:29,044 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) [2022-03-20 07:26:29,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 07:26:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 07:26:29,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 07:26:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-03-20 07:26:29,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 07:26:29,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587565539] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:29,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 07:26:29,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-03-20 07:26:29,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425836289] [2022-03-20 07:26:29,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:29,488 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 07:26:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 07:26:29,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-20 07:26:29,499 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) [2022-03-20 07:26:29,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:29,503 INFO L93 Difference]: Finished difference Result 341 states and 434 transitions. [2022-03-20 07:26:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 07:26:29,503 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 [2022-03-20 07:26:29,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:29,505 INFO L225 Difference]: With dead ends: 341 [2022-03-20 07:26:29,505 INFO L226 Difference]: Without dead ends: 341 [2022-03-20 07:26:29,505 INFO L912 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 [2022-03-20 07:26:29,505 INFO L913 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 [2022-03-20 07:26:29,505 INFO L914 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] [2022-03-20 07:26:29,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-03-20 07:26:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-03-20 07:26:29,510 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) [2022-03-20 07:26:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 434 transitions. [2022-03-20 07:26:29,511 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 434 transitions. Word has length 163 [2022-03-20 07:26:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:29,511 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 434 transitions. [2022-03-20 07:26:29,511 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) [2022-03-20 07:26:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 434 transitions. [2022-03-20 07:26:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-20 07:26:29,512 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:29,512 INFO L499 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] [2022-03-20 07:26:29,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 07:26:29,731 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 [2022-03-20 07:26:29,732 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:29,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1424868086, now seen corresponding path program 1 times [2022-03-20 07:26:29,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:29,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757713701] [2022-03-20 07:26:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:29,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 07:26:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 07:26:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 07:26:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 07:26:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 07:26:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 07:26:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-20 07:26:29,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:29,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757713701] [2022-03-20 07:26:29,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757713701] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 07:26:29,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965883523] [2022-03-20 07:26:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:29,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 07:26:29,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 07:26:29,955 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) [2022-03-20 07:26:29,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 07:26:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 07:26:30,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 07:26:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-20 07:26:30,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 07:26:30,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965883523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:30,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 07:26:30,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 15 [2022-03-20 07:26:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444860555] [2022-03-20 07:26:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:30,338 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 07:26:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 07:26:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:30,338 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) [2022-03-20 07:26:30,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:30,368 INFO L93 Difference]: Finished difference Result 374 states and 481 transitions. [2022-03-20 07:26:30,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 07:26:30,368 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 [2022-03-20 07:26:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:30,369 INFO L225 Difference]: With dead ends: 374 [2022-03-20 07:26:30,369 INFO L226 Difference]: Without dead ends: 372 [2022-03-20 07:26:30,370 INFO L912 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 [2022-03-20 07:26:30,370 INFO L913 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 [2022-03-20 07:26:30,371 INFO L914 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] [2022-03-20 07:26:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-03-20 07:26:30,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 361. [2022-03-20 07:26:30,385 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) [2022-03-20 07:26:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 463 transitions. [2022-03-20 07:26:30,386 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 463 transitions. Word has length 163 [2022-03-20 07:26:30,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:30,387 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 463 transitions. [2022-03-20 07:26:30,387 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) [2022-03-20 07:26:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 463 transitions. [2022-03-20 07:26:30,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-20 07:26:30,388 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:30,388 INFO L499 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] [2022-03-20 07:26:30,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 07:26:30,608 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 [2022-03-20 07:26:30,608 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:30,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash -589316084, now seen corresponding path program 1 times [2022-03-20 07:26:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:30,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625109531] [2022-03-20 07:26:30,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:30,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 07:26:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 07:26:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 07:26:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 07:26:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 07:26:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-20 07:26:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-20 07:26:30,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:30,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625109531] [2022-03-20 07:26:30,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625109531] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:30,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:30,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 07:26:30,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290949859] [2022-03-20 07:26:30,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:30,838 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 07:26:30,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:30,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 07:26:30,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:30,838 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) [2022-03-20 07:26:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:31,235 INFO L93 Difference]: Finished difference Result 428 states and 566 transitions. [2022-03-20 07:26:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:26:31,235 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 [2022-03-20 07:26:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:31,236 INFO L225 Difference]: With dead ends: 428 [2022-03-20 07:26:31,237 INFO L226 Difference]: Without dead ends: 428 [2022-03-20 07:26:31,237 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-20 07:26:31,237 INFO L913 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 [2022-03-20 07:26:31,239 INFO L914 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] [2022-03-20 07:26:31,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-20 07:26:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 345. [2022-03-20 07:26:31,245 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) [2022-03-20 07:26:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 433 transitions. [2022-03-20 07:26:31,245 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 433 transitions. Word has length 164 [2022-03-20 07:26:31,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:31,246 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 433 transitions. [2022-03-20 07:26:31,246 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) [2022-03-20 07:26:31,246 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 433 transitions. [2022-03-20 07:26:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-03-20 07:26:31,248 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:31,248 INFO L499 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] [2022-03-20 07:26:31,248 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-20 07:26:31,248 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash -158276280, now seen corresponding path program 1 times [2022-03-20 07:26:31,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:31,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367614108] [2022-03-20 07:26:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 07:26:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 07:26:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 07:26:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 07:26:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 07:26:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-20 07:26:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-20 07:26:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-20 07:26:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-03-20 07:26:31,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:31,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367614108] [2022-03-20 07:26:31,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367614108] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:31,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:31,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 07:26:31,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358482331] [2022-03-20 07:26:31,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:31,472 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 07:26:31,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 07:26:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:31,472 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) [2022-03-20 07:26:31,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:31,735 INFO L93 Difference]: Finished difference Result 354 states and 451 transitions. [2022-03-20 07:26:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:26:31,736 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 [2022-03-20 07:26:31,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:31,737 INFO L225 Difference]: With dead ends: 354 [2022-03-20 07:26:31,737 INFO L226 Difference]: Without dead ends: 354 [2022-03-20 07:26:31,737 INFO L912 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 [2022-03-20 07:26:31,738 INFO L913 BasicCegarLoop]: 191 mSDtfsCounter, 148 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:31,738 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 915 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 07:26:31,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-20 07:26:31,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 309. [2022-03-20 07:26:31,742 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) [2022-03-20 07:26:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 385 transitions. [2022-03-20 07:26:31,742 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 385 transitions. Word has length 204 [2022-03-20 07:26:31,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:31,743 INFO L478 AbstractCegarLoop]: Abstraction has 309 states and 385 transitions. [2022-03-20 07:26:31,743 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) [2022-03-20 07:26:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 385 transitions. [2022-03-20 07:26:31,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-03-20 07:26:31,744 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 07:26:31,744 INFO L499 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] [2022-03-20 07:26:31,744 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-20 07:26:31,744 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 07:26:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 07:26:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1341132510, now seen corresponding path program 1 times [2022-03-20 07:26:31,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 07:26:31,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4741860] [2022-03-20 07:26:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 07:26:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 07:26:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 07:26:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 07:26:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 07:26:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 07:26:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 07:26:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 07:26:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 07:26:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 07:26:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 07:26:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-20 07:26:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-20 07:26:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-20 07:26:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 07:26:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 07:26:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 07:26:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 07:26:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-03-20 07:26:31,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 07:26:31,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4741860] [2022-03-20 07:26:31,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4741860] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 07:26:31,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 07:26:31,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 07:26:31,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965471609] [2022-03-20 07:26:31,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 07:26:31,948 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 07:26:31,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 07:26:31,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 07:26:31,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 07:26:31,949 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) [2022-03-20 07:26:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 07:26:32,261 INFO L93 Difference]: Finished difference Result 290 states and 362 transitions. [2022-03-20 07:26:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 07:26:32,261 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 [2022-03-20 07:26:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 07:26:32,261 INFO L225 Difference]: With dead ends: 290 [2022-03-20 07:26:32,261 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 07:26:32,262 INFO L912 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 [2022-03-20 07:26:32,262 INFO L913 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 07:26:32,262 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 663 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 07:26:32,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 07:26:32,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 07:26:32,262 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) [2022-03-20 07:26:32,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 07:26:32,262 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2022-03-20 07:26:32,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 07:26:32,263 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 07:26:32,263 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) [2022-03-20 07:26:32,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 07:26:32,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 07:26:32,265 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 07:26:32,265 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-20 07:26:32,268 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 07:26:32,269 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 07:26:32,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 07:26:32 BasicIcfg [2022-03-20 07:26:32,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 07:26:32,271 INFO L158 Benchmark]: Toolchain (without parser) took 45543.00ms. Allocated memory was 181.4MB in the beginning and 377.5MB in the end (delta: 196.1MB). Free memory was 132.6MB in the beginning and 155.9MB in the end (delta: -23.3MB). Peak memory consumption was 175.4MB. Max. memory is 8.0GB. [2022-03-20 07:26:32,271 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 149.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 07:26:32,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.85ms. Allocated memory is still 181.4MB. Free memory was 132.2MB in the beginning and 150.6MB in the end (delta: -18.3MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. [2022-03-20 07:26:32,271 INFO L158 Benchmark]: Boogie Preprocessor took 55.78ms. Allocated memory is still 181.4MB. Free memory was 150.6MB in the beginning and 146.9MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-20 07:26:32,271 INFO L158 Benchmark]: RCFGBuilder took 767.90ms. Allocated memory is still 181.4MB. Free memory was 146.9MB in the beginning and 106.5MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-03-20 07:26:32,271 INFO L158 Benchmark]: IcfgTransformer took 29.05ms. Allocated memory is still 181.4MB. Free memory was 106.5MB in the beginning and 101.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-20 07:26:32,272 INFO L158 Benchmark]: TraceAbstraction took 44241.48ms. Allocated memory was 181.4MB in the beginning and 377.5MB in the end (delta: 196.1MB). Free memory was 101.3MB in the beginning and 155.9MB in the end (delta: -54.6MB). Peak memory consumption was 142.5MB. Max. memory is 8.0GB. [2022-03-20 07:26:32,279 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 181.4MB. Free memory is still 149.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 444.85ms. Allocated memory is still 181.4MB. Free memory was 132.2MB in the beginning and 150.6MB in the end (delta: -18.3MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.78ms. Allocated memory is still 181.4MB. Free memory was 150.6MB in the beginning and 146.9MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 767.90ms. Allocated memory is still 181.4MB. Free memory was 146.9MB in the beginning and 106.5MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * IcfgTransformer took 29.05ms. Allocated memory is still 181.4MB. Free memory was 106.5MB in the beginning and 101.8MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 44241.48ms. Allocated memory was 181.4MB in the beginning and 377.5MB in the end (delta: 196.1MB). Free memory was 101.3MB in the beginning and 155.9MB in the end (delta: -54.6MB). Peak memory consumption was 142.5MB. 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: 44.2s, OverallIterations: 47, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 32.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14845 SdHoareTripleChecker+Valid, 27.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14665 mSDsluCounter, 50924 SdHoareTripleChecker+Invalid, 23.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37868 mSDsCounter, 6499 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48259 IncrementalHoareTripleChecker+Invalid, 54758 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6499 mSolverCounterUnsat, 13056 mSDtfsCounter, 48259 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, 8.5s 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: 0.6s AutomataMinimizationTime, 47 MinimizatonAttempts, 2092 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.7s 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! [2022-03-20 07:26:32,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...