/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 00:45:10,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 00:45:10,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 00:45:10,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-07 00:45:10,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 00:45:10,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 00:45:10,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 00:45:10,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 00:45:10,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 00:45:10,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 00:45:10,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 00:45:10,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 00:45:10,580 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 00:45:10,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 00:45:10,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 00:45:10,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 00:45:10,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 00:45:10,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 00:45:10,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 00:45:10,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 00:45:10,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 00:45:10,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-07 00:45:10,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 00:45:10,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 00:45:10,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 00:45:10,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 00:45:10,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 00:45:10,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 00:45:10,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 00:45:10,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 00:45:10,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 00:45:10,607 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 00:45:10,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 00:45:10,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 00:45:10,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 00:45:10,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-07 00:45:10,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 00:45:10,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:45:10,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 00:45:10,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-07 00:45:10,608 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-07 00:45:10,608 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-07 00:45:10,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-07 00:45:10,608 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-07 00:45:10,608 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 00:45:10,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 00:45:10,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 00:45:10,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 00:45:10,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 00:45:10,812 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 00:45:10,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2022-04-07 00:45:10,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99cce3110/b5d173eeb6bd454a90ef34cf76bcb3bb/FLAGef60e666c [2022-04-07 00:45:11,358 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 00:45:11,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl4.cil-1.c [2022-04-07 00:45:11,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99cce3110/b5d173eeb6bd454a90ef34cf76bcb3bb/FLAGef60e666c [2022-04-07 00:45:11,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99cce3110/b5d173eeb6bd454a90ef34cf76bcb3bb [2022-04-07 00:45:11,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 00:45:11,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-07 00:45:11,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 00:45:11,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 00:45:11,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 00:45:11,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:45:11" (1/1) ... [2022-04-07 00:45:11,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21552748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:11, skipping insertion in model container [2022-04-07 00:45:11,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 12:45:11" (1/1) ... [2022-04-07 00:45:11,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 00:45:11,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 00:45:12,003 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/floppy_simpl4.cil-1.c[48581,48594] [2022-04-07 00:45:12,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:45:12,014 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 00:45:12,133 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/floppy_simpl4.cil-1.c[48581,48594] [2022-04-07 00:45:12,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 00:45:12,144 INFO L208 MainTranslator]: Completed translation [2022-04-07 00:45:12,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:12 WrapperNode [2022-04-07 00:45:12,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 00:45:12,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 00:45:12,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 00:45:12,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 00:45:12,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:12" (1/1) ... [2022-04-07 00:45:12,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:12" (1/1) ... [2022-04-07 00:45:12,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:12" (1/1) ... [2022-04-07 00:45:12,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:12" (1/1) ... [2022-04-07 00:45:12,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:12" (1/1) ... [2022-04-07 00:45:12,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:12" (1/1) ... [2022-04-07 00:45:12,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:12" (1/1) ... [2022-04-07 00:45:12,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 00:45:12,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 00:45:12,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 00:45:12,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 00:45:12,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:12" (1/1) ... [2022-04-07 00:45:12,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 00:45:12,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 00:45:12,296 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) [2022-04-07 00:45:12,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-07 00:45:12,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 00:45:12,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 00:45:12,359 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 00:45:12,359 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-07 00:45:12,359 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2022-04-07 00:45:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-07 00:45:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-04-07 00:45:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-04-07 00:45:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure FlCheckFormatParameters [2022-04-07 00:45:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-04-07 00:45:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-07 00:45:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 00:45:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 00:45:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 00:45:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 00:45:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-07 00:45:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-07 00:45:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2022-04-07 00:45:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure FlCheckFormatParameters [2022-04-07 00:45:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 00:45:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 00:45:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 00:45:12,506 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 00:45:12,507 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 00:45:12,538 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:12,576 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:45:12,576 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:45:12,586 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:12,592 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:45:12,592 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:45:12,595 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:12,729 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-07 00:45:12,729 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-07 00:45:12,731 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:12,776 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2022-04-07 00:45:12,777 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2022-04-07 00:45:12,784 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:12,798 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-07 00:45:12,798 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-07 00:45:12,870 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:12,878 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:45:12,878 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:45:12,878 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:12,884 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:45:12,884 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:45:12,884 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:12,894 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:45:12,894 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:45:12,917 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:12,935 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-04-07 00:45:12,935 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-04-07 00:45:12,937 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:13,052 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-04-07 00:45:13,052 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-04-07 00:45:13,083 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:13,086 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:45:13,087 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:45:13,087 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:13,098 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:45:13,099 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:45:13,099 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-07 00:45:13,102 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-07 00:45:13,102 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-07 00:45:13,127 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 00:45:13,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 00:45:13,134 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-07 00:45:13,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:45:13 BoogieIcfgContainer [2022-04-07 00:45:13,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 00:45:13,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 00:45:13,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 00:45:13,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 00:45:13,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 12:45:11" (1/3) ... [2022-04-07 00:45:13,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d58f520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:45:13, skipping insertion in model container [2022-04-07 00:45:13,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 12:45:12" (2/3) ... [2022-04-07 00:45:13,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d58f520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 12:45:13, skipping insertion in model container [2022-04-07 00:45:13,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 12:45:13" (3/3) ... [2022-04-07 00:45:13,141 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2022-04-07 00:45:13,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-07 00:45:13,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 00:45:13,178 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 00:45:13,182 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-07 00:45:13,183 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 00:45:13,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 288 states have (on average 1.46875) internal successors, (423), 315 states have internal predecessors, (423), 72 states have call successors, (72), 28 states have call predecessors, (72), 28 states have return successors, (72), 66 states have call predecessors, (72), 72 states have call successors, (72) [2022-04-07 00:45:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-07 00:45:13,205 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:13,205 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:13,205 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:13,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1441300297, now seen corresponding path program 1 times [2022-04-07 00:45:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:13,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [444799929] [2022-04-07 00:45:13,225 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:13,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1441300297, now seen corresponding path program 2 times [2022-04-07 00:45:13,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:13,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020319603] [2022-04-07 00:45:13,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:13,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:13,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:13,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:13,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020319603] [2022-04-07 00:45:13,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020319603] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:13,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:13,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 00:45:13,582 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:13,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [444799929] [2022-04-07 00:45:13,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [444799929] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:13,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:13,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 00:45:13,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109896835] [2022-04-07 00:45:13,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:13,585 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 00:45:13,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 00:45:13,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:45:13,622 INFO L87 Difference]: Start difference. First operand has 390 states, 288 states have (on average 1.46875) internal successors, (423), 315 states have internal predecessors, (423), 72 states have call successors, (72), 28 states have call predecessors, (72), 28 states have return successors, (72), 66 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 00:45:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:14,520 INFO L93 Difference]: Finished difference Result 667 states and 981 transitions. [2022-04-07 00:45:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 00:45:14,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-07 00:45:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:14,531 INFO L225 Difference]: With dead ends: 667 [2022-04-07 00:45:14,531 INFO L226 Difference]: Without dead ends: 424 [2022-04-07 00:45:14,535 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-07 00:45:14,537 INFO L913 BasicCegarLoop]: 496 mSDtfsCounter, 408 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:14,538 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 735 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:45:14,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-04-07 00:45:14,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 382. [2022-04-07 00:45:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 283 states have (on average 1.431095406360424) internal successors, (405), 308 states have internal predecessors, (405), 72 states have call successors, (72), 28 states have call predecessors, (72), 26 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-04-07 00:45:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 526 transitions. [2022-04-07 00:45:14,618 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 526 transitions. Word has length 20 [2022-04-07 00:45:14,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:14,618 INFO L478 AbstractCegarLoop]: Abstraction has 382 states and 526 transitions. [2022-04-07 00:45:14,619 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 00:45:14,619 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 526 transitions. [2022-04-07 00:45:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-07 00:45:14,620 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:14,620 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] [2022-04-07 00:45:14,620 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 00:45:14,620 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:14,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1593270126, now seen corresponding path program 1 times [2022-04-07 00:45:14,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:14,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [692546633] [2022-04-07 00:45:14,621 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:14,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1593270126, now seen corresponding path program 2 times [2022-04-07 00:45:14,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:14,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259203609] [2022-04-07 00:45:14,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:14,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:14,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:14,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:14,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259203609] [2022-04-07 00:45:14,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259203609] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:14,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:14,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:14,746 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:14,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [692546633] [2022-04-07 00:45:14,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [692546633] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:14,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:14,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035052977] [2022-04-07 00:45:14,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:14,748 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:45:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:45:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:45:14,748 INFO L87 Difference]: Start difference. First operand 382 states and 526 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) [2022-04-07 00:45:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:15,521 INFO L93 Difference]: Finished difference Result 753 states and 1031 transitions. [2022-04-07 00:45:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:45:15,521 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 [2022-04-07 00:45:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:15,526 INFO L225 Difference]: With dead ends: 753 [2022-04-07 00:45:15,526 INFO L226 Difference]: Without dead ends: 588 [2022-04-07 00:45:15,527 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:45:15,528 INFO L913 BasicCegarLoop]: 640 mSDtfsCounter, 892 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:15,528 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 902 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:45:15,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-04-07 00:45:15,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 527. [2022-04-07 00:45:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 406 states have (on average 1.354679802955665) internal successors, (550), 412 states have internal predecessors, (550), 79 states have call successors, (79), 41 states have call predecessors, (79), 41 states have return successors, (90), 75 states have call predecessors, (90), 66 states have call successors, (90) [2022-04-07 00:45:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 719 transitions. [2022-04-07 00:45:15,568 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 719 transitions. Word has length 25 [2022-04-07 00:45:15,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:15,569 INFO L478 AbstractCegarLoop]: Abstraction has 527 states and 719 transitions. [2022-04-07 00:45:15,569 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) [2022-04-07 00:45:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 719 transitions. [2022-04-07 00:45:15,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-07 00:45:15,570 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:15,570 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] [2022-04-07 00:45:15,570 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-07 00:45:15,570 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:15,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1172469146, now seen corresponding path program 1 times [2022-04-07 00:45:15,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:15,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [839152659] [2022-04-07 00:45:15,571 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:15,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1172469146, now seen corresponding path program 2 times [2022-04-07 00:45:15,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:15,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129158895] [2022-04-07 00:45:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:15,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:15,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:15,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129158895] [2022-04-07 00:45:15,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129158895] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:15,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:15,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:15,709 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:15,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [839152659] [2022-04-07 00:45:15,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [839152659] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:15,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:15,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:15,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618826839] [2022-04-07 00:45:15,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:15,709 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:45:15,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:45:15,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:45:15,710 INFO L87 Difference]: Start difference. First operand 527 states and 719 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-07 00:45:16,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:16,548 INFO L93 Difference]: Finished difference Result 699 states and 941 transitions. [2022-04-07 00:45:16,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:45:16,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 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 31 [2022-04-07 00:45:16,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:16,552 INFO L225 Difference]: With dead ends: 699 [2022-04-07 00:45:16,552 INFO L226 Difference]: Without dead ends: 678 [2022-04-07 00:45:16,552 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:45:16,553 INFO L913 BasicCegarLoop]: 462 mSDtfsCounter, 881 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:16,553 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 630 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:45:16,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2022-04-07 00:45:16,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 591. [2022-04-07 00:45:16,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 457 states have (on average 1.3522975929978118) internal successors, (618), 471 states have internal predecessors, (618), 83 states have call successors, (83), 46 states have call predecessors, (83), 50 states have return successors, (101), 78 states have call predecessors, (101), 72 states have call successors, (101) [2022-04-07 00:45:16,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 802 transitions. [2022-04-07 00:45:16,592 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 802 transitions. Word has length 31 [2022-04-07 00:45:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:16,593 INFO L478 AbstractCegarLoop]: Abstraction has 591 states and 802 transitions. [2022-04-07 00:45:16,593 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-07 00:45:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 802 transitions. [2022-04-07 00:45:16,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-07 00:45:16,594 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:16,594 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] [2022-04-07 00:45:16,594 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-07 00:45:16,594 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1382361368, now seen corresponding path program 1 times [2022-04-07 00:45:16,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:16,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1010411275] [2022-04-07 00:45:16,595 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1382361368, now seen corresponding path program 2 times [2022-04-07 00:45:16,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:16,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027858914] [2022-04-07 00:45:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:16,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:16,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:16,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:16,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:16,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:16,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027858914] [2022-04-07 00:45:16,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027858914] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:16,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:16,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:16,722 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:16,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1010411275] [2022-04-07 00:45:16,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1010411275] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:16,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:16,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:16,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551411861] [2022-04-07 00:45:16,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:16,723 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:45:16,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:16,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:45:16,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:45:16,724 INFO L87 Difference]: Start difference. First operand 591 states and 802 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-07 00:45:18,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:18,154 INFO L93 Difference]: Finished difference Result 1133 states and 1525 transitions. [2022-04-07 00:45:18,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:45:18,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 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 33 [2022-04-07 00:45:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:18,158 INFO L225 Difference]: With dead ends: 1133 [2022-04-07 00:45:18,158 INFO L226 Difference]: Without dead ends: 827 [2022-04-07 00:45:18,159 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:45:18,160 INFO L913 BasicCegarLoop]: 544 mSDtfsCounter, 663 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:18,160 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 767 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-07 00:45:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-04-07 00:45:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 779. [2022-04-07 00:45:18,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 613 states have (on average 1.3425774877650898) internal successors, (823), 624 states have internal predecessors, (823), 100 states have call successors, (100), 61 states have call predecessors, (100), 65 states have return successors, (136), 97 states have call predecessors, (136), 91 states have call successors, (136) [2022-04-07 00:45:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1059 transitions. [2022-04-07 00:45:18,213 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1059 transitions. Word has length 33 [2022-04-07 00:45:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:18,213 INFO L478 AbstractCegarLoop]: Abstraction has 779 states and 1059 transitions. [2022-04-07 00:45:18,213 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-07 00:45:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1059 transitions. [2022-04-07 00:45:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-07 00:45:18,214 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:18,214 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] [2022-04-07 00:45:18,214 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-07 00:45:18,215 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:18,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash 607683173, now seen corresponding path program 1 times [2022-04-07 00:45:18,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:18,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [334187638] [2022-04-07 00:45:18,215 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash 607683173, now seen corresponding path program 2 times [2022-04-07 00:45:18,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:18,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290329371] [2022-04-07 00:45:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:18,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:18,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-07 00:45:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:18,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:18,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:18,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290329371] [2022-04-07 00:45:18,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290329371] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:18,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:18,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:18,327 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:18,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [334187638] [2022-04-07 00:45:18,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [334187638] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:18,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:18,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:18,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380330440] [2022-04-07 00:45:18,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:18,328 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:45:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:45:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:45:18,328 INFO L87 Difference]: Start difference. First operand 779 states and 1059 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) [2022-04-07 00:45:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:19,321 INFO L93 Difference]: Finished difference Result 881 states and 1187 transitions. [2022-04-07 00:45:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:45:19,321 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 [2022-04-07 00:45:19,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:19,326 INFO L225 Difference]: With dead ends: 881 [2022-04-07 00:45:19,326 INFO L226 Difference]: Without dead ends: 876 [2022-04-07 00:45:19,326 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:19,327 INFO L913 BasicCegarLoop]: 482 mSDtfsCounter, 560 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:19,328 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 843 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:45:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-04-07 00:45:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 822. [2022-04-07 00:45:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 649 states have (on average 1.337442218798151) internal successors, (868), 662 states have internal predecessors, (868), 100 states have call successors, (100), 61 states have call predecessors, (100), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-07 00:45:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1111 transitions. [2022-04-07 00:45:19,392 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1111 transitions. Word has length 39 [2022-04-07 00:45:19,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:19,394 INFO L478 AbstractCegarLoop]: Abstraction has 822 states and 1111 transitions. [2022-04-07 00:45:19,394 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) [2022-04-07 00:45:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1111 transitions. [2022-04-07 00:45:19,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-07 00:45:19,395 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:19,395 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:19,395 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-07 00:45:19,395 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:19,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1331372858, now seen corresponding path program 1 times [2022-04-07 00:45:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:19,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1131950490] [2022-04-07 00:45:19,396 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1331372858, now seen corresponding path program 2 times [2022-04-07 00:45:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:19,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915096816] [2022-04-07 00:45:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:19,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:19,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:19,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:19,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915096816] [2022-04-07 00:45:19,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915096816] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:19,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:19,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:19,527 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:19,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1131950490] [2022-04-07 00:45:19,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1131950490] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:19,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:19,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-07 00:45:19,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216777020] [2022-04-07 00:45:19,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:19,527 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-07 00:45:19,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:19,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-07 00:45:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-07 00:45:19,528 INFO L87 Difference]: Start difference. First operand 822 states and 1111 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-04-07 00:45:21,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:21,083 INFO L93 Difference]: Finished difference Result 856 states and 1153 transitions. [2022-04-07 00:45:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-07 00:45:21,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 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 38 [2022-04-07 00:45:21,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:21,088 INFO L225 Difference]: With dead ends: 856 [2022-04-07 00:45:21,088 INFO L226 Difference]: Without dead ends: 853 [2022-04-07 00:45:21,088 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-04-07 00:45:21,090 INFO L913 BasicCegarLoop]: 470 mSDtfsCounter, 256 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:21,090 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 751 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-07 00:45:21,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-04-07 00:45:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 833. [2022-04-07 00:45:21,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 660 states have (on average 1.3363636363636364) internal successors, (882), 672 states have internal predecessors, (882), 100 states have call successors, (100), 62 states have call predecessors, (100), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-07 00:45:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1125 transitions. [2022-04-07 00:45:21,173 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1125 transitions. Word has length 38 [2022-04-07 00:45:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:21,173 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1125 transitions. [2022-04-07 00:45:21,173 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-04-07 00:45:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1125 transitions. [2022-04-07 00:45:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-07 00:45:21,175 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:21,175 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] [2022-04-07 00:45:21,175 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-07 00:45:21,175 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:21,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1882942142, now seen corresponding path program 1 times [2022-04-07 00:45:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:21,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1159559548] [2022-04-07 00:45:21,176 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:21,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1882942142, now seen corresponding path program 2 times [2022-04-07 00:45:21,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:21,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295070003] [2022-04-07 00:45:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:21,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:21,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:45:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:21,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:21,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295070003] [2022-04-07 00:45:21,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295070003] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:21,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:21,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:45:21,379 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:21,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1159559548] [2022-04-07 00:45:21,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1159559548] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:21,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:21,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:45:21,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958928217] [2022-04-07 00:45:21,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:21,380 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:45:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:21,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:45:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:45:21,380 INFO L87 Difference]: Start difference. First operand 833 states and 1125 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) [2022-04-07 00:45:22,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:22,971 INFO L93 Difference]: Finished difference Result 896 states and 1203 transitions. [2022-04-07 00:45:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:45:22,972 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 [2022-04-07 00:45:22,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:22,975 INFO L225 Difference]: With dead ends: 896 [2022-04-07 00:45:22,975 INFO L226 Difference]: Without dead ends: 887 [2022-04-07 00:45:22,976 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2022-04-07 00:45:22,976 INFO L913 BasicCegarLoop]: 461 mSDtfsCounter, 1620 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:22,977 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1635 Valid, 879 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-07 00:45:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-04-07 00:45:23,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 833. [2022-04-07 00:45:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 660 states have (on average 1.3333333333333333) internal successors, (880), 672 states have internal predecessors, (880), 100 states have call successors, (100), 62 states have call predecessors, (100), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-07 00:45:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1123 transitions. [2022-04-07 00:45:23,061 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1123 transitions. Word has length 39 [2022-04-07 00:45:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:23,061 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1123 transitions. [2022-04-07 00:45:23,061 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) [2022-04-07 00:45:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1123 transitions. [2022-04-07 00:45:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-07 00:45:23,062 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:23,062 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] [2022-04-07 00:45:23,062 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-07 00:45:23,062 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:23,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:23,062 INFO L85 PathProgramCache]: Analyzing trace with hash 869084370, now seen corresponding path program 1 times [2022-04-07 00:45:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:23,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1742245007] [2022-04-07 00:45:23,063 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:23,063 INFO L85 PathProgramCache]: Analyzing trace with hash 869084370, now seen corresponding path program 2 times [2022-04-07 00:45:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:23,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269142737] [2022-04-07 00:45:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:23,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:23,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:23,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:45:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:23,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:23,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269142737] [2022-04-07 00:45:23,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269142737] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:23,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:23,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:45:23,271 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:23,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1742245007] [2022-04-07 00:45:23,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1742245007] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:23,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:23,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:45:23,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909433458] [2022-04-07 00:45:23,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:23,272 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:45:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:23,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:45:23,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:45:23,273 INFO L87 Difference]: Start difference. First operand 833 states and 1123 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) [2022-04-07 00:45:25,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:25,436 INFO L93 Difference]: Finished difference Result 896 states and 1201 transitions. [2022-04-07 00:45:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:45:25,437 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 [2022-04-07 00:45:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:25,440 INFO L225 Difference]: With dead ends: 896 [2022-04-07 00:45:25,440 INFO L226 Difference]: Without dead ends: 887 [2022-04-07 00:45:25,441 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2022-04-07 00:45:25,441 INFO L913 BasicCegarLoop]: 462 mSDtfsCounter, 1396 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:25,441 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 945 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-07 00:45:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-04-07 00:45:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 833. [2022-04-07 00:45:25,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 660 states have (on average 1.3303030303030303) internal successors, (878), 672 states have internal predecessors, (878), 100 states have call successors, (100), 62 states have call predecessors, (100), 72 states have return successors, (143), 100 states have call predecessors, (143), 91 states have call successors, (143) [2022-04-07 00:45:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1121 transitions. [2022-04-07 00:45:25,552 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1121 transitions. Word has length 40 [2022-04-07 00:45:25,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:25,552 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1121 transitions. [2022-04-07 00:45:25,553 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) [2022-04-07 00:45:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1121 transitions. [2022-04-07 00:45:25,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-07 00:45:25,554 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:25,554 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] [2022-04-07 00:45:25,554 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-07 00:45:25,555 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:25,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:25,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1226727659, now seen corresponding path program 1 times [2022-04-07 00:45:25,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:25,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [799541176] [2022-04-07 00:45:25,555 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1226727659, now seen corresponding path program 2 times [2022-04-07 00:45:25,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:25,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214577138] [2022-04-07 00:45:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:25,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:25,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:25,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:45:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:25,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:25,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214577138] [2022-04-07 00:45:25,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214577138] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:25,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:25,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:25,722 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:25,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [799541176] [2022-04-07 00:45:25,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [799541176] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:25,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:25,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:25,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624427367] [2022-04-07 00:45:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:25,723 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:45:25,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:45:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:25,723 INFO L87 Difference]: Start difference. First operand 833 states and 1121 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-04-07 00:45:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:26,900 INFO L93 Difference]: Finished difference Result 896 states and 1199 transitions. [2022-04-07 00:45:26,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:45:26,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 4 states have internal predecessors, (29), 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 41 [2022-04-07 00:45:26,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:26,907 INFO L225 Difference]: With dead ends: 896 [2022-04-07 00:45:26,907 INFO L226 Difference]: Without dead ends: 881 [2022-04-07 00:45:26,908 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:45:26,910 INFO L913 BasicCegarLoop]: 482 mSDtfsCounter, 630 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:26,910 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 1385 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:45:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-04-07 00:45:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 831. [2022-04-07 00:45:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 659 states have (on average 1.3292867981790593) internal successors, (876), 671 states have internal predecessors, (876), 99 states have call successors, (99), 62 states have call predecessors, (99), 72 states have return successors, (142), 99 states have call predecessors, (142), 90 states have call successors, (142) [2022-04-07 00:45:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1117 transitions. [2022-04-07 00:45:26,998 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1117 transitions. Word has length 41 [2022-04-07 00:45:26,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:26,998 INFO L478 AbstractCegarLoop]: Abstraction has 831 states and 1117 transitions. [2022-04-07 00:45:26,998 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-04-07 00:45:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1117 transitions. [2022-04-07 00:45:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-07 00:45:27,000 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:27,000 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] [2022-04-07 00:45:27,000 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-07 00:45:27,000 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:27,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash -380785908, now seen corresponding path program 1 times [2022-04-07 00:45:27,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:27,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [221024181] [2022-04-07 00:45:27,003 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash -380785908, now seen corresponding path program 2 times [2022-04-07 00:45:27,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:27,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238923872] [2022-04-07 00:45:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:27,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:27,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-07 00:45:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:27,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:27,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238923872] [2022-04-07 00:45:27,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238923872] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:27,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:27,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:27,157 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:27,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [221024181] [2022-04-07 00:45:27,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [221024181] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:27,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:27,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:27,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42462495] [2022-04-07 00:45:27,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:27,157 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:45:27,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:27,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:45:27,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:27,158 INFO L87 Difference]: Start difference. First operand 831 states and 1117 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) [2022-04-07 00:45:28,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:28,169 INFO L93 Difference]: Finished difference Result 894 states and 1195 transitions. [2022-04-07 00:45:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:45:28,169 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 [2022-04-07 00:45:28,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:28,173 INFO L225 Difference]: With dead ends: 894 [2022-04-07 00:45:28,173 INFO L226 Difference]: Without dead ends: 874 [2022-04-07 00:45:28,173 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:45:28,174 INFO L913 BasicCegarLoop]: 478 mSDtfsCounter, 562 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:28,174 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 1345 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:45:28,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2022-04-07 00:45:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 824. [2022-04-07 00:45:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 655 states have (on average 1.3297709923664123) internal successors, (871), 667 states have internal predecessors, (871), 97 states have call successors, (97), 61 states have call predecessors, (97), 71 states have return successors, (140), 97 states have call predecessors, (140), 88 states have call successors, (140) [2022-04-07 00:45:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1108 transitions. [2022-04-07 00:45:28,254 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1108 transitions. Word has length 42 [2022-04-07 00:45:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:28,255 INFO L478 AbstractCegarLoop]: Abstraction has 824 states and 1108 transitions. [2022-04-07 00:45:28,255 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) [2022-04-07 00:45:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1108 transitions. [2022-04-07 00:45:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-07 00:45:28,256 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:28,256 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] [2022-04-07 00:45:28,256 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-07 00:45:28,256 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1082082785, now seen corresponding path program 1 times [2022-04-07 00:45:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:28,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1014531384] [2022-04-07 00:45:28,257 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1082082785, now seen corresponding path program 2 times [2022-04-07 00:45:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:28,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845351309] [2022-04-07 00:45:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:28,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:28,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:28,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:28,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:28,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845351309] [2022-04-07 00:45:28,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845351309] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:28,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:28,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:28,387 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:28,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1014531384] [2022-04-07 00:45:28,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1014531384] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:28,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:28,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:28,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764433415] [2022-04-07 00:45:28,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:28,388 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:45:28,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:45:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:45:28,388 INFO L87 Difference]: Start difference. First operand 824 states and 1108 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:45:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:29,484 INFO L93 Difference]: Finished difference Result 871 states and 1163 transitions. [2022-04-07 00:45:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:45:29,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-04-07 00:45:29,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:29,487 INFO L225 Difference]: With dead ends: 871 [2022-04-07 00:45:29,487 INFO L226 Difference]: Without dead ends: 849 [2022-04-07 00:45:29,488 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:45:29,488 INFO L913 BasicCegarLoop]: 459 mSDtfsCounter, 391 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:29,488 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1024 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:45:29,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-04-07 00:45:29,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 826. [2022-04-07 00:45:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 657 states have (on average 1.3287671232876712) internal successors, (873), 669 states have internal predecessors, (873), 97 states have call successors, (97), 61 states have call predecessors, (97), 71 states have return successors, (140), 97 states have call predecessors, (140), 88 states have call successors, (140) [2022-04-07 00:45:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1110 transitions. [2022-04-07 00:45:29,556 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1110 transitions. Word has length 42 [2022-04-07 00:45:29,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:29,556 INFO L478 AbstractCegarLoop]: Abstraction has 826 states and 1110 transitions. [2022-04-07 00:45:29,556 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:45:29,556 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1110 transitions. [2022-04-07 00:45:29,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-07 00:45:29,557 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:29,557 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] [2022-04-07 00:45:29,557 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-07 00:45:29,557 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1086081538, now seen corresponding path program 1 times [2022-04-07 00:45:29,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:29,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2109097488] [2022-04-07 00:45:29,558 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1086081538, now seen corresponding path program 2 times [2022-04-07 00:45:29,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:29,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439760687] [2022-04-07 00:45:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:29,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:29,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:29,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 00:45:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:29,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:29,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439760687] [2022-04-07 00:45:29,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439760687] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:29,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:29,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:45:29,686 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:29,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2109097488] [2022-04-07 00:45:29,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2109097488] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:29,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:29,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:45:29,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931770089] [2022-04-07 00:45:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:29,687 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 00:45:29,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 00:45:29,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:45:29,687 INFO L87 Difference]: Start difference. First operand 826 states and 1110 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:45:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:30,920 INFO L93 Difference]: Finished difference Result 922 states and 1228 transitions. [2022-04-07 00:45:30,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:45:30,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-04-07 00:45:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:30,923 INFO L225 Difference]: With dead ends: 922 [2022-04-07 00:45:30,923 INFO L226 Difference]: Without dead ends: 854 [2022-04-07 00:45:30,924 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:45:30,924 INFO L913 BasicCegarLoop]: 435 mSDtfsCounter, 313 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:30,924 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 948 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-07 00:45:30,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-04-07 00:45:30,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 830. [2022-04-07 00:45:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 660 states have (on average 1.3272727272727274) internal successors, (876), 672 states have internal predecessors, (876), 97 states have call successors, (97), 61 states have call predecessors, (97), 72 states have return successors, (142), 98 states have call predecessors, (142), 88 states have call successors, (142) [2022-04-07 00:45:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1115 transitions. [2022-04-07 00:45:30,996 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1115 transitions. Word has length 44 [2022-04-07 00:45:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:30,996 INFO L478 AbstractCegarLoop]: Abstraction has 830 states and 1115 transitions. [2022-04-07 00:45:30,996 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:45:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1115 transitions. [2022-04-07 00:45:30,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-07 00:45:30,997 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:30,997 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] [2022-04-07 00:45:30,997 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-07 00:45:30,997 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash 294854863, now seen corresponding path program 1 times [2022-04-07 00:45:30,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:30,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [988080396] [2022-04-07 00:45:30,998 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash 294854863, now seen corresponding path program 2 times [2022-04-07 00:45:30,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:30,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794212945] [2022-04-07 00:45:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:30,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:31,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:31,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:31,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:31,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:31,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:31,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794212945] [2022-04-07 00:45:31,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794212945] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:31,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:31,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:31,110 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:31,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [988080396] [2022-04-07 00:45:31,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [988080396] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:31,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:31,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:31,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255532029] [2022-04-07 00:45:31,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:31,111 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:45:31,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:31,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:45:31,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:45:31,111 INFO L87 Difference]: Start difference. First operand 830 states and 1115 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:45:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:32,148 INFO L93 Difference]: Finished difference Result 874 states and 1166 transitions. [2022-04-07 00:45:32,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:45:32,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2022-04-07 00:45:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:32,152 INFO L225 Difference]: With dead ends: 874 [2022-04-07 00:45:32,152 INFO L226 Difference]: Without dead ends: 852 [2022-04-07 00:45:32,152 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:45:32,153 INFO L913 BasicCegarLoop]: 461 mSDtfsCounter, 385 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:32,153 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 1031 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:45:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-04-07 00:45:32,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 830. [2022-04-07 00:45:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 660 states have (on average 1.3272727272727274) internal successors, (876), 672 states have internal predecessors, (876), 97 states have call successors, (97), 61 states have call predecessors, (97), 72 states have return successors, (142), 98 states have call predecessors, (142), 88 states have call successors, (142) [2022-04-07 00:45:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1115 transitions. [2022-04-07 00:45:32,244 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1115 transitions. Word has length 43 [2022-04-07 00:45:32,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:32,244 INFO L478 AbstractCegarLoop]: Abstraction has 830 states and 1115 transitions. [2022-04-07 00:45:32,244 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:45:32,244 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1115 transitions. [2022-04-07 00:45:32,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-07 00:45:32,245 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:32,246 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:32,246 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-07 00:45:32,246 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:32,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:32,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2130865808, now seen corresponding path program 1 times [2022-04-07 00:45:32,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:32,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [50228501] [2022-04-07 00:45:32,248 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:32,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2130865808, now seen corresponding path program 2 times [2022-04-07 00:45:32,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:32,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92786261] [2022-04-07 00:45:32,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:32,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:32,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:32,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:32,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:32,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:32,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:32,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92786261] [2022-04-07 00:45:32,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92786261] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:32,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:32,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:32,418 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:32,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [50228501] [2022-04-07 00:45:32,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [50228501] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:32,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:32,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:32,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795023352] [2022-04-07 00:45:32,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:32,418 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:45:32,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:45:32,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:32,419 INFO L87 Difference]: Start difference. First operand 830 states and 1115 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-04-07 00:45:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:33,703 INFO L93 Difference]: Finished difference Result 875 states and 1168 transitions. [2022-04-07 00:45:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:45:33,703 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 4 states have internal predecessors, (33), 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 45 [2022-04-07 00:45:33,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:33,713 INFO L225 Difference]: With dead ends: 875 [2022-04-07 00:45:33,713 INFO L226 Difference]: Without dead ends: 857 [2022-04-07 00:45:33,716 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 [2022-04-07 00:45:33,717 INFO L913 BasicCegarLoop]: 460 mSDtfsCounter, 428 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:33,717 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 1298 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:45:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-04-07 00:45:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 828. [2022-04-07 00:45:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 659 states have (on average 1.3262518968133536) internal successors, (874), 671 states have internal predecessors, (874), 96 states have call successors, (96), 61 states have call predecessors, (96), 72 states have return successors, (141), 97 states have call predecessors, (141), 87 states have call successors, (141) [2022-04-07 00:45:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1111 transitions. [2022-04-07 00:45:33,864 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1111 transitions. Word has length 45 [2022-04-07 00:45:33,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:33,865 INFO L478 AbstractCegarLoop]: Abstraction has 828 states and 1111 transitions. [2022-04-07 00:45:33,865 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-04-07 00:45:33,866 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1111 transitions. [2022-04-07 00:45:33,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-07 00:45:33,870 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:33,870 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:33,870 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-07 00:45:33,870 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash -144394818, now seen corresponding path program 1 times [2022-04-07 00:45:33,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:33,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1902642093] [2022-04-07 00:45:33,871 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:33,871 INFO L85 PathProgramCache]: Analyzing trace with hash -144394818, now seen corresponding path program 2 times [2022-04-07 00:45:33,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:33,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129453422] [2022-04-07 00:45:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:33,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:34,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:34,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129453422] [2022-04-07 00:45:34,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129453422] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:34,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:34,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:34,008 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:34,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1902642093] [2022-04-07 00:45:34,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1902642093] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:34,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:34,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:34,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418714197] [2022-04-07 00:45:34,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:34,008 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:45:34,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:45:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:45:34,009 INFO L87 Difference]: Start difference. First operand 828 states and 1111 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) [2022-04-07 00:45:34,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:34,938 INFO L93 Difference]: Finished difference Result 884 states and 1181 transitions. [2022-04-07 00:45:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 00:45:34,939 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 [2022-04-07 00:45:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:34,942 INFO L225 Difference]: With dead ends: 884 [2022-04-07 00:45:34,942 INFO L226 Difference]: Without dead ends: 836 [2022-04-07 00:45:34,943 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:45:34,944 INFO L913 BasicCegarLoop]: 488 mSDtfsCounter, 899 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:34,944 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 883 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:45:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-04-07 00:45:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 806. [2022-04-07 00:45:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 641 states have (on average 1.3198127925117005) internal successors, (846), 653 states have internal predecessors, (846), 96 states have call successors, (96), 61 states have call predecessors, (96), 68 states have return successors, (137), 93 states have call predecessors, (137), 87 states have call successors, (137) [2022-04-07 00:45:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1079 transitions. [2022-04-07 00:45:35,024 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1079 transitions. Word has length 46 [2022-04-07 00:45:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:35,024 INFO L478 AbstractCegarLoop]: Abstraction has 806 states and 1079 transitions. [2022-04-07 00:45:35,024 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) [2022-04-07 00:45:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1079 transitions. [2022-04-07 00:45:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-07 00:45:35,025 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:35,025 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:35,025 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-07 00:45:35,025 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:35,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2121731367, now seen corresponding path program 1 times [2022-04-07 00:45:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:35,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1921629312] [2022-04-07 00:45:35,026 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2121731367, now seen corresponding path program 2 times [2022-04-07 00:45:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:35,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040893155] [2022-04-07 00:45:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:35,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:35,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 00:45:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:35,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:35,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040893155] [2022-04-07 00:45:35,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040893155] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:35,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:35,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 00:45:35,139 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:35,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1921629312] [2022-04-07 00:45:35,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1921629312] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:35,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:35,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-07 00:45:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634284218] [2022-04-07 00:45:35,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:35,139 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-07 00:45:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:35,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-07 00:45:35,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-07 00:45:35,140 INFO L87 Difference]: Start difference. First operand 806 states and 1079 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:45:36,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:36,457 INFO L93 Difference]: Finished difference Result 1165 states and 1573 transitions. [2022-04-07 00:45:36,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:45:36,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2022-04-07 00:45:36,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:36,461 INFO L225 Difference]: With dead ends: 1165 [2022-04-07 00:45:36,461 INFO L226 Difference]: Without dead ends: 1162 [2022-04-07 00:45:36,462 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:36,462 INFO L913 BasicCegarLoop]: 538 mSDtfsCounter, 582 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:36,462 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 791 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:45:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-04-07 00:45:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 919. [2022-04-07 00:45:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 732 states have (on average 1.325136612021858) internal successors, (970), 746 states have internal predecessors, (970), 106 states have call successors, (106), 71 states have call predecessors, (106), 80 states have return successors, (157), 103 states have call predecessors, (157), 97 states have call successors, (157) [2022-04-07 00:45:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1233 transitions. [2022-04-07 00:45:36,570 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1233 transitions. Word has length 47 [2022-04-07 00:45:36,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:36,570 INFO L478 AbstractCegarLoop]: Abstraction has 919 states and 1233 transitions. [2022-04-07 00:45:36,571 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-07 00:45:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1233 transitions. [2022-04-07 00:45:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-07 00:45:36,571 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:36,571 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:36,571 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-07 00:45:36,572 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1847199717, now seen corresponding path program 1 times [2022-04-07 00:45:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:36,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1792867693] [2022-04-07 00:45:36,572 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1847199717, now seen corresponding path program 2 times [2022-04-07 00:45:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:36,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347630218] [2022-04-07 00:45:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:36,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:36,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:45:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:36,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:45:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:36,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:36,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347630218] [2022-04-07 00:45:36,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347630218] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:36,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:36,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:36,776 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:36,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1792867693] [2022-04-07 00:45:36,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1792867693] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:36,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:36,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:36,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890781220] [2022-04-07 00:45:36,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:36,777 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:45:36,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:36,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:45:36,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:36,778 INFO L87 Difference]: Start difference. First operand 919 states and 1233 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 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) [2022-04-07 00:45:37,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:37,810 INFO L93 Difference]: Finished difference Result 964 states and 1286 transitions. [2022-04-07 00:45:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-07 00:45:37,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 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 47 [2022-04-07 00:45:37,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:37,813 INFO L225 Difference]: With dead ends: 964 [2022-04-07 00:45:37,813 INFO L226 Difference]: Without dead ends: 946 [2022-04-07 00:45:37,814 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:37,814 INFO L913 BasicCegarLoop]: 453 mSDtfsCounter, 560 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:37,814 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 1361 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:45:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-04-07 00:45:37,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 917. [2022-04-07 00:45:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 731 states have (on average 1.3242134062927498) internal successors, (968), 745 states have internal predecessors, (968), 105 states have call successors, (105), 71 states have call predecessors, (105), 80 states have return successors, (156), 102 states have call predecessors, (156), 96 states have call successors, (156) [2022-04-07 00:45:37,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1229 transitions. [2022-04-07 00:45:37,900 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1229 transitions. Word has length 47 [2022-04-07 00:45:37,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:37,900 INFO L478 AbstractCegarLoop]: Abstraction has 917 states and 1229 transitions. [2022-04-07 00:45:37,900 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 4 states have internal predecessors, (35), 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) [2022-04-07 00:45:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1229 transitions. [2022-04-07 00:45:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-07 00:45:37,901 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:37,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:37,901 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-07 00:45:37,901 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:37,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1587222462, now seen corresponding path program 1 times [2022-04-07 00:45:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:37,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [194322278] [2022-04-07 00:45:37,902 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1587222462, now seen corresponding path program 2 times [2022-04-07 00:45:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:37,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911105991] [2022-04-07 00:45:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:37,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:38,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-04-07 00:45:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:38,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:38,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:38,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911105991] [2022-04-07 00:45:38,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911105991] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:38,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:38,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:38,063 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:38,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [194322278] [2022-04-07 00:45:38,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [194322278] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:38,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:38,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:38,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24974141] [2022-04-07 00:45:38,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:38,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:45:38,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:38,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:45:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:38,064 INFO L87 Difference]: Start difference. First operand 917 states and 1229 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-07 00:45:39,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:39,376 INFO L93 Difference]: Finished difference Result 1517 states and 1994 transitions. [2022-04-07 00:45:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:45:39,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2022-04-07 00:45:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:39,380 INFO L225 Difference]: With dead ends: 1517 [2022-04-07 00:45:39,380 INFO L226 Difference]: Without dead ends: 967 [2022-04-07 00:45:39,385 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-04-07 00:45:39,385 INFO L913 BasicCegarLoop]: 561 mSDtfsCounter, 2188 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:39,386 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2200 Valid, 791 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:45:39,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-04-07 00:45:39,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 908. [2022-04-07 00:45:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 722 states have (on average 1.311634349030471) internal successors, (947), 736 states have internal predecessors, (947), 105 states have call successors, (105), 71 states have call predecessors, (105), 80 states have return successors, (156), 102 states have call predecessors, (156), 96 states have call successors, (156) [2022-04-07 00:45:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1208 transitions. [2022-04-07 00:45:39,536 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1208 transitions. Word has length 48 [2022-04-07 00:45:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:39,537 INFO L478 AbstractCegarLoop]: Abstraction has 908 states and 1208 transitions. [2022-04-07 00:45:39,537 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 6 states have internal predecessors, (36), 4 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-07 00:45:39,537 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1208 transitions. [2022-04-07 00:45:39,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-07 00:45:39,538 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:39,538 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] [2022-04-07 00:45:39,538 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-07 00:45:39,538 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2120912959, now seen corresponding path program 1 times [2022-04-07 00:45:39,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:39,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [641109977] [2022-04-07 00:45:39,539 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2120912959, now seen corresponding path program 2 times [2022-04-07 00:45:39,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:39,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625318052] [2022-04-07 00:45:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:39,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:39,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:39,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:39,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:39,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625318052] [2022-04-07 00:45:39,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625318052] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:39,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:39,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:45:39,696 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:39,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [641109977] [2022-04-07 00:45:39,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [641109977] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:39,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:39,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:45:39,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742362552] [2022-04-07 00:45:39,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:39,696 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:45:39,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:39,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:45:39,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:45:39,697 INFO L87 Difference]: Start difference. First operand 908 states and 1208 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 00:45:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:41,245 INFO L93 Difference]: Finished difference Result 1185 states and 1572 transitions. [2022-04-07 00:45:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-07 00:45:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 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 [2022-04-07 00:45:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:41,249 INFO L225 Difference]: With dead ends: 1185 [2022-04-07 00:45:41,249 INFO L226 Difference]: Without dead ends: 1106 [2022-04-07 00:45:41,250 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-04-07 00:45:41,251 INFO L913 BasicCegarLoop]: 542 mSDtfsCounter, 1472 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:41,252 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1476 Valid, 1201 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:45:41,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-04-07 00:45:41,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 963. [2022-04-07 00:45:41,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 766 states have (on average 1.3054830287206267) internal successors, (1000), 782 states have internal predecessors, (1000), 108 states have call successors, (108), 72 states have call predecessors, (108), 88 states have return successors, (173), 109 states have call predecessors, (173), 99 states have call successors, (173) [2022-04-07 00:45:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1281 transitions. [2022-04-07 00:45:41,362 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1281 transitions. Word has length 50 [2022-04-07 00:45:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:41,363 INFO L478 AbstractCegarLoop]: Abstraction has 963 states and 1281 transitions. [2022-04-07 00:45:41,363 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 00:45:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1281 transitions. [2022-04-07 00:45:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-07 00:45:41,366 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:41,366 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] [2022-04-07 00:45:41,366 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-07 00:45:41,366 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:41,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1876216893, now seen corresponding path program 1 times [2022-04-07 00:45:41,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:41,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [28363480] [2022-04-07 00:45:41,367 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1876216893, now seen corresponding path program 2 times [2022-04-07 00:45:41,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:41,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345891952] [2022-04-07 00:45:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:41,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:41,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:41,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:41,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:45:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:41,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:41,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345891952] [2022-04-07 00:45:41,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345891952] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:41,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:41,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:45:41,526 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:41,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [28363480] [2022-04-07 00:45:41,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [28363480] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:41,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:41,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:45:41,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999102285] [2022-04-07 00:45:41,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:41,526 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:45:41,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:41,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:45:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:45:41,527 INFO L87 Difference]: Start difference. First operand 963 states and 1281 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) [2022-04-07 00:45:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:42,439 INFO L93 Difference]: Finished difference Result 1010 states and 1334 transitions. [2022-04-07 00:45:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:45:42,440 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 [2022-04-07 00:45:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:42,443 INFO L225 Difference]: With dead ends: 1010 [2022-04-07 00:45:42,443 INFO L226 Difference]: Without dead ends: 990 [2022-04-07 00:45:42,443 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 [2022-04-07 00:45:42,444 INFO L913 BasicCegarLoop]: 447 mSDtfsCounter, 843 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:42,444 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 1381 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:45:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-04-07 00:45:42,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 963. [2022-04-07 00:45:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 766 states have (on average 1.2898172323759791) internal successors, (988), 782 states have internal predecessors, (988), 108 states have call successors, (108), 72 states have call predecessors, (108), 88 states have return successors, (173), 109 states have call predecessors, (173), 99 states have call successors, (173) [2022-04-07 00:45:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1269 transitions. [2022-04-07 00:45:42,577 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1269 transitions. Word has length 50 [2022-04-07 00:45:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:42,577 INFO L478 AbstractCegarLoop]: Abstraction has 963 states and 1269 transitions. [2022-04-07 00:45:42,578 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) [2022-04-07 00:45:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1269 transitions. [2022-04-07 00:45:42,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-07 00:45:42,578 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:42,578 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] [2022-04-07 00:45:42,579 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-07 00:45:42,579 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:42,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:42,579 INFO L85 PathProgramCache]: Analyzing trace with hash -993977049, now seen corresponding path program 1 times [2022-04-07 00:45:42,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:42,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1249054426] [2022-04-07 00:45:42,579 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:42,579 INFO L85 PathProgramCache]: Analyzing trace with hash -993977049, now seen corresponding path program 2 times [2022-04-07 00:45:42,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:42,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003886182] [2022-04-07 00:45:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:42,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 00:45:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:42,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:42,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003886182] [2022-04-07 00:45:42,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003886182] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:42,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:42,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:42,684 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:42,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1249054426] [2022-04-07 00:45:42,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1249054426] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:42,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:42,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571810001] [2022-04-07 00:45:42,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:42,684 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:45:42,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:45:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:45:42,685 INFO L87 Difference]: Start difference. First operand 963 states and 1269 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-07 00:45:43,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:43,611 INFO L93 Difference]: Finished difference Result 1072 states and 1383 transitions. [2022-04-07 00:45:43,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:45:43,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2022-04-07 00:45:43,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:43,614 INFO L225 Difference]: With dead ends: 1072 [2022-04-07 00:45:43,614 INFO L226 Difference]: Without dead ends: 716 [2022-04-07 00:45:43,615 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:45:43,616 INFO L913 BasicCegarLoop]: 473 mSDtfsCounter, 863 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:43,616 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 839 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:45:43,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-04-07 00:45:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 654. [2022-04-07 00:45:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 523 states have (on average 1.27151051625239) internal successors, (665), 534 states have internal predecessors, (665), 74 states have call successors, (74), 47 states have call predecessors, (74), 56 states have return successors, (90), 73 states have call predecessors, (90), 65 states have call successors, (90) [2022-04-07 00:45:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 829 transitions. [2022-04-07 00:45:43,726 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 829 transitions. Word has length 52 [2022-04-07 00:45:43,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:43,727 INFO L478 AbstractCegarLoop]: Abstraction has 654 states and 829 transitions. [2022-04-07 00:45:43,727 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-07 00:45:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 829 transitions. [2022-04-07 00:45:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-07 00:45:43,728 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:43,728 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] [2022-04-07 00:45:43,728 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-07 00:45:43,728 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:43,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash -752682980, now seen corresponding path program 1 times [2022-04-07 00:45:43,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:43,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [828062006] [2022-04-07 00:45:43,728 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash -752682980, now seen corresponding path program 2 times [2022-04-07 00:45:43,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:43,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971315965] [2022-04-07 00:45:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:43,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:43,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:43,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:43,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:45:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:43,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:43,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971315965] [2022-04-07 00:45:43,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971315965] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:43,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:43,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:45:43,889 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:43,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [828062006] [2022-04-07 00:45:43,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [828062006] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:43,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:43,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:45:43,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461167944] [2022-04-07 00:45:43,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:43,890 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:45:43,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:43,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:45:43,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:45:43,890 INFO L87 Difference]: Start difference. First operand 654 states and 829 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 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) [2022-04-07 00:45:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:45,569 INFO L93 Difference]: Finished difference Result 712 states and 898 transitions. [2022-04-07 00:45:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:45:45,569 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 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 51 [2022-04-07 00:45:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:45,571 INFO L225 Difference]: With dead ends: 712 [2022-04-07 00:45:45,571 INFO L226 Difference]: Without dead ends: 690 [2022-04-07 00:45:45,572 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-04-07 00:45:45,573 INFO L913 BasicCegarLoop]: 419 mSDtfsCounter, 297 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 2650 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:45,575 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 1097 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2650 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-07 00:45:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-04-07 00:45:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 655. [2022-04-07 00:45:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 524 states have (on average 1.2709923664122138) internal successors, (666), 534 states have internal predecessors, (666), 74 states have call successors, (74), 47 states have call predecessors, (74), 56 states have return successors, (90), 74 states have call predecessors, (90), 65 states have call successors, (90) [2022-04-07 00:45:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 830 transitions. [2022-04-07 00:45:45,716 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 830 transitions. Word has length 51 [2022-04-07 00:45:45,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:45,717 INFO L478 AbstractCegarLoop]: Abstraction has 655 states and 830 transitions. [2022-04-07 00:45:45,717 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 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) [2022-04-07 00:45:45,717 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 830 transitions. [2022-04-07 00:45:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-07 00:45:45,729 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:45,730 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:45,730 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-07 00:45:45,730 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:45,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1676814037, now seen corresponding path program 1 times [2022-04-07 00:45:45,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:45,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [294024040] [2022-04-07 00:45:45,730 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:45,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1676814037, now seen corresponding path program 2 times [2022-04-07 00:45:45,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:45,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092447274] [2022-04-07 00:45:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:45,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:45,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:45,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:45,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:45,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:45,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:45:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:45,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:45,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092447274] [2022-04-07 00:45:45,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092447274] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:45,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:45,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:45:45,918 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:45,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [294024040] [2022-04-07 00:45:45,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [294024040] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:45,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:45,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:45:45,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500776500] [2022-04-07 00:45:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:45,919 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:45:45,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:45:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:45:45,919 INFO L87 Difference]: Start difference. First operand 655 states and 830 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 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) [2022-04-07 00:45:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:47,087 INFO L93 Difference]: Finished difference Result 707 states and 889 transitions. [2022-04-07 00:45:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:45:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 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 51 [2022-04-07 00:45:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:47,089 INFO L225 Difference]: With dead ends: 707 [2022-04-07 00:45:47,089 INFO L226 Difference]: Without dead ends: 679 [2022-04-07 00:45:47,090 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-04-07 00:45:47,090 INFO L913 BasicCegarLoop]: 447 mSDtfsCounter, 531 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:47,090 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 1496 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:45:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-04-07 00:45:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 647. [2022-04-07 00:45:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 516 states have (on average 1.2655038759689923) internal successors, (653), 526 states have internal predecessors, (653), 74 states have call successors, (74), 47 states have call predecessors, (74), 56 states have return successors, (90), 74 states have call predecessors, (90), 65 states have call successors, (90) [2022-04-07 00:45:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 817 transitions. [2022-04-07 00:45:47,176 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 817 transitions. Word has length 51 [2022-04-07 00:45:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:47,176 INFO L478 AbstractCegarLoop]: Abstraction has 647 states and 817 transitions. [2022-04-07 00:45:47,176 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 5 states have internal predecessors, (39), 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) [2022-04-07 00:45:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 817 transitions. [2022-04-07 00:45:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-07 00:45:47,177 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:47,177 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] [2022-04-07 00:45:47,177 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-07 00:45:47,178 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1294250438, now seen corresponding path program 1 times [2022-04-07 00:45:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:47,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1688606525] [2022-04-07 00:45:47,178 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1294250438, now seen corresponding path program 2 times [2022-04-07 00:45:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:47,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319208390] [2022-04-07 00:45:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:47,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:47,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:47,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:47,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319208390] [2022-04-07 00:45:47,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319208390] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:47,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:47,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:47,294 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:47,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1688606525] [2022-04-07 00:45:47,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1688606525] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:47,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:47,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:47,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922823032] [2022-04-07 00:45:47,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:47,294 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:45:47,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:47,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:45:47,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:45:47,295 INFO L87 Difference]: Start difference. First operand 647 states and 817 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, (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) [2022-04-07 00:45:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:48,690 INFO L93 Difference]: Finished difference Result 902 states and 1158 transitions. [2022-04-07 00:45:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:45:48,698 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, (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 52 [2022-04-07 00:45:48,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:48,708 INFO L225 Difference]: With dead ends: 902 [2022-04-07 00:45:48,708 INFO L226 Difference]: Without dead ends: 884 [2022-04-07 00:45:48,709 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:48,709 INFO L913 BasicCegarLoop]: 562 mSDtfsCounter, 463 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:48,709 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 1079 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-07 00:45:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-04-07 00:45:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 708. [2022-04-07 00:45:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 568 states have (on average 1.2517605633802817) internal successors, (711), 571 states have internal predecessors, (711), 76 states have call successors, (76), 49 states have call predecessors, (76), 63 states have return successors, (104), 88 states have call predecessors, (104), 67 states have call successors, (104) [2022-04-07 00:45:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 891 transitions. [2022-04-07 00:45:48,810 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 891 transitions. Word has length 52 [2022-04-07 00:45:48,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:48,810 INFO L478 AbstractCegarLoop]: Abstraction has 708 states and 891 transitions. [2022-04-07 00:45:48,810 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, (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) [2022-04-07 00:45:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 891 transitions. [2022-04-07 00:45:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-07 00:45:48,811 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:48,811 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] [2022-04-07 00:45:48,811 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-07 00:45:48,812 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:48,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1555648314, now seen corresponding path program 1 times [2022-04-07 00:45:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:48,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1688527486] [2022-04-07 00:45:48,812 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1555648314, now seen corresponding path program 2 times [2022-04-07 00:45:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:48,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129839209] [2022-04-07 00:45:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:48,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:48,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:48,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129839209] [2022-04-07 00:45:48,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129839209] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:48,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:48,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:48,984 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:48,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1688527486] [2022-04-07 00:45:48,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1688527486] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:48,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:48,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837946275] [2022-04-07 00:45:48,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:48,985 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:45:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:45:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:48,985 INFO L87 Difference]: Start difference. First operand 708 states and 891 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 00:45:50,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:50,134 INFO L93 Difference]: Finished difference Result 1148 states and 1477 transitions. [2022-04-07 00:45:50,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:45:50,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 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 52 [2022-04-07 00:45:50,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:50,138 INFO L225 Difference]: With dead ends: 1148 [2022-04-07 00:45:50,138 INFO L226 Difference]: Without dead ends: 771 [2022-04-07 00:45:50,148 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:45:50,148 INFO L913 BasicCegarLoop]: 401 mSDtfsCounter, 1048 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:50,148 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 815 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:45:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-04-07 00:45:50,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 719. [2022-04-07 00:45:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 579 states have (on average 1.2556131260794474) internal successors, (727), 582 states have internal predecessors, (727), 76 states have call successors, (76), 49 states have call predecessors, (76), 63 states have return successors, (104), 88 states have call predecessors, (104), 67 states have call successors, (104) [2022-04-07 00:45:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 907 transitions. [2022-04-07 00:45:50,258 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 907 transitions. Word has length 52 [2022-04-07 00:45:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:50,258 INFO L478 AbstractCegarLoop]: Abstraction has 719 states and 907 transitions. [2022-04-07 00:45:50,258 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-07 00:45:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 907 transitions. [2022-04-07 00:45:50,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-07 00:45:50,259 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:50,259 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] [2022-04-07 00:45:50,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-07 00:45:50,259 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:50,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:50,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1150971080, now seen corresponding path program 1 times [2022-04-07 00:45:50,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:50,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [827953789] [2022-04-07 00:45:50,260 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:50,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1150971080, now seen corresponding path program 2 times [2022-04-07 00:45:50,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:50,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510530252] [2022-04-07 00:45:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:50,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:50,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:50,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:50,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:50,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:50,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:50,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510530252] [2022-04-07 00:45:50,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510530252] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:50,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:50,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:45:50,461 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:50,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [827953789] [2022-04-07 00:45:50,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [827953789] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:50,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:50,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:45:50,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056198732] [2022-04-07 00:45:50,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:50,462 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:45:50,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:50,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:45:50,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:45:50,463 INFO L87 Difference]: Start difference. First operand 719 states and 907 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 00:45:51,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:51,830 INFO L93 Difference]: Finished difference Result 787 states and 988 transitions. [2022-04-07 00:45:51,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 00:45:51,830 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 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 52 [2022-04-07 00:45:51,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:51,833 INFO L225 Difference]: With dead ends: 787 [2022-04-07 00:45:51,833 INFO L226 Difference]: Without dead ends: 705 [2022-04-07 00:45:51,834 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2022-04-07 00:45:51,834 INFO L913 BasicCegarLoop]: 408 mSDtfsCounter, 1330 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:51,834 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 1195 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:45:51,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-04-07 00:45:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 657. [2022-04-07 00:45:51,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.2571428571428571) internal successors, (660), 535 states have internal predecessors, (660), 74 states have call successors, (74), 47 states have call predecessors, (74), 57 states have return successors, (91), 75 states have call predecessors, (91), 65 states have call successors, (91) [2022-04-07 00:45:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 825 transitions. [2022-04-07 00:45:51,942 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 825 transitions. Word has length 52 [2022-04-07 00:45:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:51,943 INFO L478 AbstractCegarLoop]: Abstraction has 657 states and 825 transitions. [2022-04-07 00:45:51,943 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-07 00:45:51,943 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 825 transitions. [2022-04-07 00:45:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-07 00:45:51,967 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:51,967 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:51,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-07 00:45:51,967 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1919936960, now seen corresponding path program 1 times [2022-04-07 00:45:51,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:51,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1686178306] [2022-04-07 00:45:51,968 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1919936960, now seen corresponding path program 2 times [2022-04-07 00:45:51,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:51,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7277381] [2022-04-07 00:45:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:52,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:52,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:52,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:52,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:52,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:52,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7277381] [2022-04-07 00:45:52,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7277381] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:52,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:52,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:45:52,132 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:52,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1686178306] [2022-04-07 00:45:52,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1686178306] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:52,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:52,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:45:52,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833640791] [2022-04-07 00:45:52,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:52,133 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:45:52,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:52,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:45:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:45:52,134 INFO L87 Difference]: Start difference. First operand 657 states and 825 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-04-07 00:45:53,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:53,437 INFO L93 Difference]: Finished difference Result 702 states and 877 transitions. [2022-04-07 00:45:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:45:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 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 53 [2022-04-07 00:45:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:53,440 INFO L225 Difference]: With dead ends: 702 [2022-04-07 00:45:53,440 INFO L226 Difference]: Without dead ends: 698 [2022-04-07 00:45:53,440 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 [2022-04-07 00:45:53,440 INFO L913 BasicCegarLoop]: 426 mSDtfsCounter, 335 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 2653 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:53,440 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 1745 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2653 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-07 00:45:53,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-04-07 00:45:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 665. [2022-04-07 00:45:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 532 states have (on average 1.2537593984962405) internal successors, (667), 542 states have internal predecessors, (667), 74 states have call successors, (74), 47 states have call predecessors, (74), 58 states have return successors, (92), 76 states have call predecessors, (92), 65 states have call successors, (92) [2022-04-07 00:45:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 833 transitions. [2022-04-07 00:45:53,563 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 833 transitions. Word has length 53 [2022-04-07 00:45:53,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:53,564 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 833 transitions. [2022-04-07 00:45:53,565 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-04-07 00:45:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 833 transitions. [2022-04-07 00:45:53,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-07 00:45:53,567 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:53,567 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:53,568 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-07 00:45:53,568 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:53,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:53,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1919660130, now seen corresponding path program 1 times [2022-04-07 00:45:53,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:53,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [110725360] [2022-04-07 00:45:53,569 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1919660130, now seen corresponding path program 2 times [2022-04-07 00:45:53,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:53,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503322795] [2022-04-07 00:45:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:53,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:53,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:53,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503322795] [2022-04-07 00:45:53,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503322795] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:53,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:53,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:45:53,820 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:53,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [110725360] [2022-04-07 00:45:53,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [110725360] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:53,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:53,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:45:53,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846522073] [2022-04-07 00:45:53,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:53,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:45:53,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:53,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:45:53,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:45:53,821 INFO L87 Difference]: Start difference. First operand 665 states and 833 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-04-07 00:45:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:55,043 INFO L93 Difference]: Finished difference Result 743 states and 936 transitions. [2022-04-07 00:45:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:45:55,043 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 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 53 [2022-04-07 00:45:55,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:55,046 INFO L225 Difference]: With dead ends: 743 [2022-04-07 00:45:55,046 INFO L226 Difference]: Without dead ends: 728 [2022-04-07 00:45:55,047 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:45:55,047 INFO L913 BasicCegarLoop]: 423 mSDtfsCounter, 535 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:55,048 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1850 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:45:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-04-07 00:45:55,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 671. [2022-04-07 00:45:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 537 states have (on average 1.2513966480446927) internal successors, (672), 548 states have internal predecessors, (672), 74 states have call successors, (74), 47 states have call predecessors, (74), 59 states have return successors, (99), 76 states have call predecessors, (99), 65 states have call successors, (99) [2022-04-07 00:45:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 845 transitions. [2022-04-07 00:45:55,161 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 845 transitions. Word has length 53 [2022-04-07 00:45:55,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:55,161 INFO L478 AbstractCegarLoop]: Abstraction has 671 states and 845 transitions. [2022-04-07 00:45:55,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-04-07 00:45:55,161 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 845 transitions. [2022-04-07 00:45:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-07 00:45:55,162 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:55,162 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] [2022-04-07 00:45:55,162 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-07 00:45:55,162 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:55,162 INFO L85 PathProgramCache]: Analyzing trace with hash 196330826, now seen corresponding path program 1 times [2022-04-07 00:45:55,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:55,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1981894840] [2022-04-07 00:45:55,163 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash 196330826, now seen corresponding path program 2 times [2022-04-07 00:45:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:55,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392261077] [2022-04-07 00:45:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:55,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:55,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:55,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:55,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:55,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392261077] [2022-04-07 00:45:55,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392261077] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:55,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:55,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:55,368 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:55,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1981894840] [2022-04-07 00:45:55,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1981894840] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:55,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:55,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:55,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553784673] [2022-04-07 00:45:55,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:55,369 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:45:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:45:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:55,370 INFO L87 Difference]: Start difference. First operand 671 states and 845 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 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) [2022-04-07 00:45:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:56,719 INFO L93 Difference]: Finished difference Result 854 states and 1095 transitions. [2022-04-07 00:45:56,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 00:45:56,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 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 54 [2022-04-07 00:45:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:56,723 INFO L225 Difference]: With dead ends: 854 [2022-04-07 00:45:56,723 INFO L226 Difference]: Without dead ends: 836 [2022-04-07 00:45:56,723 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-04-07 00:45:56,723 INFO L913 BasicCegarLoop]: 539 mSDtfsCounter, 1301 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:56,724 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 981 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:45:56,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-04-07 00:45:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 655. [2022-04-07 00:45:56,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 524 states have (on average 1.2557251908396947) internal successors, (658), 534 states have internal predecessors, (658), 73 states have call successors, (73), 47 states have call predecessors, (73), 57 states have return successors, (90), 74 states have call predecessors, (90), 64 states have call successors, (90) [2022-04-07 00:45:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 821 transitions. [2022-04-07 00:45:56,862 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 821 transitions. Word has length 54 [2022-04-07 00:45:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:56,862 INFO L478 AbstractCegarLoop]: Abstraction has 655 states and 821 transitions. [2022-04-07 00:45:56,862 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 5 states have internal predecessors, (42), 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) [2022-04-07 00:45:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 821 transitions. [2022-04-07 00:45:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-07 00:45:56,863 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:56,863 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] [2022-04-07 00:45:56,863 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-07 00:45:56,864 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:56,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1186901667, now seen corresponding path program 1 times [2022-04-07 00:45:56,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:56,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [142216764] [2022-04-07 00:45:56,864 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:56,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1186901667, now seen corresponding path program 2 times [2022-04-07 00:45:56,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:56,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683449182] [2022-04-07 00:45:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:56,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:56,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:56,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:45:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-07 00:45:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:57,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:57,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683449182] [2022-04-07 00:45:57,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683449182] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:57,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:57,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:45:57,043 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:57,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [142216764] [2022-04-07 00:45:57,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [142216764] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:57,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:57,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:45:57,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299769646] [2022-04-07 00:45:57,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:57,044 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:45:57,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:57,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:45:57,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:45:57,044 INFO L87 Difference]: Start difference. First operand 655 states and 821 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:45:58,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:58,209 INFO L93 Difference]: Finished difference Result 701 states and 873 transitions. [2022-04-07 00:45:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:45:58,210 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 55 [2022-04-07 00:45:58,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:58,212 INFO L225 Difference]: With dead ends: 701 [2022-04-07 00:45:58,212 INFO L226 Difference]: Without dead ends: 673 [2022-04-07 00:45:58,212 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:45:58,213 INFO L913 BasicCegarLoop]: 420 mSDtfsCounter, 413 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:58,213 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 1794 Invalid, 2546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:45:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-04-07 00:45:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 643. [2022-04-07 00:45:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 515 states have (on average 1.254368932038835) internal successors, (646), 525 states have internal predecessors, (646), 71 states have call successors, (71), 46 states have call predecessors, (71), 56 states have return successors, (88), 72 states have call predecessors, (88), 62 states have call successors, (88) [2022-04-07 00:45:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 805 transitions. [2022-04-07 00:45:58,322 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 805 transitions. Word has length 55 [2022-04-07 00:45:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:58,323 INFO L478 AbstractCegarLoop]: Abstraction has 643 states and 805 transitions. [2022-04-07 00:45:58,323 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:45:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 805 transitions. [2022-04-07 00:45:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-07 00:45:58,324 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:58,324 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:58,324 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-07 00:45:58,324 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:58,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:58,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1383313945, now seen corresponding path program 1 times [2022-04-07 00:45:58,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:58,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1772879143] [2022-04-07 00:45:58,325 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:58,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1383313945, now seen corresponding path program 2 times [2022-04-07 00:45:58,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:58,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244585011] [2022-04-07 00:45:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:58,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:58,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-07 00:45:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-04-07 00:45:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:58,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:58,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244585011] [2022-04-07 00:45:58,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244585011] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:58,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:58,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:58,467 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:58,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1772879143] [2022-04-07 00:45:58,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1772879143] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:58,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:58,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-07 00:45:58,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957235581] [2022-04-07 00:45:58,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:58,467 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 00:45:58,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:58,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 00:45:58,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-07 00:45:58,468 INFO L87 Difference]: Start difference. First operand 643 states and 805 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:45:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:45:59,225 INFO L93 Difference]: Finished difference Result 991 states and 1256 transitions. [2022-04-07 00:45:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:45:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-04-07 00:45:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:45:59,228 INFO L225 Difference]: With dead ends: 991 [2022-04-07 00:45:59,228 INFO L226 Difference]: Without dead ends: 682 [2022-04-07 00:45:59,234 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 [2022-04-07 00:45:59,234 INFO L913 BasicCegarLoop]: 402 mSDtfsCounter, 472 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:45:59,235 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 867 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:45:59,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-04-07 00:45:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 648. [2022-04-07 00:45:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 519 states have (on average 1.2485549132947977) internal successors, (648), 530 states have internal predecessors, (648), 71 states have call successors, (71), 46 states have call predecessors, (71), 57 states have return successors, (92), 72 states have call predecessors, (92), 62 states have call successors, (92) [2022-04-07 00:45:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 811 transitions. [2022-04-07 00:45:59,350 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 811 transitions. Word has length 58 [2022-04-07 00:45:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:45:59,350 INFO L478 AbstractCegarLoop]: Abstraction has 648 states and 811 transitions. [2022-04-07 00:45:59,350 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:45:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 811 transitions. [2022-04-07 00:45:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-07 00:45:59,379 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:45:59,379 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:45:59,380 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-07 00:45:59,380 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:45:59,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:45:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash 643685188, now seen corresponding path program 1 times [2022-04-07 00:45:59,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:59,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [76131889] [2022-04-07 00:45:59,385 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:45:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash 643685188, now seen corresponding path program 2 times [2022-04-07 00:45:59,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:45:59,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821891474] [2022-04-07 00:45:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:45:59,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:45:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:59,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:45:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:59,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:45:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:45:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-07 00:45:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:45:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:45:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:45:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:45:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:45:59,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821891474] [2022-04-07 00:45:59,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821891474] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:59,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:59,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:59,678 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:45:59,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [76131889] [2022-04-07 00:45:59,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [76131889] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:45:59,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:45:59,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:45:59,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244057761] [2022-04-07 00:45:59,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:45:59,679 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:45:59,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:45:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:45:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:45:59,680 INFO L87 Difference]: Start difference. First operand 648 states and 811 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:46:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:00,682 INFO L93 Difference]: Finished difference Result 945 states and 1195 transitions. [2022-04-07 00:46:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-07 00:46:00,682 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2022-04-07 00:46:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:00,684 INFO L225 Difference]: With dead ends: 945 [2022-04-07 00:46:00,685 INFO L226 Difference]: Without dead ends: 631 [2022-04-07 00:46:00,686 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:46:00,686 INFO L913 BasicCegarLoop]: 404 mSDtfsCounter, 383 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:00,687 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 1241 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:46:00,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-04-07 00:46:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 593. [2022-04-07 00:46:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 472 states have (on average 1.2372881355932204) internal successors, (584), 480 states have internal predecessors, (584), 68 states have call successors, (68), 45 states have call predecessors, (68), 52 states have return successors, (81), 68 states have call predecessors, (81), 60 states have call successors, (81) [2022-04-07 00:46:00,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 733 transitions. [2022-04-07 00:46:00,804 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 733 transitions. Word has length 64 [2022-04-07 00:46:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:00,804 INFO L478 AbstractCegarLoop]: Abstraction has 593 states and 733 transitions. [2022-04-07 00:46:00,805 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:46:00,805 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 733 transitions. [2022-04-07 00:46:00,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-07 00:46:00,806 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:00,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:46:00,806 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-07 00:46:00,806 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:00,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1886131064, now seen corresponding path program 1 times [2022-04-07 00:46:00,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:00,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1061752838] [2022-04-07 00:46:00,807 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:00,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1886131064, now seen corresponding path program 2 times [2022-04-07 00:46:00,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:00,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635667704] [2022-04-07 00:46:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:00,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:00,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:46:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:00,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:46:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:00,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-07 00:46:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:00,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:00,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635667704] [2022-04-07 00:46:00,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635667704] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:00,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:00,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:00,992 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:00,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1061752838] [2022-04-07 00:46:00,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1061752838] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:00,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:00,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792709992] [2022-04-07 00:46:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:00,993 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:46:00,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:46:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:46:00,993 INFO L87 Difference]: Start difference. First operand 593 states and 733 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:46:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:02,622 INFO L93 Difference]: Finished difference Result 638 states and 785 transitions. [2022-04-07 00:46:02,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 00:46:02,622 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-04-07 00:46:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:02,631 INFO L225 Difference]: With dead ends: 638 [2022-04-07 00:46:02,631 INFO L226 Difference]: Without dead ends: 617 [2022-04-07 00:46:02,632 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:46:02,632 INFO L913 BasicCegarLoop]: 396 mSDtfsCounter, 847 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:02,632 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 1303 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-07 00:46:02,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-04-07 00:46:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 590. [2022-04-07 00:46:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 469 states have (on average 1.2388059701492538) internal successors, (581), 478 states have internal predecessors, (581), 68 states have call successors, (68), 45 states have call predecessors, (68), 52 states have return successors, (80), 67 states have call predecessors, (80), 60 states have call successors, (80) [2022-04-07 00:46:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 729 transitions. [2022-04-07 00:46:02,752 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 729 transitions. Word has length 59 [2022-04-07 00:46:02,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:02,752 INFO L478 AbstractCegarLoop]: Abstraction has 590 states and 729 transitions. [2022-04-07 00:46:02,752 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:46:02,752 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 729 transitions. [2022-04-07 00:46:02,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-07 00:46:02,753 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:02,753 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:46:02,753 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-07 00:46:02,753 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:02,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1134993715, now seen corresponding path program 1 times [2022-04-07 00:46:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:02,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1641331912] [2022-04-07 00:46:02,755 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:02,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1134993715, now seen corresponding path program 2 times [2022-04-07 00:46:02,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:02,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561805536] [2022-04-07 00:46:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:02,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:02,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:02,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:02,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-07 00:46:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:02,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:02,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561805536] [2022-04-07 00:46:02,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561805536] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:02,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:02,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:46:02,981 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:02,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1641331912] [2022-04-07 00:46:02,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1641331912] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:02,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:02,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:46:02,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193852266] [2022-04-07 00:46:02,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:02,982 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:46:02,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:02,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:46:02,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:46:02,982 INFO L87 Difference]: Start difference. First operand 590 states and 729 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 6 states have internal predecessors, (46), 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) [2022-04-07 00:46:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:04,194 INFO L93 Difference]: Finished difference Result 631 states and 776 transitions. [2022-04-07 00:46:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:46:04,195 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 6 states have internal predecessors, (46), 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 58 [2022-04-07 00:46:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:04,197 INFO L225 Difference]: With dead ends: 631 [2022-04-07 00:46:04,206 INFO L226 Difference]: Without dead ends: 613 [2022-04-07 00:46:04,207 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:46:04,208 INFO L913 BasicCegarLoop]: 417 mSDtfsCounter, 626 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:04,208 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 1703 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:46:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-04-07 00:46:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 586. [2022-04-07 00:46:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 466 states have (on average 1.238197424892704) internal successors, (577), 475 states have internal predecessors, (577), 67 states have call successors, (67), 45 states have call predecessors, (67), 52 states have return successors, (79), 66 states have call predecessors, (79), 59 states have call successors, (79) [2022-04-07 00:46:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 723 transitions. [2022-04-07 00:46:04,383 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 723 transitions. Word has length 58 [2022-04-07 00:46:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:04,383 INFO L478 AbstractCegarLoop]: Abstraction has 586 states and 723 transitions. [2022-04-07 00:46:04,383 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 6 states have internal predecessors, (46), 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) [2022-04-07 00:46:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 723 transitions. [2022-04-07 00:46:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-07 00:46:04,384 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:04,384 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] [2022-04-07 00:46:04,385 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-07 00:46:04,385 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:04,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1265645689, now seen corresponding path program 1 times [2022-04-07 00:46:04,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:04,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [360118614] [2022-04-07 00:46:04,385 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1265645689, now seen corresponding path program 2 times [2022-04-07 00:46:04,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:04,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238192257] [2022-04-07 00:46:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:04,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:04,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:04,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:04,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:46:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-07 00:46:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:04,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:04,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238192257] [2022-04-07 00:46:04,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238192257] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:04,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:04,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:04,546 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:04,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [360118614] [2022-04-07 00:46:04,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [360118614] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:04,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:04,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:04,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060203489] [2022-04-07 00:46:04,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:04,546 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:46:04,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:04,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:46:04,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:46:04,547 INFO L87 Difference]: Start difference. First operand 586 states and 723 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:46:05,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:05,641 INFO L93 Difference]: Finished difference Result 644 states and 788 transitions. [2022-04-07 00:46:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:46:05,641 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-04-07 00:46:05,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:05,643 INFO L225 Difference]: With dead ends: 644 [2022-04-07 00:46:05,643 INFO L226 Difference]: Without dead ends: 620 [2022-04-07 00:46:05,643 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:46:05,644 INFO L913 BasicCegarLoop]: 394 mSDtfsCounter, 414 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:05,644 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 1003 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:46:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-04-07 00:46:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 581. [2022-04-07 00:46:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 463 states have (on average 1.2354211663066954) internal successors, (572), 471 states have internal predecessors, (572), 66 states have call successors, (66), 45 states have call predecessors, (66), 51 states have return successors, (77), 65 states have call predecessors, (77), 58 states have call successors, (77) [2022-04-07 00:46:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 715 transitions. [2022-04-07 00:46:05,750 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 715 transitions. Word has length 60 [2022-04-07 00:46:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:05,750 INFO L478 AbstractCegarLoop]: Abstraction has 581 states and 715 transitions. [2022-04-07 00:46:05,750 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:46:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 715 transitions. [2022-04-07 00:46:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-07 00:46:05,751 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:05,751 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] [2022-04-07 00:46:05,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-07 00:46:05,751 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:05,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:05,751 INFO L85 PathProgramCache]: Analyzing trace with hash -187427669, now seen corresponding path program 1 times [2022-04-07 00:46:05,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:05,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1949309812] [2022-04-07 00:46:05,752 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:05,752 INFO L85 PathProgramCache]: Analyzing trace with hash -187427669, now seen corresponding path program 2 times [2022-04-07 00:46:05,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:05,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132907696] [2022-04-07 00:46:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:05,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:05,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-07 00:46:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:46:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:05,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:46:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:05,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:05,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:05,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132907696] [2022-04-07 00:46:05,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132907696] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:05,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:05,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:05,960 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:05,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1949309812] [2022-04-07 00:46:05,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1949309812] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:05,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:05,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:05,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800088516] [2022-04-07 00:46:05,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:05,960 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:46:05,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:05,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:46:05,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:46:05,961 INFO L87 Difference]: Start difference. First operand 581 states and 715 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:46:07,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:07,186 INFO L93 Difference]: Finished difference Result 873 states and 1087 transitions. [2022-04-07 00:46:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:46:07,187 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-04-07 00:46:07,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:07,189 INFO L225 Difference]: With dead ends: 873 [2022-04-07 00:46:07,189 INFO L226 Difference]: Without dead ends: 614 [2022-04-07 00:46:07,190 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-04-07 00:46:07,190 INFO L913 BasicCegarLoop]: 380 mSDtfsCounter, 640 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:07,190 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 1127 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:46:07,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-04-07 00:46:07,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 581. [2022-04-07 00:46:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 463 states have (on average 1.2311015118790496) internal successors, (570), 471 states have internal predecessors, (570), 66 states have call successors, (66), 45 states have call predecessors, (66), 51 states have return successors, (77), 65 states have call predecessors, (77), 58 states have call successors, (77) [2022-04-07 00:46:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 713 transitions. [2022-04-07 00:46:07,302 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 713 transitions. Word has length 68 [2022-04-07 00:46:07,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:07,304 INFO L478 AbstractCegarLoop]: Abstraction has 581 states and 713 transitions. [2022-04-07 00:46:07,304 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:46:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 713 transitions. [2022-04-07 00:46:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-07 00:46:07,305 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:07,305 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] [2022-04-07 00:46:07,305 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-07 00:46:07,305 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:07,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1214846552, now seen corresponding path program 1 times [2022-04-07 00:46:07,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:07,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1161208632] [2022-04-07 00:46:07,305 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:07,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1214846552, now seen corresponding path program 2 times [2022-04-07 00:46:07,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:07,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158909957] [2022-04-07 00:46:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:07,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:46:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:46:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:46:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:07,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:07,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158909957] [2022-04-07 00:46:07,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158909957] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:07,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:07,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:07,466 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:07,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1161208632] [2022-04-07 00:46:07,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1161208632] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:07,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:07,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743210501] [2022-04-07 00:46:07,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:07,467 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:46:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:46:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:46:07,468 INFO L87 Difference]: Start difference. First operand 581 states and 713 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:46:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:08,728 INFO L93 Difference]: Finished difference Result 626 states and 763 transitions. [2022-04-07 00:46:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-07 00:46:08,728 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-04-07 00:46:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:08,730 INFO L225 Difference]: With dead ends: 626 [2022-04-07 00:46:08,730 INFO L226 Difference]: Without dead ends: 600 [2022-04-07 00:46:08,730 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-04-07 00:46:08,730 INFO L913 BasicCegarLoop]: 383 mSDtfsCounter, 647 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:08,731 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 1038 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:46:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-04-07 00:46:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 573. [2022-04-07 00:46:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 457 states have (on average 1.2341356673960613) internal successors, (564), 466 states have internal predecessors, (564), 65 states have call successors, (65), 45 states have call predecessors, (65), 50 states have return successors, (74), 62 states have call predecessors, (74), 57 states have call successors, (74) [2022-04-07 00:46:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 703 transitions. [2022-04-07 00:46:08,966 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 703 transitions. Word has length 63 [2022-04-07 00:46:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:08,966 INFO L478 AbstractCegarLoop]: Abstraction has 573 states and 703 transitions. [2022-04-07 00:46:08,966 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:46:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 703 transitions. [2022-04-07 00:46:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-07 00:46:08,967 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:08,967 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] [2022-04-07 00:46:08,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-07 00:46:08,967 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:08,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:08,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1866318114, now seen corresponding path program 1 times [2022-04-07 00:46:08,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:08,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [861004561] [2022-04-07 00:46:08,968 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:08,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1866318114, now seen corresponding path program 2 times [2022-04-07 00:46:08,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:08,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78322630] [2022-04-07 00:46:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:08,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:09,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:09,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:46:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:46:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:46:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:09,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:09,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78322630] [2022-04-07 00:46:09,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78322630] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:09,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:09,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:46:09,129 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:09,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [861004561] [2022-04-07 00:46:09,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [861004561] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:09,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:09,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-07 00:46:09,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420815969] [2022-04-07 00:46:09,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:09,131 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-07 00:46:09,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:09,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-07 00:46:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-07 00:46:09,131 INFO L87 Difference]: Start difference. First operand 573 states and 703 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:46:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:10,494 INFO L93 Difference]: Finished difference Result 695 states and 844 transitions. [2022-04-07 00:46:10,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 00:46:10,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 63 [2022-04-07 00:46:10,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:10,496 INFO L225 Difference]: With dead ends: 695 [2022-04-07 00:46:10,496 INFO L226 Difference]: Without dead ends: 603 [2022-04-07 00:46:10,497 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:46:10,501 INFO L913 BasicCegarLoop]: 382 mSDtfsCounter, 272 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:10,501 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 855 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-07 00:46:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-04-07 00:46:10,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 577. [2022-04-07 00:46:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 460 states have (on average 1.232608695652174) internal successors, (567), 469 states have internal predecessors, (567), 65 states have call successors, (65), 45 states have call predecessors, (65), 51 states have return successors, (75), 63 states have call predecessors, (75), 57 states have call successors, (75) [2022-04-07 00:46:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 707 transitions. [2022-04-07 00:46:10,634 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 707 transitions. Word has length 63 [2022-04-07 00:46:10,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:10,635 INFO L478 AbstractCegarLoop]: Abstraction has 577 states and 707 transitions. [2022-04-07 00:46:10,635 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:46:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 707 transitions. [2022-04-07 00:46:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-07 00:46:10,636 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:10,636 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] [2022-04-07 00:46:10,636 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-07 00:46:10,636 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:10,636 INFO L85 PathProgramCache]: Analyzing trace with hash -148851615, now seen corresponding path program 1 times [2022-04-07 00:46:10,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:10,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1743218493] [2022-04-07 00:46:10,636 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:10,636 INFO L85 PathProgramCache]: Analyzing trace with hash -148851615, now seen corresponding path program 2 times [2022-04-07 00:46:10,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:10,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367104899] [2022-04-07 00:46:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:10,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:10,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:46:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:46:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:46:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:10,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:10,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367104899] [2022-04-07 00:46:10,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367104899] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:10,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:10,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:10,853 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:10,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1743218493] [2022-04-07 00:46:10,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1743218493] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:10,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:10,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:10,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366515954] [2022-04-07 00:46:10,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:10,853 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:46:10,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:10,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:46:10,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:46:10,854 INFO L87 Difference]: Start difference. First operand 577 states and 707 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:46:12,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:12,247 INFO L93 Difference]: Finished difference Result 610 states and 745 transitions. [2022-04-07 00:46:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:46:12,247 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 63 [2022-04-07 00:46:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:12,249 INFO L225 Difference]: With dead ends: 610 [2022-04-07 00:46:12,249 INFO L226 Difference]: Without dead ends: 586 [2022-04-07 00:46:12,249 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-04-07 00:46:12,250 INFO L913 BasicCegarLoop]: 372 mSDtfsCounter, 633 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:12,250 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 1048 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-07 00:46:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-04-07 00:46:12,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 563. [2022-04-07 00:46:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 448 states have (on average 1.2276785714285714) internal successors, (550), 456 states have internal predecessors, (550), 64 states have call successors, (64), 45 states have call predecessors, (64), 50 states have return successors, (74), 62 states have call predecessors, (74), 57 states have call successors, (74) [2022-04-07 00:46:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 688 transitions. [2022-04-07 00:46:12,353 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 688 transitions. Word has length 63 [2022-04-07 00:46:12,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:12,353 INFO L478 AbstractCegarLoop]: Abstraction has 563 states and 688 transitions. [2022-04-07 00:46:12,353 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-07 00:46:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 688 transitions. [2022-04-07 00:46:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-07 00:46:12,355 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:12,355 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:46:12,355 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-07 00:46:12,355 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:12,355 INFO L85 PathProgramCache]: Analyzing trace with hash -2009973241, now seen corresponding path program 1 times [2022-04-07 00:46:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:12,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [970952635] [2022-04-07 00:46:12,356 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2009973241, now seen corresponding path program 2 times [2022-04-07 00:46:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:12,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095323042] [2022-04-07 00:46:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:12,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:12,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:12,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:46:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:12,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:46:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:12,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:12,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095323042] [2022-04-07 00:46:12,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095323042] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:12,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:12,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:46:12,557 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:12,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [970952635] [2022-04-07 00:46:12,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [970952635] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:12,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:12,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:46:12,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718545195] [2022-04-07 00:46:12,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:12,557 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:46:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:46:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:46:12,558 INFO L87 Difference]: Start difference. First operand 563 states and 688 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:46:14,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:14,067 INFO L93 Difference]: Finished difference Result 1351 states and 1624 transitions. [2022-04-07 00:46:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-07 00:46:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-04-07 00:46:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:14,070 INFO L225 Difference]: With dead ends: 1351 [2022-04-07 00:46:14,070 INFO L226 Difference]: Without dead ends: 848 [2022-04-07 00:46:14,071 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2022-04-07 00:46:14,071 INFO L913 BasicCegarLoop]: 422 mSDtfsCounter, 1259 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:14,071 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1272 Valid, 784 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-07 00:46:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-04-07 00:46:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 719. [2022-04-07 00:46:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 580 states have (on average 1.2086206896551723) internal successors, (701), 588 states have internal predecessors, (701), 74 states have call successors, (74), 56 states have call predecessors, (74), 64 states have return successors, (89), 75 states have call predecessors, (89), 67 states have call successors, (89) [2022-04-07 00:46:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 864 transitions. [2022-04-07 00:46:14,222 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 864 transitions. Word has length 64 [2022-04-07 00:46:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:14,222 INFO L478 AbstractCegarLoop]: Abstraction has 719 states and 864 transitions. [2022-04-07 00:46:14,222 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:46:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 864 transitions. [2022-04-07 00:46:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-07 00:46:14,232 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:14,232 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:46:14,232 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-07 00:46:14,232 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:14,233 INFO L85 PathProgramCache]: Analyzing trace with hash -15828535, now seen corresponding path program 1 times [2022-04-07 00:46:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:14,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1677319955] [2022-04-07 00:46:14,233 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:14,233 INFO L85 PathProgramCache]: Analyzing trace with hash -15828535, now seen corresponding path program 2 times [2022-04-07 00:46:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:14,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130237086] [2022-04-07 00:46:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:14,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:14,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:14,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:46:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:14,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:46:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:14,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:14,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130237086] [2022-04-07 00:46:14,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130237086] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:14,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:14,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:46:14,426 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:14,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1677319955] [2022-04-07 00:46:14,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1677319955] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:14,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:14,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:46:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788696194] [2022-04-07 00:46:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:14,426 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:46:14,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:46:14,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:46:14,428 INFO L87 Difference]: Start difference. First operand 719 states and 864 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:46:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:15,604 INFO L93 Difference]: Finished difference Result 786 states and 943 transitions. [2022-04-07 00:46:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:46:15,604 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-04-07 00:46:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:15,606 INFO L225 Difference]: With dead ends: 786 [2022-04-07 00:46:15,606 INFO L226 Difference]: Without dead ends: 754 [2022-04-07 00:46:15,607 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:46:15,607 INFO L913 BasicCegarLoop]: 376 mSDtfsCounter, 650 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:15,607 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 905 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:46:15,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-04-07 00:46:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 692. [2022-04-07 00:46:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 558 states have (on average 1.2114695340501793) internal successors, (676), 566 states have internal predecessors, (676), 72 states have call successors, (72), 54 states have call predecessors, (72), 61 states have return successors, (86), 72 states have call predecessors, (86), 65 states have call successors, (86) [2022-04-07 00:46:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 834 transitions. [2022-04-07 00:46:15,773 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 834 transitions. Word has length 64 [2022-04-07 00:46:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:15,775 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 834 transitions. [2022-04-07 00:46:15,775 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-07 00:46:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 834 transitions. [2022-04-07 00:46:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-07 00:46:15,776 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:15,776 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] [2022-04-07 00:46:15,776 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-04-07 00:46:15,777 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:15,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 289333813, now seen corresponding path program 1 times [2022-04-07 00:46:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:15,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [371405948] [2022-04-07 00:46:15,777 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 289333813, now seen corresponding path program 2 times [2022-04-07 00:46:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:15,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693782258] [2022-04-07 00:46:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:15,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:15,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:15,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693782258] [2022-04-07 00:46:15,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693782258] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:15,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:15,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:15,961 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:15,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [371405948] [2022-04-07 00:46:15,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [371405948] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:15,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:15,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:15,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532445490] [2022-04-07 00:46:15,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:15,962 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:46:15,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:15,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:46:15,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:46:15,963 INFO L87 Difference]: Start difference. First operand 692 states and 834 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-04-07 00:46:17,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:17,047 INFO L93 Difference]: Finished difference Result 766 states and 920 transitions. [2022-04-07 00:46:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:46:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 7 states have internal predecessors, (51), 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 63 [2022-04-07 00:46:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:17,049 INFO L225 Difference]: With dead ends: 766 [2022-04-07 00:46:17,049 INFO L226 Difference]: Without dead ends: 745 [2022-04-07 00:46:17,050 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:46:17,050 INFO L913 BasicCegarLoop]: 387 mSDtfsCounter, 610 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:17,050 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 1729 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:46:17,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-04-07 00:46:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 688. [2022-04-07 00:46:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 555 states have (on average 1.2108108108108109) internal successors, (672), 563 states have internal predecessors, (672), 71 states have call successors, (71), 54 states have call predecessors, (71), 61 states have return successors, (85), 71 states have call predecessors, (85), 64 states have call successors, (85) [2022-04-07 00:46:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 828 transitions. [2022-04-07 00:46:17,265 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 828 transitions. Word has length 63 [2022-04-07 00:46:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:17,265 INFO L478 AbstractCegarLoop]: Abstraction has 688 states and 828 transitions. [2022-04-07 00:46:17,265 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-04-07 00:46:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 828 transitions. [2022-04-07 00:46:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-07 00:46:17,266 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:17,266 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] [2022-04-07 00:46:17,266 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-04-07 00:46:17,266 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:17,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:17,267 INFO L85 PathProgramCache]: Analyzing trace with hash -423899630, now seen corresponding path program 1 times [2022-04-07 00:46:17,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:17,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1608115223] [2022-04-07 00:46:17,268 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash -423899630, now seen corresponding path program 2 times [2022-04-07 00:46:17,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:17,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109327763] [2022-04-07 00:46:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:17,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:17,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-07 00:46:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:17,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:46:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:46:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:17,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:17,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109327763] [2022-04-07 00:46:17,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109327763] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:17,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:17,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:17,473 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:17,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1608115223] [2022-04-07 00:46:17,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1608115223] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:17,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:17,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:17,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783841066] [2022-04-07 00:46:17,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:17,474 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:46:17,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:17,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:46:17,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:46:17,474 INFO L87 Difference]: Start difference. First operand 688 states and 828 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 00:46:18,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:18,701 INFO L93 Difference]: Finished difference Result 1014 states and 1230 transitions. [2022-04-07 00:46:18,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-07 00:46:18,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2022-04-07 00:46:18,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:18,703 INFO L225 Difference]: With dead ends: 1014 [2022-04-07 00:46:18,704 INFO L226 Difference]: Without dead ends: 788 [2022-04-07 00:46:18,704 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:46:18,711 INFO L913 BasicCegarLoop]: 387 mSDtfsCounter, 355 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:18,712 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 1380 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:46:18,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-04-07 00:46:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 688. [2022-04-07 00:46:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 555 states have (on average 1.2072072072072073) internal successors, (670), 563 states have internal predecessors, (670), 71 states have call successors, (71), 54 states have call predecessors, (71), 61 states have return successors, (85), 71 states have call predecessors, (85), 64 states have call successors, (85) [2022-04-07 00:46:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 826 transitions. [2022-04-07 00:46:18,865 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 826 transitions. Word has length 71 [2022-04-07 00:46:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:18,867 INFO L478 AbstractCegarLoop]: Abstraction has 688 states and 826 transitions. [2022-04-07 00:46:18,867 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-07 00:46:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 826 transitions. [2022-04-07 00:46:18,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-07 00:46:18,868 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:18,868 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:46:18,868 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-04-07 00:46:18,868 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:18,868 INFO L85 PathProgramCache]: Analyzing trace with hash 755059221, now seen corresponding path program 1 times [2022-04-07 00:46:18,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:18,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1656395703] [2022-04-07 00:46:18,883 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash 755059221, now seen corresponding path program 2 times [2022-04-07 00:46:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:18,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965466534] [2022-04-07 00:46:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:18,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:19,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:19,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:46:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-07 00:46:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:19,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:19,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965466534] [2022-04-07 00:46:19,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965466534] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:19,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:19,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:46:19,054 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:19,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1656395703] [2022-04-07 00:46:19,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1656395703] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:19,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:19,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-07 00:46:19,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395836795] [2022-04-07 00:46:19,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:19,054 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-07 00:46:19,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:19,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-07 00:46:19,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-07 00:46:19,055 INFO L87 Difference]: Start difference. First operand 688 states and 826 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 6 states have internal predecessors, (52), 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) [2022-04-07 00:46:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:20,242 INFO L93 Difference]: Finished difference Result 756 states and 906 transitions. [2022-04-07 00:46:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:46:20,242 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 6 states have internal predecessors, (52), 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 64 [2022-04-07 00:46:20,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:20,244 INFO L225 Difference]: With dead ends: 756 [2022-04-07 00:46:20,244 INFO L226 Difference]: Without dead ends: 734 [2022-04-07 00:46:20,244 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 [2022-04-07 00:46:20,244 INFO L913 BasicCegarLoop]: 383 mSDtfsCounter, 314 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:20,245 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 1537 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:46:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-04-07 00:46:20,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 644. [2022-04-07 00:46:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 517 states have (on average 1.206963249516441) internal successors, (624), 525 states have internal predecessors, (624), 68 states have call successors, (68), 52 states have call predecessors, (68), 58 states have return successors, (81), 67 states have call predecessors, (81), 61 states have call successors, (81) [2022-04-07 00:46:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 773 transitions. [2022-04-07 00:46:20,392 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 773 transitions. Word has length 64 [2022-04-07 00:46:20,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:20,394 INFO L478 AbstractCegarLoop]: Abstraction has 644 states and 773 transitions. [2022-04-07 00:46:20,394 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 6 states have internal predecessors, (52), 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) [2022-04-07 00:46:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 773 transitions. [2022-04-07 00:46:20,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-07 00:46:20,394 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:20,394 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:46:20,395 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-04-07 00:46:20,395 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:20,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash -774955897, now seen corresponding path program 1 times [2022-04-07 00:46:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:20,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2132361433] [2022-04-07 00:46:20,395 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash -774955897, now seen corresponding path program 2 times [2022-04-07 00:46:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:20,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779421330] [2022-04-07 00:46:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:20,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:20,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:20,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:20,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:20,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779421330] [2022-04-07 00:46:20,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779421330] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:20,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:20,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:20,615 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:20,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2132361433] [2022-04-07 00:46:20,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2132361433] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:20,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:20,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:20,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725075844] [2022-04-07 00:46:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:20,616 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:46:20,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:20,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:46:20,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:46:20,616 INFO L87 Difference]: Start difference. First operand 644 states and 773 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 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) [2022-04-07 00:46:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:21,706 INFO L93 Difference]: Finished difference Result 708 states and 847 transitions. [2022-04-07 00:46:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:46:21,706 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 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 64 [2022-04-07 00:46:21,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:21,728 INFO L225 Difference]: With dead ends: 708 [2022-04-07 00:46:21,728 INFO L226 Difference]: Without dead ends: 686 [2022-04-07 00:46:21,729 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:46:21,729 INFO L913 BasicCegarLoop]: 384 mSDtfsCounter, 350 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:21,729 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1771 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-07 00:46:21,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-04-07 00:46:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 639. [2022-04-07 00:46:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 513 states have (on average 1.206627680311891) internal successors, (619), 521 states have internal predecessors, (619), 67 states have call successors, (67), 52 states have call predecessors, (67), 58 states have return successors, (80), 66 states have call predecessors, (80), 60 states have call successors, (80) [2022-04-07 00:46:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 766 transitions. [2022-04-07 00:46:21,941 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 766 transitions. Word has length 64 [2022-04-07 00:46:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:21,941 INFO L478 AbstractCegarLoop]: Abstraction has 639 states and 766 transitions. [2022-04-07 00:46:21,941 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 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) [2022-04-07 00:46:21,941 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 766 transitions. [2022-04-07 00:46:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-07 00:46:21,942 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:21,942 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:46:21,942 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-04-07 00:46:21,947 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:21,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:21,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1705067367, now seen corresponding path program 1 times [2022-04-07 00:46:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:21,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [511162841] [2022-04-07 00:46:21,948 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:21,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1705067367, now seen corresponding path program 2 times [2022-04-07 00:46:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:21,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921360993] [2022-04-07 00:46:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:21,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:22,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:22,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:22,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:22,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:22,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921360993] [2022-04-07 00:46:22,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921360993] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:22,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:22,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:22,157 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:22,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [511162841] [2022-04-07 00:46:22,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [511162841] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:22,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:22,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:22,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827131204] [2022-04-07 00:46:22,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:22,158 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:46:22,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:46:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:46:22,158 INFO L87 Difference]: Start difference. First operand 639 states and 766 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 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) [2022-04-07 00:46:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:23,229 INFO L93 Difference]: Finished difference Result 703 states and 840 transitions. [2022-04-07 00:46:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:46:23,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 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 64 [2022-04-07 00:46:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:23,231 INFO L225 Difference]: With dead ends: 703 [2022-04-07 00:46:23,231 INFO L226 Difference]: Without dead ends: 682 [2022-04-07 00:46:23,232 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:46:23,232 INFO L913 BasicCegarLoop]: 365 mSDtfsCounter, 346 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:23,232 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1636 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:46:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-04-07 00:46:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 635. [2022-04-07 00:46:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 510 states have (on average 1.2058823529411764) internal successors, (615), 518 states have internal predecessors, (615), 66 states have call successors, (66), 52 states have call predecessors, (66), 58 states have return successors, (79), 65 states have call predecessors, (79), 59 states have call successors, (79) [2022-04-07 00:46:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 760 transitions. [2022-04-07 00:46:23,420 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 760 transitions. Word has length 64 [2022-04-07 00:46:23,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:23,421 INFO L478 AbstractCegarLoop]: Abstraction has 635 states and 760 transitions. [2022-04-07 00:46:23,421 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 7 states have internal predecessors, (52), 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) [2022-04-07 00:46:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 760 transitions. [2022-04-07 00:46:23,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-07 00:46:23,422 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:23,422 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] [2022-04-07 00:46:23,422 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-04-07 00:46:23,423 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:23,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:23,423 INFO L85 PathProgramCache]: Analyzing trace with hash -234049940, now seen corresponding path program 1 times [2022-04-07 00:46:23,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:23,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [807015803] [2022-04-07 00:46:23,423 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:23,423 INFO L85 PathProgramCache]: Analyzing trace with hash -234049940, now seen corresponding path program 2 times [2022-04-07 00:46:23,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:23,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135319325] [2022-04-07 00:46:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:23,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:23,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-07 00:46:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:46:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:46:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:23,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:23,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135319325] [2022-04-07 00:46:23,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135319325] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:23,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:23,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:46:23,652 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:23,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [807015803] [2022-04-07 00:46:23,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [807015803] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:23,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:23,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-07 00:46:23,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503646534] [2022-04-07 00:46:23,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:23,652 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-07 00:46:23,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-07 00:46:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-04-07 00:46:23,652 INFO L87 Difference]: Start difference. First operand 635 states and 760 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:46:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:24,470 INFO L93 Difference]: Finished difference Result 1079 states and 1309 transitions. [2022-04-07 00:46:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-07 00:46:24,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-04-07 00:46:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:24,478 INFO L225 Difference]: With dead ends: 1079 [2022-04-07 00:46:24,479 INFO L226 Difference]: Without dead ends: 826 [2022-04-07 00:46:24,481 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 [2022-04-07 00:46:24,481 INFO L913 BasicCegarLoop]: 424 mSDtfsCounter, 705 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:24,482 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 964 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:46:24,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-04-07 00:46:24,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 756. [2022-04-07 00:46:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 603 states have (on average 1.2023217247097844) internal successors, (725), 613 states have internal predecessors, (725), 79 states have call successors, (79), 62 states have call predecessors, (79), 73 states have return successors, (104), 81 states have call predecessors, (104), 73 states have call successors, (104) [2022-04-07 00:46:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 908 transitions. [2022-04-07 00:46:24,663 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 908 transitions. Word has length 73 [2022-04-07 00:46:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:24,663 INFO L478 AbstractCegarLoop]: Abstraction has 756 states and 908 transitions. [2022-04-07 00:46:24,663 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:46:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 908 transitions. [2022-04-07 00:46:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-07 00:46:24,664 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:24,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 00:46:24,664 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-04-07 00:46:24,664 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:24,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:24,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2048415176, now seen corresponding path program 1 times [2022-04-07 00:46:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:24,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2041103580] [2022-04-07 00:46:24,665 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:24,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2048415176, now seen corresponding path program 2 times [2022-04-07 00:46:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:24,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113563878] [2022-04-07 00:46:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:24,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-04-07 00:46:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:24,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:24,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113563878] [2022-04-07 00:46:24,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113563878] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:24,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:24,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:24,834 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:24,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2041103580] [2022-04-07 00:46:24,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2041103580] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:24,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:24,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:24,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271295765] [2022-04-07 00:46:24,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:24,834 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:46:24,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:46:24,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:46:24,835 INFO L87 Difference]: Start difference. First operand 756 states and 908 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2022-04-07 00:46:25,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:25,650 INFO L93 Difference]: Finished difference Result 820 states and 983 transitions. [2022-04-07 00:46:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-07 00:46:25,650 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 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 68 [2022-04-07 00:46:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:25,652 INFO L225 Difference]: With dead ends: 820 [2022-04-07 00:46:25,652 INFO L226 Difference]: Without dead ends: 777 [2022-04-07 00:46:25,652 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:46:25,653 INFO L913 BasicCegarLoop]: 357 mSDtfsCounter, 382 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:25,653 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1539 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:46:25,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-04-07 00:46:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 730. [2022-04-07 00:46:25,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 582 states have (on average 1.2010309278350515) internal successors, (699), 592 states have internal predecessors, (699), 76 states have call successors, (76), 60 states have call predecessors, (76), 71 states have return successors, (101), 78 states have call predecessors, (101), 70 states have call successors, (101) [2022-04-07 00:46:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 876 transitions. [2022-04-07 00:46:25,813 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 876 transitions. Word has length 68 [2022-04-07 00:46:25,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:25,813 INFO L478 AbstractCegarLoop]: Abstraction has 730 states and 876 transitions. [2022-04-07 00:46:25,813 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2022-04-07 00:46:25,814 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 876 transitions. [2022-04-07 00:46:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-07 00:46:25,814 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:25,814 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] [2022-04-07 00:46:25,814 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-04-07 00:46:25,814 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:25,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:25,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2136980157, now seen corresponding path program 1 times [2022-04-07 00:46:25,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:25,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [381548618] [2022-04-07 00:46:25,815 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:25,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2136980157, now seen corresponding path program 2 times [2022-04-07 00:46:25,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:25,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039780637] [2022-04-07 00:46:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:25,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:25,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:25,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:25,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-07 00:46:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-07 00:46:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-07 00:46:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-07 00:46:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:26,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:26,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039780637] [2022-04-07 00:46:26,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039780637] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:26,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:26,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 00:46:26,009 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:26,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [381548618] [2022-04-07 00:46:26,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [381548618] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:26,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:26,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-07 00:46:26,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731908119] [2022-04-07 00:46:26,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:26,009 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-07 00:46:26,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-07 00:46:26,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-04-07 00:46:26,010 INFO L87 Difference]: Start difference. First operand 730 states and 876 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (9), 8 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:46:27,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:27,458 INFO L93 Difference]: Finished difference Result 790 states and 947 transitions. [2022-04-07 00:46:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 00:46:27,458 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (9), 8 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-04-07 00:46:27,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:27,460 INFO L225 Difference]: With dead ends: 790 [2022-04-07 00:46:27,460 INFO L226 Difference]: Without dead ends: 732 [2022-04-07 00:46:27,461 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-04-07 00:46:27,463 INFO L913 BasicCegarLoop]: 323 mSDtfsCounter, 267 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 3011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:27,463 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 1027 Invalid, 3011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2940 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-07 00:46:27,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-04-07 00:46:27,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 682. [2022-04-07 00:46:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 542 states have (on average 1.1974169741697418) internal successors, (649), 552 states have internal predecessors, (649), 72 states have call successors, (72), 56 states have call predecessors, (72), 67 states have return successors, (95), 74 states have call predecessors, (95), 66 states have call successors, (95) [2022-04-07 00:46:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 816 transitions. [2022-04-07 00:46:27,633 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 816 transitions. Word has length 71 [2022-04-07 00:46:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:27,633 INFO L478 AbstractCegarLoop]: Abstraction has 682 states and 816 transitions. [2022-04-07 00:46:27,633 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (9), 8 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-07 00:46:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 816 transitions. [2022-04-07 00:46:27,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-04-07 00:46:27,634 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:27,634 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] [2022-04-07 00:46:27,634 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-04-07 00:46:27,635 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:27,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:27,636 INFO L85 PathProgramCache]: Analyzing trace with hash 79294232, now seen corresponding path program 1 times [2022-04-07 00:46:27,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:27,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1942499626] [2022-04-07 00:46:27,636 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:27,636 INFO L85 PathProgramCache]: Analyzing trace with hash 79294232, now seen corresponding path program 2 times [2022-04-07 00:46:27,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:27,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97758992] [2022-04-07 00:46:27,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:27,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:27,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-07 00:46:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:46:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:27,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:46:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:27,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-04-07 00:46:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:27,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:27,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97758992] [2022-04-07 00:46:27,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97758992] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:27,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:27,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:46:27,814 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:27,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1942499626] [2022-04-07 00:46:27,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1942499626] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:27,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:27,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-07 00:46:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685636029] [2022-04-07 00:46:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:27,814 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-07 00:46:27,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-07 00:46:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-04-07 00:46:27,815 INFO L87 Difference]: Start difference. First operand 682 states and 816 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 00:46:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:28,741 INFO L93 Difference]: Finished difference Result 1034 states and 1248 transitions. [2022-04-07 00:46:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-07 00:46:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2022-04-07 00:46:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:28,743 INFO L225 Difference]: With dead ends: 1034 [2022-04-07 00:46:28,743 INFO L226 Difference]: Without dead ends: 717 [2022-04-07 00:46:28,744 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-04-07 00:46:28,744 INFO L913 BasicCegarLoop]: 410 mSDtfsCounter, 469 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:28,744 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 1179 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-07 00:46:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-04-07 00:46:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 664. [2022-04-07 00:46:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 528 states have (on average 1.196969696969697) internal successors, (632), 537 states have internal predecessors, (632), 70 states have call successors, (70), 56 states have call predecessors, (70), 65 states have return successors, (84), 71 states have call predecessors, (84), 64 states have call successors, (84) [2022-04-07 00:46:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 786 transitions. [2022-04-07 00:46:28,908 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 786 transitions. Word has length 82 [2022-04-07 00:46:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:28,908 INFO L478 AbstractCegarLoop]: Abstraction has 664 states and 786 transitions. [2022-04-07 00:46:28,908 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-07 00:46:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 786 transitions. [2022-04-07 00:46:28,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-04-07 00:46:28,909 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:28,909 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] [2022-04-07 00:46:28,909 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-04-07 00:46:28,909 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash -46962823, now seen corresponding path program 1 times [2022-04-07 00:46:28,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:28,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [16772834] [2022-04-07 00:46:28,909 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash -46962823, now seen corresponding path program 2 times [2022-04-07 00:46:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:28,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65218584] [2022-04-07 00:46:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:29,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:29,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 00:46:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:46:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:29,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:46:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-04-07 00:46:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:29,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:46:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:29,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:29,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65218584] [2022-04-07 00:46:29,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65218584] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:29,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:29,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:29,121 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:29,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [16772834] [2022-04-07 00:46:29,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [16772834] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:29,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:29,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-07 00:46:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162296084] [2022-04-07 00:46:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:29,122 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-07 00:46:29,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-07 00:46:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-04-07 00:46:29,123 INFO L87 Difference]: Start difference. First operand 664 states and 786 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:46:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:30,140 INFO L93 Difference]: Finished difference Result 1069 states and 1308 transitions. [2022-04-07 00:46:30,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-07 00:46:30,141 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-04-07 00:46:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:30,143 INFO L225 Difference]: With dead ends: 1069 [2022-04-07 00:46:30,143 INFO L226 Difference]: Without dead ends: 815 [2022-04-07 00:46:30,160 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-04-07 00:46:30,160 INFO L913 BasicCegarLoop]: 356 mSDtfsCounter, 498 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:30,160 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1626 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-07 00:46:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-04-07 00:46:30,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 628. [2022-04-07 00:46:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 504 states have (on average 1.1964285714285714) internal successors, (603), 511 states have internal predecessors, (603), 63 states have call successors, (63), 50 states have call predecessors, (63), 60 states have return successors, (74), 67 states have call predecessors, (74), 58 states have call successors, (74) [2022-04-07 00:46:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 740 transitions. [2022-04-07 00:46:30,322 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 740 transitions. Word has length 83 [2022-04-07 00:46:30,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:30,323 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 740 transitions. [2022-04-07 00:46:30,323 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 10 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:46:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 740 transitions. [2022-04-07 00:46:30,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-04-07 00:46:30,324 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:30,324 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] [2022-04-07 00:46:30,324 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-04-07 00:46:30,324 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:30,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:30,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1453609377, now seen corresponding path program 1 times [2022-04-07 00:46:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:30,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [496860427] [2022-04-07 00:46:30,325 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:30,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1453609377, now seen corresponding path program 2 times [2022-04-07 00:46:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:30,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348348995] [2022-04-07 00:46:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:30,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:30,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:30,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:30,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:30,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:46:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:46:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:30,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-04-07 00:46:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:30,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:30,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348348995] [2022-04-07 00:46:30,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348348995] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:30,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:30,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 00:46:30,538 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:30,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [496860427] [2022-04-07 00:46:30,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [496860427] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:30,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:30,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 00:46:30,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972834427] [2022-04-07 00:46:30,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:30,539 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 00:46:30,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:30,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 00:46:30,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:46:30,539 INFO L87 Difference]: Start difference. First operand 628 states and 740 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:46:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:31,756 INFO L93 Difference]: Finished difference Result 738 states and 867 transitions. [2022-04-07 00:46:31,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-07 00:46:31,756 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2022-04-07 00:46:31,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:31,759 INFO L225 Difference]: With dead ends: 738 [2022-04-07 00:46:31,759 INFO L226 Difference]: Without dead ends: 717 [2022-04-07 00:46:31,759 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-04-07 00:46:31,776 INFO L913 BasicCegarLoop]: 305 mSDtfsCounter, 250 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:31,777 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 1713 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-07 00:46:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-04-07 00:46:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 636. [2022-04-07 00:46:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 511 states have (on average 1.1937377690802349) internal successors, (610), 518 states have internal predecessors, (610), 63 states have call successors, (63), 50 states have call predecessors, (63), 61 states have return successors, (77), 68 states have call predecessors, (77), 58 states have call successors, (77) [2022-04-07 00:46:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 750 transitions. [2022-04-07 00:46:31,928 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 750 transitions. Word has length 88 [2022-04-07 00:46:31,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:31,929 INFO L478 AbstractCegarLoop]: Abstraction has 636 states and 750 transitions. [2022-04-07 00:46:31,929 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:46:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 750 transitions. [2022-04-07 00:46:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-04-07 00:46:31,931 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:31,931 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] [2022-04-07 00:46:31,931 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-04-07 00:46:31,931 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:31,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1714590573, now seen corresponding path program 1 times [2022-04-07 00:46:31,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:31,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [187438105] [2022-04-07 00:46:31,931 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1714590573, now seen corresponding path program 2 times [2022-04-07 00:46:31,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:31,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216747946] [2022-04-07 00:46:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:31,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:32,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-07 00:46:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:32,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-07 00:46:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-07 00:46:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-07 00:46:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:32,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:32,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216747946] [2022-04-07 00:46:32,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216747946] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:32,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:32,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 00:46:32,124 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:32,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [187438105] [2022-04-07 00:46:32,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [187438105] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:32,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:32,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-07 00:46:32,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255517735] [2022-04-07 00:46:32,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:32,125 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-07 00:46:32,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:32,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-07 00:46:32,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-04-07 00:46:32,126 INFO L87 Difference]: Start difference. First operand 636 states and 750 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:46:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:33,150 INFO L93 Difference]: Finished difference Result 738 states and 866 transitions. [2022-04-07 00:46:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-07 00:46:33,151 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2022-04-07 00:46:33,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:33,152 INFO L225 Difference]: With dead ends: 738 [2022-04-07 00:46:33,153 INFO L226 Difference]: Without dead ends: 717 [2022-04-07 00:46:33,153 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-04-07 00:46:33,153 INFO L913 BasicCegarLoop]: 321 mSDtfsCounter, 407 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:33,154 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 1813 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:46:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-04-07 00:46:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 628. [2022-04-07 00:46:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 504 states have (on average 1.1944444444444444) internal successors, (602), 511 states have internal predecessors, (602), 63 states have call successors, (63), 50 states have call predecessors, (63), 60 states have return successors, (74), 67 states have call predecessors, (74), 58 states have call successors, (74) [2022-04-07 00:46:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 739 transitions. [2022-04-07 00:46:33,353 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 739 transitions. Word has length 89 [2022-04-07 00:46:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:33,367 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 739 transitions. [2022-04-07 00:46:33,367 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (11), 9 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-07 00:46:33,367 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 739 transitions. [2022-04-07 00:46:33,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-04-07 00:46:33,368 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:33,368 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] [2022-04-07 00:46:33,369 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-04-07 00:46:33,369 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:33,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash -559319967, now seen corresponding path program 1 times [2022-04-07 00:46:33,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:33,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1396707706] [2022-04-07 00:46:33,369 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash -559319967, now seen corresponding path program 2 times [2022-04-07 00:46:33,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:33,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629114545] [2022-04-07 00:46:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:33,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 00:46:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:33,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-07 00:46:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-07 00:46:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-04-07 00:46:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:33,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-07 00:46:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:33,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-07 00:46:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:33,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-07 00:46:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 00:46:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 00:46:33,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 00:46:33,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629114545] [2022-04-07 00:46:33,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629114545] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:33,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:33,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:33,554 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-07 00:46:33,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1396707706] [2022-04-07 00:46:33,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1396707706] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 00:46:33,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 00:46:33,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-07 00:46:33,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776839255] [2022-04-07 00:46:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 00:46:33,555 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-07 00:46:33,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-07 00:46:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-04-07 00:46:33,556 INFO L87 Difference]: Start difference. First operand 628 states and 739 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 5 states have internal predecessors, (68), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-07 00:46:34,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 00:46:34,649 INFO L93 Difference]: Finished difference Result 1175 states and 1370 transitions. [2022-04-07 00:46:34,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-07 00:46:34,650 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 5 states have internal predecessors, (68), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 84 [2022-04-07 00:46:34,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 00:46:34,652 INFO L225 Difference]: With dead ends: 1175 [2022-04-07 00:46:34,652 INFO L226 Difference]: Without dead ends: 775 [2022-04-07 00:46:34,653 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-04-07 00:46:34,653 INFO L913 BasicCegarLoop]: 335 mSDtfsCounter, 748 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-07 00:46:34,653 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 587 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-07 00:46:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-04-07 00:46:34,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 749. [2022-04-07 00:46:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 601 states have (on average 1.1863560732113145) internal successors, (713), 610 states have internal predecessors, (713), 71 states have call successors, (71), 62 states have call predecessors, (71), 76 states have return successors, (86), 77 states have call predecessors, (86), 66 states have call successors, (86) [2022-04-07 00:46:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 870 transitions. [2022-04-07 00:46:34,856 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 870 transitions. Word has length 84 [2022-04-07 00:46:34,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 00:46:34,856 INFO L478 AbstractCegarLoop]: Abstraction has 749 states and 870 transitions. [2022-04-07 00:46:34,857 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 5 states have internal predecessors, (68), 5 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-07 00:46:34,857 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 870 transitions. [2022-04-07 00:46:34,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-07 00:46:34,857 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 00:46:34,857 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] [2022-04-07 00:46:34,858 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-04-07 00:46:34,858 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 00:46:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 00:46:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash -401569601, now seen corresponding path program 1 times [2022-04-07 00:46:34,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-07 00:46:34,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [657051583] [2022-04-07 00:46:34,858 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-07 00:46:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash -401569601, now seen corresponding path program 2 times [2022-04-07 00:46:34,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 00:46:34,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111260081] [2022-04-07 00:46:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 00:46:34,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 00:46:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-07 00:46:34,876 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-07 00:46:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-07 00:46:34,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-07 00:46:34,999 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-07 00:46:34,999 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-07 00:46:35,003 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-07 00:46:35,020 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-04-07 00:46:35,022 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-04-07 00:46:35,024 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-07 00:46:35,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 12:46:35 BoogieIcfgContainer [2022-04-07 00:46:35,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-07 00:46:35,055 INFO L158 Benchmark]: Toolchain (without parser) took 83415.91ms. Allocated memory was 154.1MB in the beginning and 846.2MB in the end (delta: 692.1MB). Free memory was 101.6MB in the beginning and 753.4MB in the end (delta: -651.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-04-07 00:46:35,055 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 154.1MB. Free memory was 119.6MB in the beginning and 119.6MB in the end (delta: 73.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-07 00:46:35,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.04ms. Allocated memory was 154.1MB in the beginning and 191.9MB in the end (delta: 37.7MB). Free memory was 101.4MB in the beginning and 154.8MB in the end (delta: -53.4MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2022-04-07 00:46:35,055 INFO L158 Benchmark]: Boogie Preprocessor took 91.98ms. Allocated memory is still 191.9MB. Free memory was 154.8MB in the beginning and 150.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-04-07 00:46:35,055 INFO L158 Benchmark]: RCFGBuilder took 897.98ms. Allocated memory is still 191.9MB. Free memory was 150.6MB in the beginning and 163.7MB in the end (delta: -13.1MB). Peak memory consumption was 59.1MB. Max. memory is 8.0GB. [2022-04-07 00:46:35,063 INFO L158 Benchmark]: TraceAbstraction took 81917.56ms. Allocated memory was 191.9MB in the beginning and 846.2MB in the end (delta: 654.3MB). Free memory was 163.2MB in the beginning and 753.4MB in the end (delta: -590.2MB). Peak memory consumption was 64.6MB. Max. memory is 8.0GB. [2022-04-07 00:46:35,064 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 154.1MB. Free memory was 119.6MB in the beginning and 119.6MB in the end (delta: 73.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 505.04ms. Allocated memory was 154.1MB in the beginning and 191.9MB in the end (delta: 37.7MB). Free memory was 101.4MB in the beginning and 154.8MB in the end (delta: -53.4MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 91.98ms. Allocated memory is still 191.9MB. Free memory was 154.8MB in the beginning and 150.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 897.98ms. Allocated memory is still 191.9MB. Free memory was 150.6MB in the beginning and 163.7MB in the end (delta: -13.1MB). Peak memory consumption was 59.1MB. Max. memory is 8.0GB. * TraceAbstraction took 81917.56ms. Allocated memory was 191.9MB in the beginning and 846.2MB in the end (delta: 654.3MB). Free memory was 163.2MB in the beginning and 753.4MB in the end (delta: -590.2MB). Peak memory consumption was 64.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1627]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int FloppyThread ; [L43] int KernelMode ; [L44] int Suspended ; [L45] int Executive ; [L46] int DiskController ; [L47] int FloppyDiskPeripheral ; [L48] int FlConfigCallBack ; [L49] int MaximumInterfaceType ; [L50] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L51] int myStatus ; [L52] int s ; [L53] int UNLOADED ; [L54] int NP ; [L55] int DC ; [L56] int SKIP1 ; [L57] int SKIP2 ; [L58] int MPR1 ; [L59] int MPR3 ; [L60] int IPC ; [L61] int pended ; [L62] int compRegistered ; [L63] int lowerDriverReturn ; [L64] int setEventCalled ; [L65] int customIrp ; [L88] int PagingReferenceCount = 0; [L89] int PagingMutex = 0; [L668] int status ; [L669] int irp = __VERIFIER_nondet_int() ; [L670] int pirp ; [L671] int pirp__IoStatus__Status ; [L672] int irp_choice = __VERIFIER_nondet_int() ; [L673] int devobj = __VERIFIER_nondet_int() ; [L674] int __cil_tmp8 ; [L676] FloppyThread = 0 [L677] KernelMode = 0 [L678] Suspended = 0 [L679] Executive = 0 [L680] DiskController = 0 [L681] FloppyDiskPeripheral = 0 [L682] FlConfigCallBack = 0 [L683] MaximumInterfaceType = 0 [L684] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L685] myStatus = 0 [L686] s = 0 [L687] UNLOADED = 0 [L688] NP = 0 [L689] DC = 0 [L690] SKIP1 = 0 [L691] SKIP2 = 0 [L692] MPR1 = 0 [L693] MPR3 = 0 [L694] IPC = 0 [L695] pended = 0 [L696] compRegistered = 0 [L697] lowerDriverReturn = 0 [L698] setEventCalled = 0 [L699] customIrp = 0 [L703] status = 0 [L704] pirp = irp [L705] CALL _BLAST_init() [L71] UNLOADED = 0 [L72] NP = 1 [L73] DC = 2 [L74] SKIP1 = 3 [L75] SKIP2 = 4 [L76] MPR1 = 5 [L77] MPR3 = 6 [L78] IPC = 7 [L79] s = UNLOADED [L80] pended = 0 [L81] compRegistered = 0 [L82] lowerDriverReturn = 0 [L83] setEventCalled = 0 [L84] customIrp = 0 [L705] RET _BLAST_init() [L707] COND TRUE status >= 0 [L708] s = NP [L709] customIrp = 0 [L710] setEventCalled = customIrp [L711] lowerDriverReturn = setEventCalled [L712] compRegistered = lowerDriverReturn [L713] pended = compRegistered [L714] pirp__IoStatus__Status = 0 [L715] myStatus = 0 [L716] COND TRUE irp_choice == 0 [L717] pirp__IoStatus__Status = -1073741637 [L718] myStatus = -1073741637 [L721] CALL stub_driver_init() [L658] s = NP [L659] pended = 0 [L660] compRegistered = 0 [L661] lowerDriverReturn = 0 [L662] setEventCalled = 0 [L663] customIrp = 0 [L721] RET stub_driver_init() [L724] COND FALSE !(status < 0) [L728] int tmp_ndt_1; [L729] tmp_ndt_1 = __VERIFIER_nondet_int() [L730] COND FALSE !(tmp_ndt_1 == 0) [L733] int tmp_ndt_2; [L734] tmp_ndt_2 = __VERIFIER_nondet_int() [L735] COND FALSE !(tmp_ndt_2 == 1) [L738] int tmp_ndt_3; [L739] tmp_ndt_3 = __VERIFIER_nondet_int() [L740] COND FALSE !(tmp_ndt_3 == 2) [L743] int tmp_ndt_4; [L744] tmp_ndt_4 = __VERIFIER_nondet_int() [L745] COND TRUE tmp_ndt_4 == 3 [L767] CALL, EXPR FloppyPnp(devobj, pirp) [L161] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L162] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L163] int Irp__IoStatus__Information ; [L164] int Irp__IoStatus__Status ; [L165] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L166] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L167] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L168] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L169] int disketteExtension__HoldNewRequests ; [L170] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L171] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L172] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L173] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L174] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L175] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L176] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L177] int irpSp ; [L178] int disketteExtension ; [L179] int ntStatus ; [L180] int doneEvent = __VERIFIER_nondet_int() ; [L181] int irpSp___0 ; [L182] int nextIrpSp ; [L183] int nextIrpSp__Control ; [L184] int irpSp___1 ; [L185] int irpSp__Context ; [L186] int irpSp__Control ; [L187] long __cil_tmp29 ; [L188] long __cil_tmp30 ; [L191] ntStatus = 0 [L192] PagingReferenceCount ++ [L193] COND TRUE PagingReferenceCount == 1 [L196] disketteExtension = DeviceObject__DeviceExtension [L197] irpSp = Irp__Tail__Overlay__CurrentStackLocation [L198] COND FALSE !(\read(disketteExtension__IsRemoved)) [L207] COND FALSE !(irpSp__MinorFunction == 0) [L210] COND TRUE irpSp__MinorFunction == 5 [L236] COND TRUE irpSp__MinorFunction == 5 [L239] COND FALSE !(! disketteExtension__IsStarted) [L255] disketteExtension__HoldNewRequests = 1 [L256] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L98] int status ; [L99] int threadHandle = __VERIFIER_nondet_int() ; [L100] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L101] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L102] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L103] int Irp__IoStatus__Status ; [L104] int Irp__IoStatus__Information ; [L105] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L106] int ObjAttributes = __VERIFIER_nondet_int() ; [L107] int __cil_tmp12 ; [L108] int __cil_tmp13 ; [L111] COND FALSE !(DisketteExtension__PoweringDown == 1) [L117] DisketteExtension__ThreadReferenceCount ++ [L118] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) [L150] COND TRUE pended == 0 [L151] pended = 1 [L157] return (259); [L256] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L256] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L259] __cil_tmp29 = (long )ntStatus [L260] COND TRUE __cil_tmp29 == 259L [L262-L263] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L1066] COND FALSE !(s == MPR3) [L1075] COND FALSE !(customIrp == 1) [L1079] COND FALSE !(s == MPR3) [L1086] int tmp_ndt_12; [L1087] tmp_ndt_12 = __VERIFIER_nondet_int() [L1088] COND TRUE tmp_ndt_12 == 0 [L1094] return (0); [L262-L263] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L265] COND TRUE disketteExtension__FloppyThread != 0 [L268] disketteExtension__FloppyThread = 0 [L269] Irp__IoStatus__Status = 0 [L270] myStatus = 0 [L271] COND TRUE s == NP [L272] s = SKIP1 [L279] Irp__CurrentLocation ++ [L280] Irp__Tail__Overlay__CurrentStackLocation ++ [L281] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L968] int returnVal2 ; [L969] int compRetStatus1 ; [L970] int lcontext = __VERIFIER_nondet_int() ; [L971] unsigned long __cil_tmp7 ; [L974] COND FALSE !(\read(compRegistered)) [L987] int tmp_ndt_10; [L988] tmp_ndt_10 = __VERIFIER_nondet_int() [L989] COND TRUE tmp_ndt_10 == 0 [L1000] returnVal2 = 0 [L1013] COND FALSE !(s == NP) [L1017] COND FALSE !(s == MPR1) [L1026] COND TRUE s == SKIP1 [L1027] s = SKIP2 [L1028] lowerDriverReturn = returnVal2 [L1036] return (returnVal2); [L281] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L281] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L427] PagingReferenceCount -- [L428] COND TRUE PagingReferenceCount == 0 [L431] return (ntStatus); [L767] RET, EXPR FloppyPnp(devobj, pirp) [L767] status = FloppyPnp(devobj, pirp) [L780] COND TRUE pended == 1 [L781] COND FALSE !(s == NP) [L788] COND TRUE pended == 1 [L789] COND FALSE !(s == MPR3) [L796] COND TRUE s != UNLOADED [L797] COND TRUE status != -1 [L798] COND FALSE !(s != SKIP2) [L812] COND TRUE pended == 1 [L813] COND TRUE status != 259 [L814] CALL errorFn() [L1627] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 31 procedures, 396 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 81.8s, OverallIterations: 55, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 65.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36068 SdHoareTripleChecker+Valid, 49.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35589 mSDsluCounter, 63157 SdHoareTripleChecker+Invalid, 41.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39753 mSDsCounter, 10950 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85659 IncrementalHoareTripleChecker+Invalid, 96609 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10950 mSolverCounterUnsat, 23404 mSDtfsCounter, 85659 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1216 GetRequests, 491 SyntacticMatches, 7 SemanticMatches, 718 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=19, InterpolantAutomatonStates: 639, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 54 MinimizatonAttempts, 3264 StatesRemovedByMinimization, 54 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-07 00:46:35,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...